Merge commit 'v2.6.32-rc3'

122 files changed, 4581 insertions, 4782 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 430d5b24af7..d8e5d0cdd67 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -31,8 +31,8 @@ GCOV_PROFILE_paravirt.o		:= n
 
 obj-y			:= process_$(BITS).o signal.o entry_$(BITS).o
 obj-y			+= traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
-obj-y			+= time_$(BITS).o ioport.o ldt.o dumpstack.o
-obj-y			+= setup.o i8259.o irqinit.o
+obj-y			+= time.o ioport.o ldt.o dumpstack.o
+obj-y			+= setup.o x86_init.o i8259.o irqinit.o
 obj-$(CONFIG_X86_VISWS)	+= visws_quirks.o
 obj-$(CONFIG_X86_32)	+= probe_roms_32.o
 obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
@@ -52,9 +52,11 @@ obj-$(CONFIG_X86_DS_SELFTEST)		+= ds_selftest.o
 obj-$(CONFIG_X86_32)		+= tls.o
 obj-$(CONFIG_IA32_EMULATION)	+= tls.o
 obj-y				+= step.o
+obj-$(CONFIG_INTEL_TXT)		+= tboot.o
 obj-$(CONFIG_STACKTRACE)	+= stacktrace.o
 obj-y				+= cpu/
 obj-y				+= acpi/
+obj-$(CONFIG_SFI)		+= sfi.o
 obj-y				+= reboot.o
 obj-$(CONFIG_MCA)		+= mca_32.o
 obj-$(CONFIG_X86_MSR)		+= msr.o
@@ -104,6 +106,7 @@ obj-$(CONFIG_SCx200)		+= scx200.o
 scx200-y			+= scx200_32.o
 
 obj-$(CONFIG_OLPC)		+= olpc.o
+obj-$(CONFIG_X86_MRST)		+= mrst.o
 
 microcode-y				:= microcode_core.o
 microcode-$(CONFIG_MICROCODE_INTEL)	+= microcode_intel.o
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 6b8ca3a0285..67e929b8987 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -833,106 +833,6 @@ static int __init acpi_parse_madt_lapic_entries(void)
 extern int es7000_plat;
 #endif
 
-static struct {
-	int gsi_base;
-	int gsi_end;
-} mp_ioapic_routing[MAX_IO_APICS];
-
-int mp_find_ioapic(int gsi)
-{
-	int i = 0;
-
-	/* Find the IOAPIC that manages this GSI. */
-	for (i = 0; i < nr_ioapics; i++) {
-		if ((gsi >= mp_ioapic_routing[i].gsi_base)
-		    && (gsi <= mp_ioapic_routing[i].gsi_end))
-			return i;
-	}
-
-	printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
-	return -1;
-}
-
-int mp_find_ioapic_pin(int ioapic, int gsi)
-{
-	if (WARN_ON(ioapic == -1))
-		return -1;
-	if (WARN_ON(gsi > mp_ioapic_routing[ioapic].gsi_end))
-		return -1;
-
-	return gsi - mp_ioapic_routing[ioapic].gsi_base;
-}
-
-static u8 __init uniq_ioapic_id(u8 id)
-{
-#ifdef CONFIG_X86_32
-	if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
-	    !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
-		return io_apic_get_unique_id(nr_ioapics, id);
-	else
-		return id;
-#else
-	int i;
-	DECLARE_BITMAP(used, 256);
-	bitmap_zero(used, 256);
-	for (i = 0; i < nr_ioapics; i++) {
-		struct mpc_ioapic *ia = &mp_ioapics[i];
-		__set_bit(ia->apicid, used);
-	}
-	if (!test_bit(id, used))
-		return id;
-	return find_first_zero_bit(used, 256);
-#endif
-}
-
-static int bad_ioapic(unsigned long address)
-{
-	if (nr_ioapics >= MAX_IO_APICS) {
-		printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded "
-		       "(found %d)\n", MAX_IO_APICS, nr_ioapics);
-		panic("Recompile kernel with bigger MAX_IO_APICS!\n");
-	}
-	if (!address) {
-		printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address"
-		       " found in table, skipping!\n");
-		return 1;
-	}
-	return 0;
-}
-
-void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
-{
-	int idx = 0;
-
-	if (bad_ioapic(address))
-		return;
-
-	idx = nr_ioapics;
-
-	mp_ioapics[idx].type = MP_IOAPIC;
-	mp_ioapics[idx].flags = MPC_APIC_USABLE;
-	mp_ioapics[idx].apicaddr = address;
-
-	set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
-	mp_ioapics[idx].apicid = uniq_ioapic_id(id);
-	mp_ioapics[idx].apicver = io_apic_get_version(idx);
-
-	/*
-	 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
-	 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
-	 */
-	mp_ioapic_routing[idx].gsi_base = gsi_base;
-	mp_ioapic_routing[idx].gsi_end = gsi_base +
-	    io_apic_get_redir_entries(idx);
-
-	printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
-	       "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
-	       mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
-	       mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end);
-
-	nr_ioapics++;
-}
-
 int __init acpi_probe_gsi(void)
 {
 	int idx;
@@ -947,7 +847,7 @@ int __init acpi_probe_gsi(void)
 
 	max_gsi = 0;
 	for (idx = 0; idx < nr_ioapics; idx++) {
-		gsi = mp_ioapic_routing[idx].gsi_end;
+		gsi = mp_gsi_routing[idx].gsi_end;
 
 		if (gsi > max_gsi)
 			max_gsi = gsi;
@@ -1179,9 +1079,8 @@ static int __init acpi_parse_madt_ioapic_entries(void)
 	 * If MPS is present, it will handle them,
 	 * otherwise the system will stay in PIC mode
 	 */
-	if (acpi_disabled || acpi_noirq) {
+	if (acpi_disabled || acpi_noirq)
 		return -ENODEV;
-	}
 
 	if (!cpu_has_apic)
 		return -ENODEV;
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index 8c44c232efc..59cdfa4686b 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -48,7 +48,7 @@ void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
 	 * P4, Core and beyond CPUs
 	 */
 	if (c->x86_vendor == X86_VENDOR_INTEL &&
-	    (c->x86 > 0x6 || (c->x86 == 6 && c->x86_model >= 14)))
+	    (c->x86 > 0xf || (c->x86 == 6 && c->x86_model >= 14)))
 			flags->bm_control = 0;
 }
 EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index f5765870257..de7353c0ce9 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -2,6 +2,7 @@
 #include <linux/sched.h>
 #include <linux/mutex.h>
 #include <linux/list.h>
+#include <linux/stringify.h>
 #include <linux/kprobes.h>
 #include <linux/mm.h>
 #include <linux/vmalloc.h>
@@ -32,7 +33,7 @@ __setup("smp-alt-boot", bootonly);
 #define smp_alt_once 1
 #endif
 
-static int debug_alternative;
+static int __initdata_or_module debug_alternative;
 
 static int __init debug_alt(char *str)
 {
@@ -51,7 +52,7 @@ static int __init setup_noreplace_smp(char *str)
 __setup("noreplace-smp", setup_noreplace_smp);
 
 #ifdef CONFIG_PARAVIRT
-static int noreplace_paravirt = 0;
+static int __initdata_or_module noreplace_paravirt = 0;
 
 static int __init setup_noreplace_paravirt(char *str)
 {
@@ -64,16 +65,17 @@ __setup("noreplace-paravirt", setup_noreplace_paravirt);
 #define DPRINTK(fmt, args...) if (debug_alternative) \
 	printk(KERN_DEBUG fmt, args)
 
-#ifdef GENERIC_NOP1
+#if defined(GENERIC_NOP1) && !defined(CONFIG_X86_64)
 /* Use inline assembly to define this because the nops are defined
    as inline assembly strings in the include files and we cannot
    get them easily into strings. */
-asm("\t.section .rodata, \"a\"\nintelnops: "
+asm("\t" __stringify(__INITRODATA_OR_MODULE) "\nintelnops: "
 	GENERIC_NOP1 GENERIC_NOP2 GENERIC_NOP3 GENERIC_NOP4 GENERIC_NOP5 GENERIC_NOP6
 	GENERIC_NOP7 GENERIC_NOP8
     "\t.previous");
 extern const unsigned char intelnops[];
-static const unsigned char *const intel_nops[ASM_NOP_MAX+1] = {
+static const unsigned char *const __initconst_or_module
+intel_nops[ASM_NOP_MAX+1] = {
 	NULL,
 	intelnops,
 	intelnops + 1,
@@ -87,12 +89,13 @@ static const unsigned char *const intel_nops[ASM_NOP_MAX+1] = {
 #endif
 
 #ifdef K8_NOP1
-asm("\t.section .rodata, \"a\"\nk8nops: "
+asm("\t" __stringify(__INITRODATA_OR_MODULE) "\nk8nops: "
 	K8_NOP1 K8_NOP2 K8_NOP3 K8_NOP4 K8_NOP5 K8_NOP6
 	K8_NOP7 K8_NOP8
     "\t.previous");
 extern const unsigned char k8nops[];
-static const unsigned char *const k8_nops[ASM_NOP_MAX+1] = {
+static const unsigned char *const __initconst_or_module
+k8_nops[ASM_NOP_MAX+1] = {
 	NULL,
 	k8nops,
 	k8nops + 1,
@@ -105,13 +108,14 @@ static const unsigned char *const k8_nops[ASM_NOP_MAX+1] = {
 };
 #endif
 
-#ifdef K7_NOP1
-asm("\t.section .rodata, \"a\"\nk7nops: "
+#if defined(K7_NOP1) && !defined(CONFIG_X86_64)
+asm("\t" __stringify(__INITRODATA_OR_MODULE) "\nk7nops: "
 	K7_NOP1 K7_NOP2 K7_NOP3 K7_NOP4 K7_NOP5 K7_NOP6
 	K7_NOP7 K7_NOP8
     "\t.previous");
 extern const unsigned char k7nops[];
-static const unsigned char *const k7_nops[ASM_NOP_MAX+1] = {
+static const unsigned char *const __initconst_or_module
+k7_nops[ASM_NOP_MAX+1] = {
 	NULL,
 	k7nops,
 	k7nops + 1,
@@ -125,12 +129,13 @@ static const unsigned char *const k7_nops[ASM_NOP_MAX+1] = {
 #endif
 
 #ifdef P6_NOP1
-asm("\t.section .rodata, \"a\"\np6nops: "
+asm("\t" __stringify(__INITRODATA_OR_MODULE) "\np6nops: "
 	P6_NOP1 P6_NOP2 P6_NOP3 P6_NOP4 P6_NOP5 P6_NOP6
 	P6_NOP7 P6_NOP8
     "\t.previous");
 extern const unsigned char p6nops[];
-static const unsigned char *const p6_nops[ASM_NOP_MAX+1] = {
+static const unsigned char *const __initconst_or_module
+p6_nops[ASM_NOP_MAX+1] = {
 	NULL,
 	p6nops,
 	p6nops + 1,
@@ -146,7 +151,7 @@ static const unsigned char *const p6_nops[ASM_NOP_MAX+1] = {
 #ifdef CONFIG_X86_64
 
 extern char __vsyscall_0;
-const unsigned char *const *find_nop_table(void)
+static const unsigned char *const *__init_or_module find_nop_table(void)
 {
 	if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
 	    boot_cpu_has(X86_FEATURE_NOPL))
@@ -157,7 +162,7 @@ const unsigned char *const *find_nop_table(void)
 
 #else /* CONFIG_X86_64 */
 
-const unsigned char *const *find_nop_table(void)
+static const unsigned char *const *__init_or_module find_nop_table(void)
 {
 	if (boot_cpu_has(X86_FEATURE_K8))
 		return k8_nops;
@@ -172,7 +177,7 @@ const unsigned char *const *find_nop_table(void)
 #endif /* CONFIG_X86_64 */
 
 /* Use this to add nops to a buffer, then text_poke the whole buffer. */
-void add_nops(void *insns, unsigned int len)
+static void __init_or_module add_nops(void *insns, unsigned int len)
 {
 	const unsigned char *const *noptable = find_nop_table();
 
@@ -185,10 +190,10 @@ void add_nops(void *insns, unsigned int len)
 		len -= noplen;
 	}
 }
-EXPORT_SYMBOL_GPL(add_nops);
 
 extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
 extern u8 *__smp_locks[], *__smp_locks_end[];
+static void *text_poke_early(void *addr, const void *opcode, size_t len);
 
 /* Replace instructions with better alternatives for this CPU type.
    This runs before SMP is initialized to avoid SMP problems with
@@ -196,7 +201,8 @@ extern u8 *__smp_locks[], *__smp_locks_end[];
    APs have less capabilities than the boot processor are not handled.
    Tough. Make sure you disable such features by hand. */
 
-void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
+void __init_or_module apply_alternatives(struct alt_instr *start,
+					 struct alt_instr *end)
 {
 	struct alt_instr *a;
 	char insnbuf[MAX_PATCH_LEN];
@@ -279,9 +285,10 @@ static LIST_HEAD(smp_alt_modules);
 static DEFINE_MUTEX(smp_alt);
 static int smp_mode = 1;	/* protected by smp_alt */
 
-void alternatives_smp_module_add(struct module *mod, char *name,
-				 void *locks, void *locks_end,
-				 void *text,  void *text_end)
+void __init_or_module alternatives_smp_module_add(struct module *mod,
+						  char *name,
+						  void *locks, void *locks_end,
+						  void *text,  void *text_end)
 {
 	struct smp_alt_module *smp;
 
@@ -317,7 +324,7 @@ void alternatives_smp_module_add(struct module *mod, char *name,
 	mutex_unlock(&smp_alt);
 }
 
-void alternatives_smp_module_del(struct module *mod)
+void __init_or_module alternatives_smp_module_del(struct module *mod)
 {
 	struct smp_alt_module *item;
 
@@ -386,8 +393,8 @@ void alternatives_smp_switch(int smp)
 #endif
 
 #ifdef CONFIG_PARAVIRT
-void apply_paravirt(struct paravirt_patch_site *start,
-		    struct paravirt_patch_site *end)
+void __init_or_module apply_paravirt(struct paravirt_patch_site *start,
+				     struct paravirt_patch_site *end)
 {
 	struct paravirt_patch_site *p;
 	char insnbuf[MAX_PATCH_LEN];
@@ -485,13 +492,14 @@ void __init alternative_instructions(void)
  * instructions. And on the local CPU you need to be protected again NMI or MCE
  * handlers seeing an inconsistent instruction while you patch.
  */
-void *text_poke_early(void *addr, const void *opcode, size_t len)
+static void *__init_or_module text_poke_early(void *addr, const void *opcode,
+					      size_t len)
 {
 	unsigned long flags;
 	local_irq_save(flags);
 	memcpy(addr, opcode, len);
-	local_irq_restore(flags);
 	sync_core();
+	local_irq_restore(flags);
 	/* Could also do a CLFLUSH here to speed up CPU recovery; but
 	   that causes hangs on some VIA CPUs. */
 	return addr;
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 6c99f503780..98f230f6a28 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -41,9 +41,13 @@ static DEFINE_RWLOCK(amd_iommu_devtable_lock);
 static LIST_HEAD(iommu_pd_list);
 static DEFINE_SPINLOCK(iommu_pd_list_lock);
 
-#ifdef CONFIG_IOMMU_API
+/*
+ * Domain for untranslated devices - only allocated
+ * if iommu=pt passed on kernel cmd line.
+ */
+static struct protection_domain *pt_domain;
+
 static struct iommu_ops amd_iommu_ops;
-#endif
 
 /*
  * general struct to manage commands send to an IOMMU
@@ -55,16 +59,16 @@ struct iommu_cmd {
 static int dma_ops_unity_map(struct dma_ops_domain *dma_dom,
 			     struct unity_map_entry *e);
 static struct dma_ops_domain *find_protection_domain(u16 devid);
-static u64* alloc_pte(struct protection_domain *dom,
-		      unsigned long address, u64
-		      **pte_page, gfp_t gfp);
+static u64 *alloc_pte(struct protection_domain *domain,
+		      unsigned long address, int end_lvl,
+		      u64 **pte_page, gfp_t gfp);
 static void dma_ops_reserve_addresses(struct dma_ops_domain *dom,
 				      unsigned long start_page,
 				      unsigned int pages);
-
-#ifndef BUS_NOTIFY_UNBOUND_DRIVER
-#define BUS_NOTIFY_UNBOUND_DRIVER 0x0005
-#endif
+static void reset_iommu_command_buffer(struct amd_iommu *iommu);
+static u64 *fetch_pte(struct protection_domain *domain,
+		      unsigned long address, int map_size);
+static void update_domain(struct protection_domain *domain);
 
 #ifdef CONFIG_AMD_IOMMU_STATS
 
@@ -138,7 +142,25 @@ static int iommu_has_npcache(struct amd_iommu *iommu)
  *
  ****************************************************************************/
 
-static void iommu_print_event(void *__evt)
+static void dump_dte_entry(u16 devid)
+{
+	int i;
+
+	for (i = 0; i < 8; ++i)
+		pr_err("AMD-Vi: DTE[%d]: %08x\n", i,
+			amd_iommu_dev_table[devid].data[i]);
+}
+
+static void dump_command(unsigned long phys_addr)
+{
+	struct iommu_cmd *cmd = phys_to_virt(phys_addr);
+	int i;
+
+	for (i = 0; i < 4; ++i)
+		pr_err("AMD-Vi: CMD[%d]: %08x\n", i, cmd->data[i]);
+}
+
+static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
 {
 	u32 *event = __evt;
 	int type  = (event[1] >> EVENT_TYPE_SHIFT)  & EVENT_TYPE_MASK;
@@ -147,7 +169,7 @@ static void iommu_print_event(void *__evt)
 	int flags = (event[1] >> EVENT_FLAGS_SHIFT) & EVENT_FLAGS_MASK;
 	u64 address = (u64)(((u64)event[3]) << 32) | event[2];
 
-	printk(KERN_ERR "AMD IOMMU: Event logged [");
+	printk(KERN_ERR "AMD-Vi: Event logged [");
 
 	switch (type) {
 	case EVENT_TYPE_ILL_DEV:
@@ -155,6 +177,7 @@ static void iommu_print_event(void *__evt)
 		       "address=0x%016llx flags=0x%04x]\n",
 		       PCI_BUS(devid), PCI_SLOT(devid), PCI_FUNC(devid),
 		       address, flags);
+		dump_dte_entry(devid);
 		break;
 	case EVENT_TYPE_IO_FAULT:
 		printk("IO_PAGE_FAULT device=%02x:%02x.%x "
@@ -176,6 +199,8 @@ static void iommu_print_event(void *__evt)
 		break;
 	case EVENT_TYPE_ILL_CMD:
 		printk("ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address);
+		reset_iommu_command_buffer(iommu);
+		dump_command(address);
 		break;
 	case EVENT_TYPE_CMD_HARD_ERR:
 		printk("COMMAND_HARDWARE_ERROR address=0x%016llx "
@@ -209,7 +234,7 @@ static void iommu_poll_events(struct amd_iommu *iommu)
 	tail = readl(iommu->mmio_base + MMIO_EVT_TAIL_OFFSET);
 
 	while (head != tail) {
-		iommu_print_event(iommu->evt_buf + head);
+		iommu_print_event(iommu, iommu->evt_buf + head);
 		head = (head + EVENT_ENTRY_SIZE) % iommu->evt_buf_size;
 	}
 
@@ -296,8 +321,11 @@ static void __iommu_wait_for_completion(struct amd_iommu *iommu)
 	status &= ~MMIO_STATUS_COM_WAIT_INT_MASK;
 	writel(status, iommu->mmio_base + MMIO_STATUS_OFFSET);
 
-	if (unlikely(i == EXIT_LOOP_COUNT))
-		panic("AMD IOMMU: Completion wait loop failed\n");
+	if (unlikely(i == EXIT_LOOP_COUNT)) {
+		spin_unlock(&iommu->lock);
+		reset_iommu_command_buffer(iommu);
+		spin_lock(&iommu->lock);
+	}
 }
 
 /*
@@ -445,47 +473,78 @@ static void iommu_flush_tlb_pde(struct amd_iommu *iommu, u16 domid)
 }
 
 /*
+ * This function flushes one domain on one IOMMU
+ */
+static void flush_domain_on_iommu(struct amd_iommu *iommu, u16 domid)
+{
+	struct iommu_cmd cmd;
+	unsigned long flags;
+
+	__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
+				      domid, 1, 1);
+
+	spin_lock_irqsave(&iommu->lock, flags);
+	__iommu_queue_command(iommu, &cmd);
+	__iommu_completion_wait(iommu);
+	__iommu_wait_for_completion(iommu);
+	spin_unlock_irqrestore(&iommu->lock, flags);
+}
+
+static void flush_all_domains_on_iommu(struct amd_iommu *iommu)
+{
+	int i;
+
+	for (i = 1; i < MAX_DOMAIN_ID; ++i) {
+		if (!test_bit(i, amd_iommu_pd_alloc_bitmap))
+			continue;
+		flush_domain_on_iommu(iommu, i);
+	}
+
+}
+
+/*
  * This function is used to flush the IO/TLB for a given protection domain
  * on every IOMMU in the system
  */
 static void iommu_flush_domain(u16 domid)
 {
-	unsigned long flags;
 	struct amd_iommu *iommu;
-	struct iommu_cmd cmd;
 
 	INC_STATS_COUNTER(domain_flush_all);
 
-	__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
-				      domid, 1, 1);
-
-	for_each_iommu(iommu) {
-		spin_lock_irqsave(&iommu->lock, flags);
-		__iommu_queue_command(iommu, &cmd);
-		__iommu_completion_wait(iommu);
-		__iommu_wait_for_completion(iommu);
-		spin_unlock_irqrestore(&iommu->lock, flags);
-	}
+	for_each_iommu(iommu)
+		flush_domain_on_iommu(iommu, domid);
 }
 
 void amd_iommu_flush_all_domains(void)
 {
+	struct amd_iommu *iommu;
+
+	for_each_iommu(iommu)
+		flush_all_domains_on_iommu(iommu);
+}
+
+static void flush_all_devices_for_iommu(struct amd_iommu *iommu)
+{
 	int i;
 
-	for (i = 1; i < MAX_DOMAIN_ID; ++i) {
-		if (!test_bit(i, amd_iommu_pd_alloc_bitmap))
+	for (i = 0; i <= amd_iommu_last_bdf; ++i) {
+		if (iommu != amd_iommu_rlookup_table[i])
 			continue;
-		iommu_flush_domain(i);
+
+		iommu_queue_inv_dev_entry(iommu, i);
+		iommu_completion_wait(iommu);
 	}
 }
 
-void amd_iommu_flush_all_devices(void)
+static void flush_devices_by_domain(struct protection_domain *domain)
 {
 	struct amd_iommu *iommu;
 	int i;
 
 	for (i = 0; i <= amd_iommu_last_bdf; ++i) {
-		if (amd_iommu_pd_table[i] == NULL)
+		if ((domain == NULL && amd_iommu_pd_table[i] == NULL) ||
+		    (amd_iommu_pd_table[i] != domain))
 			continue;
 
 		iommu = amd_iommu_rlookup_table[i];
@@ -497,6 +556,27 @@ void amd_iommu_flush_all_devices(void)
 	}
 }
 
+static void reset_iommu_command_buffer(struct amd_iommu *iommu)
+{
+	pr_err("AMD-Vi: Resetting IOMMU command buffer\n");
+
+	if (iommu->reset_in_progress)
+		panic("AMD-Vi: ILLEGAL_COMMAND_ERROR while resetting command buffer\n");
+
+	iommu->reset_in_progress = true;
+
+	amd_iommu_reset_cmd_buffer(iommu);
+	flush_all_devices_for_iommu(iommu);
+	flush_all_domains_on_iommu(iommu);
+
+	iommu->reset_in_progress = false;
+}
+
+void amd_iommu_flush_all_devices(void)
+{
+	flush_devices_by_domain(NULL);
+}
+
 /****************************************************************************
  *
  * The functions below are used the create the page table mappings for
@@ -514,18 +594,21 @@ void amd_iommu_flush_all_devices(void)
 static int iommu_map_page(struct protection_domain *dom,
 			  unsigned long bus_addr,
 			  unsigned long phys_addr,
-			  int prot)
+			  int prot,
+			  int map_size)
 {
 	u64 __pte, *pte;
 
 	bus_addr  = PAGE_ALIGN(bus_addr);
 	phys_addr = PAGE_ALIGN(phys_addr);
 
-	/* only support 512GB address spaces for now */
-	if (bus_addr > IOMMU_MAP_SIZE_L3 || !(prot & IOMMU_PROT_MASK))
+	BUG_ON(!PM_ALIGNED(map_size, bus_addr));
+	BUG_ON(!PM_ALIGNED(map_size, phys_addr));
+
+	if (!(prot & IOMMU_PROT_MASK))
 		return -EINVAL;
 
-	pte = alloc_pte(dom, bus_addr, NULL, GFP_KERNEL);
+	pte = alloc_pte(dom, bus_addr, map_size, NULL, GFP_KERNEL);
 
 	if (IOMMU_PTE_PRESENT(*pte))
 		return -EBUSY;
@@ -538,29 +621,18 @@ static int iommu_map_page(struct protection_domain *dom,
 
 	*pte = __pte;
 
+	update_domain(dom);
+
 	return 0;
 }
 
 static void iommu_unmap_page(struct protection_domain *dom,
-			     unsigned long bus_addr)
+			     unsigned long bus_addr, int map_size)
 {
-	u64 *pte;
-
-	pte = &dom->pt_root[IOMMU_PTE_L2_INDEX(bus_addr)];
-
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return;
-
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L1_INDEX(bus_addr)];
+	u64 *pte = fetch_pte(dom, bus_addr, map_size);
 
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return;
-
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L1_INDEX(bus_addr)];
-
-	*pte = 0;
+	if (pte)
+		*pte = 0;
 }
 
 /*
@@ -615,7 +687,8 @@ static int dma_ops_unity_map(struct dma_ops_domain *dma_dom,
 
 	for (addr = e->address_start; addr < e->address_end;
 	     addr += PAGE_SIZE) {
-		ret = iommu_map_page(&dma_dom->domain, addr, addr, e->prot);
+		ret = iommu_map_page(&dma_dom->domain, addr, addr, e->prot,
+				     PM_MAP_4k);
 		if (ret)
 			return ret;
 		/*
@@ -670,24 +743,29 @@ static int init_unity_mappings_for_device(struct dma_ops_domain *dma_dom,
  * This function checks if there is a PTE for a given dma address. If
  * there is one, it returns the pointer to it.
  */
-static u64* fetch_pte(struct protection_domain *domain,
-		      unsigned long address)
+static u64 *fetch_pte(struct protection_domain *domain,
+		      unsigned long address, int map_size)
 {
+	int level;
 	u64 *pte;
 
-	pte = &domain->pt_root[IOMMU_PTE_L2_INDEX(address)];
+	level =  domain->mode - 1;
+	pte   = &domain->pt_root[PM_LEVEL_INDEX(level, address)];
 
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return NULL;
+	while (level > map_size) {
+		if (!IOMMU_PTE_PRESENT(*pte))
+			return NULL;
 
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L1_INDEX(address)];
+		level -= 1;
 
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return NULL;
+		pte = IOMMU_PTE_PAGE(*pte);
+		pte = &pte[PM_LEVEL_INDEX(level, address)];
 
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L0_INDEX(address)];
+		if ((PM_PTE_LEVEL(*pte) == 0) && level != map_size) {
+			pte = NULL;
+			break;
+		}
+	}
 
 	return pte;
 }
@@ -727,7 +805,7 @@ static int alloc_new_range(struct amd_iommu *iommu,
 		u64 *pte, *pte_page;
 
 		for (i = 0; i < num_ptes; ++i) {
-			pte = alloc_pte(&dma_dom->domain, address,
+			pte = alloc_pte(&dma_dom->domain, address, PM_MAP_4k,
 					&pte_page, gfp);
 			if (!pte)
 				goto out_free;
@@ -760,16 +838,20 @@ static int alloc_new_range(struct amd_iommu *iommu,
 	for (i = dma_dom->aperture[index]->offset;
 	     i < dma_dom->aperture_size;
 	     i += PAGE_SIZE) {
-		u64 *pte = fetch_pte(&dma_dom->domain, i);
+		u64 *pte = fetch_pte(&dma_dom->domain, i, PM_MAP_4k);
 		if (!pte || !IOMMU_PTE_PRESENT(*pte))
 			continue;
 
 		dma_ops_reserve_addresses(dma_dom, i << PAGE_SHIFT, 1);
 	}
 
+	update_domain(&dma_dom->domain);
+
 	return 0;
 
 out_free:
+	update_domain(&dma_dom->domain);
+
 	free_page((unsigned long)dma_dom->aperture[index]->bitmap);
 
 	kfree(dma_dom->aperture[index]);
@@ -1009,7 +1091,7 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu)
 	dma_dom->domain.id = domain_id_alloc();
 	if (dma_dom->domain.id == 0)
 		goto free_dma_dom;
-	dma_dom->domain.mode = PAGE_MODE_3_LEVEL;
+	dma_dom->domain.mode = PAGE_MODE_2_LEVEL;
 	dma_dom->domain.pt_root = (void *)get_zeroed_page(GFP_KERNEL);
 	dma_dom->domain.flags = PD_DMA_OPS_MASK;
 	dma_dom->domain.priv = dma_dom;
@@ -1063,6 +1145,41 @@ static struct protection_domain *domain_for_device(u16 devid)
 	return dom;
 }
 
+static void set_dte_entry(u16 devid, struct protection_domain *domain)
+{
+	u64 pte_root = virt_to_phys(domain->pt_root);
+
+	pte_root |= (domain->mode & DEV_ENTRY_MODE_MASK)
+		    << DEV_ENTRY_MODE_SHIFT;
+	pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV;
+
+	amd_iommu_dev_table[devid].data[2] = domain->id;
+	amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
+	amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
+
+	amd_iommu_pd_table[devid] = domain;
+}
+
+/*
+ * If a device is not yet associated with a domain, this function does
+ * assigns it visible for the hardware
+ */
+static void __attach_device(struct amd_iommu *iommu,
+			    struct protection_domain *domain,
+			    u16 devid)
+{
+	/* lock domain */
+	spin_lock(&domain->lock);
+
+	/* update DTE entry */
+	set_dte_entry(devid, domain);
+
+	domain->dev_cnt += 1;
+
+	/* ready */
+	spin_unlock(&domain->lock);
+}
+
 /*
  * If a device is not yet associated with a domain, this function does
  * assigns it visible for the hardware
@@ -1072,27 +1189,16 @@ static void attach_device(struct amd_iommu *iommu,
 			  u16 devid)
 {
 	unsigned long flags;
-	u64 pte_root = virt_to_phys(domain->pt_root);
-
-	domain->dev_cnt += 1;
-
-	pte_root |= (domain->mode & DEV_ENTRY_MODE_MASK)
-		    << DEV_ENTRY_MODE_SHIFT;
-	pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV;
 
 	write_lock_irqsave(&amd_iommu_devtable_lock, flags);
-	amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
-	amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
-	amd_iommu_dev_table[devid].data[2] = domain->id;
-
-	amd_iommu_pd_table[devid] = domain;
+	__attach_device(iommu, domain, devid);
 	write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
 
-       /*
-        * We might boot into a crash-kernel here. The crashed kernel
-        * left the caches in the IOMMU dirty. So we have to flush
-        * here to evict all dirty stuff.
-        */
+	/*
+	 * We might boot into a crash-kernel here. The crashed kernel
+	 * left the caches in the IOMMU dirty. So we have to flush
+	 * here to evict all dirty stuff.
+	 */
 	iommu_queue_inv_dev_entry(iommu, devid);
 	iommu_flush_tlb_pde(iommu, domain->id);
 }
@@ -1119,6 +1225,15 @@ static void __detach_device(struct protection_domain *domain, u16 devid)
 
 	/* ready */
 	spin_unlock(&domain->lock);
+
+	/*
+	 * If we run in passthrough mode the device must be assigned to the
+	 * passthrough domain if it is detached from any other domain
+	 */
+	if (iommu_pass_through) {
+		struct amd_iommu *iommu = amd_iommu_rlookup_table[devid];
+		__attach_device(iommu, pt_domain, devid);
+	}
 }
 
 /*
@@ -1164,6 +1279,8 @@ static int device_change_notifier(struct notifier_block *nb,
 	case BUS_NOTIFY_UNBOUND_DRIVER:
 		if (!domain)
 			goto out;
+		if (iommu_pass_through)
+			break;
 		detach_device(domain, devid);
 		break;
 	case BUS_NOTIFY_ADD_DEVICE:
@@ -1292,39 +1409,91 @@ static int get_device_resources(struct device *dev,
 	return 1;
 }
 
+static void update_device_table(struct protection_domain *domain)
+{
+	unsigned long flags;
+	int i;
+
+	for (i = 0; i <= amd_iommu_last_bdf; ++i) {
+		if (amd_iommu_pd_table[i] != domain)
+			continue;
+		write_lock_irqsave(&amd_iommu_devtable_lock, flags);
+		set_dte_entry(i, domain);
+		write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
+	}
+}
+
+static void update_domain(struct protection_domain *domain)
+{
+	if (!domain->updated)
+		return;
+
+	update_device_table(domain);
+	flush_devices_by_domain(domain);
+	iommu_flush_domain(domain->id);
+
+	domain->updated = false;
+}
+
 /*
- * If the pte_page is not yet allocated this function is called
+ * This function is used to add another level to an IO page table. Adding
+ * another level increases the size of the address space by 9 bits to a size up
+ * to 64 bits.
  */
-static u64* alloc_pte(struct protection_domain *dom,
-		      unsigned long address, u64 **pte_page, gfp_t gfp)
+static bool increase_address_space(struct protection_domain *domain,
+				   gfp_t gfp)
+{
+	u64 *pte;
+
+	if (domain->mode == PAGE_MODE_6_LEVEL)
+		/* address space already 64 bit large */
+		return false;
+
+	pte = (void *)get_zeroed_page(gfp);
+	if (!pte)
+		return false;
+
+	*pte             = PM_LEVEL_PDE(domain->mode,
+					virt_to_phys(domain->pt_root));
+	domain->pt_root  = pte;
+	domain->mode    += 1;
+	domain->updated  = true;
+
+	return true;
+}
+
+static u64 *alloc_pte(struct protection_domain *domain,
+		      unsigned long address,
+		      int end_lvl,
+		      u64 **pte_page,
+		      gfp_t gfp)
 {
 	u64 *pte, *page;
+	int level;
 
-	pte = &dom->pt_root[IOMMU_PTE_L2_INDEX(address)];
+	while (address > PM_LEVEL_SIZE(domain->mode))
+		increase_address_space(domain, gfp);
 
-	if (!IOMMU_PTE_PRESENT(*pte)) {
-		page = (u64 *)get_zeroed_page(gfp);
-		if (!page)
-			return NULL;
-		*pte = IOMMU_L2_PDE(virt_to_phys(page));
-	}
+	level =  domain->mode - 1;
+	pte   = &domain->pt_root[PM_LEVEL_INDEX(level, address)];
 
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L1_INDEX(address)];
+	while (level > end_lvl) {
+		if (!IOMMU_PTE_PRESENT(*pte)) {
+			page = (u64 *)get_zeroed_page(gfp);
+			if (!page)
+				return NULL;
+			*pte = PM_LEVEL_PDE(level, virt_to_phys(page));
+		}
 
-	if (!IOMMU_PTE_PRESENT(*pte)) {
-		page = (u64 *)get_zeroed_page(gfp);
-		if (!page)
-			return NULL;
-		*pte = IOMMU_L1_PDE(virt_to_phys(page));
-	}
+		level -= 1;
 
-	pte = IOMMU_PTE_PAGE(*pte);
+		pte = IOMMU_PTE_PAGE(*pte);
 
-	if (pte_page)
-		*pte_page = pte;
+		if (pte_page && level == end_lvl)
+			*pte_page = pte;
 
-	pte = &pte[IOMMU_PTE_L0_INDEX(address)];
+		pte = &pte[PM_LEVEL_INDEX(level, address)];
+	}
 
 	return pte;
 }
@@ -1344,10 +1513,13 @@ static u64* dma_ops_get_pte(struct dma_ops_domain *dom,
 
 	pte = aperture->pte_pages[APERTURE_PAGE_INDEX(address)];
 	if (!pte) {
-		pte = alloc_pte(&dom->domain, address, &pte_page, GFP_ATOMIC);
+		pte = alloc_pte(&dom->domain, address, PM_MAP_4k, &pte_page,
+				GFP_ATOMIC);
 		aperture->pte_pages[APERTURE_PAGE_INDEX(address)] = pte_page;
 	} else
-		pte += IOMMU_PTE_L0_INDEX(address);
+		pte += PM_LEVEL_INDEX(0, address);
+
+	update_domain(&dom->domain);
 
 	return pte;
 }
@@ -1409,7 +1581,7 @@ static void dma_ops_domain_unmap(struct amd_iommu *iommu,
 	if (!pte)
 		return;
 
-	pte += IOMMU_PTE_L0_INDEX(address);
+	pte += PM_LEVEL_INDEX(0, address);
 
 	WARN_ON(!*pte);
 
@@ -1988,19 +2160,47 @@ static void cleanup_domain(struct protection_domain *domain)
 	write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
 }
 
-static int amd_iommu_domain_init(struct iommu_domain *dom)
+static void protection_domain_free(struct protection_domain *domain)
+{
+	if (!domain)
+		return;
+
+	if (domain->id)
+		domain_id_free(domain->id);
+
+	kfree(domain);
+}
+
+static struct protection_domain *protection_domain_alloc(void)
 {
 	struct protection_domain *domain;
 
 	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
 	if (!domain)
-		return -ENOMEM;
+		return NULL;
 
 	spin_lock_init(&domain->lock);
-	domain->mode = PAGE_MODE_3_LEVEL;
 	domain->id = domain_id_alloc();
 	if (!domain->id)
+		goto out_err;
+
+	return domain;
+
+out_err:
+	kfree(domain);
+
+	return NULL;
+}
+
+static int amd_iommu_domain_init(struct iommu_domain *dom)
+{
+	struct protection_domain *domain;
+
+	domain = protection_domain_alloc();
+	if (!domain)
 		goto out_free;
+
+	domain->mode    = PAGE_MODE_3_LEVEL;
 	domain->pt_root = (void *)get_zeroed_page(GFP_KERNEL);
 	if (!domain->pt_root)
 		goto out_free;
@@ -2010,7 +2210,7 @@ static int amd_iommu_domain_init(struct iommu_domain *dom)
 	return 0;
 
 out_free:
-	kfree(domain);
+	protection_domain_free(domain);
 
 	return -ENOMEM;
 }
@@ -2115,7 +2315,7 @@ static int amd_iommu_map_range(struct iommu_domain *dom,
 	paddr &= PAGE_MASK;
 
 	for (i = 0; i < npages; ++i) {
-		ret = iommu_map_page(domain, iova, paddr, prot);
+		ret = iommu_map_page(domain, iova, paddr, prot, PM_MAP_4k);
 		if (ret)
 			return ret;
 
@@ -2136,7 +2336,7 @@ static void amd_iommu_unmap_range(struct iommu_domain *dom,
 	iova  &= PAGE_MASK;
 
 	for (i = 0; i < npages; ++i) {
-		iommu_unmap_page(domain, iova);
+		iommu_unmap_page(domain, iova, PM_MAP_4k);
 		iova  += PAGE_SIZE;
 	}
 
@@ -2151,21 +2351,9 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
 	phys_addr_t paddr;
 	u64 *pte;
 
-	pte = &domain->pt_root[IOMMU_PTE_L2_INDEX(iova)];
-
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return 0;
-
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L1_INDEX(iova)];
-
-	if (!IOMMU_PTE_PRESENT(*pte))
-		return 0;
-
-	pte = IOMMU_PTE_PAGE(*pte);
-	pte = &pte[IOMMU_PTE_L0_INDEX(iova)];
+	pte = fetch_pte(domain, iova, PM_MAP_4k);
 
-	if (!IOMMU_PTE_PRESENT(*pte))
+	if (!pte || !IOMMU_PTE_PRESENT(*pte))
 		return 0;
 
 	paddr  = *pte & IOMMU_PAGE_MASK;
@@ -2191,3 +2379,46 @@ static struct iommu_ops amd_iommu_ops = {
 	.domain_has_cap = amd_iommu_domain_has_cap,
 };
 
+/*****************************************************************************
+ *
+ * The next functions do a basic initialization of IOMMU for pass through
+ * mode
+ *
+ * In passthrough mode the IOMMU is initialized and enabled but not used for
+ * DMA-API translation.
+ *
+ *****************************************************************************/
+
+int __init amd_iommu_init_passthrough(void)
+{
+	struct pci_dev *dev = NULL;
+	u16 devid, devid2;
+
+	/* allocate passthroug domain */
+	pt_domain = protection_domain_alloc();
+	if (!pt_domain)
+		return -ENOMEM;
+
+	pt_domain->mode |= PAGE_MODE_NONE;
+
+	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+		struct amd_iommu *iommu;
+
+		devid = calc_devid(dev->bus->number, dev->devfn);
+		if (devid > amd_iommu_last_bdf)
+			continue;
+
+		devid2 = amd_iommu_alias_table[devid];
+
+		iommu = amd_iommu_rlookup_table[devid2];
+		if (!iommu)
+			continue;
+
+		__attach_device(iommu, pt_domain, devid);
+		__attach_device(iommu, pt_domain, devid2);
+	}
+
+	pr_info("AMD-Vi: Initialized for Passthrough Mode\n");
+
+	return 0;
+}
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c1b17e97252..b4b61d462dc 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -252,7 +252,7 @@ static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
 /* Function to enable the hardware */
 static void iommu_enable(struct amd_iommu *iommu)
 {
-	printk(KERN_INFO "AMD IOMMU: Enabling IOMMU at %s cap 0x%hx\n",
+	printk(KERN_INFO "AMD-Vi: Enabling IOMMU at %s cap 0x%hx\n",
 	       dev_name(&iommu->dev->dev), iommu->cap_ptr);
 
 	iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
@@ -435,6 +435,20 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu)
 }
 
 /*
+ * This function resets the command buffer if the IOMMU stopped fetching
+ * commands from it.
+ */
+void amd_iommu_reset_cmd_buffer(struct amd_iommu *iommu)
+{
+	iommu_feature_disable(iommu, CONTROL_CMDBUF_EN);
+
+	writel(0x00, iommu->mmio_base + MMIO_CMD_HEAD_OFFSET);
+	writel(0x00, iommu->mmio_base + MMIO_CMD_TAIL_OFFSET);
+
+	iommu_feature_enable(iommu, CONTROL_CMDBUF_EN);
+}
+
+/*
  * This function writes the command buffer address to the hardware and
  * enables it.
  */
@@ -450,11 +464,7 @@ static void iommu_enable_command_buffer(struct amd_iommu *iommu)
 	memcpy_toio(iommu->mmio_base + MMIO_CMD_BUF_OFFSET,
 		    &entry, sizeof(entry));
 
-	/* set head and tail to zero manually */
-	writel(0x00, iommu->mmio_base + MMIO_CMD_HEAD_OFFSET);
-	writel(0x00, iommu->mmio_base + MMIO_CMD_TAIL_OFFSET);
-
-	iommu_feature_enable(iommu, CONTROL_CMDBUF_EN);
+	amd_iommu_reset_cmd_buffer(iommu);
 }
 
 static void __init free_command_buffer(struct amd_iommu *iommu)
@@ -858,7 +868,7 @@ static int __init init_iommu_all(struct acpi_table_header *table)
 		switch (*p) {
 		case ACPI_IVHD_TYPE:
 
-			DUMP_printk("IOMMU: device: %02x:%02x.%01x cap: %04x "
+			DUMP_printk("device: %02x:%02x.%01x cap: %04x "
 				    "seg: %d flags: %01x info %04x\n",
 				    PCI_BUS(h->devid), PCI_SLOT(h->devid),
 				    PCI_FUNC(h->devid), h->cap_ptr,
@@ -902,7 +912,7 @@ static int __init iommu_setup_msi(struct amd_iommu *iommu)
 
 	r = request_irq(iommu->dev->irq, amd_iommu_int_handler,
 			IRQF_SAMPLE_RANDOM,
-			"AMD IOMMU",
+			"AMD-Vi",
 			NULL);
 
 	if (r) {
@@ -1150,7 +1160,7 @@ int __init amd_iommu_init(void)
 
 
 	if (no_iommu) {
-		printk(KERN_INFO "AMD IOMMU disabled by kernel command line\n");
+		printk(KERN_INFO "AMD-Vi disabled by kernel command line\n");
 		return 0;
 	}
 
@@ -1242,22 +1252,28 @@ int __init amd_iommu_init(void)
 	if (ret)
 		goto free;
 
-	ret = amd_iommu_init_dma_ops();
+	if (iommu_pass_through)
+		ret = amd_iommu_init_passthrough();
+	else
+		ret = amd_iommu_init_dma_ops();
 	if (ret)
 		goto free;
 
 	enable_iommus();
 
-	printk(KERN_INFO "AMD IOMMU: device isolation ");
+	if (iommu_pass_through)
+		goto out;
+
+	printk(KERN_INFO "AMD-Vi: device isolation ");
 	if (amd_iommu_isolate)
 		printk("enabled\n");
 	else
 		printk("disabled\n");
 
 	if (amd_iommu_unmap_flush)
-		printk(KERN_INFO "AMD IOMMU: IO/TLB flush on unmap enabled\n");
+		printk(KERN_INFO "AMD-Vi: IO/TLB flush on unmap enabled\n");
 	else
-		printk(KERN_INFO "AMD IOMMU: Lazy IO/TLB flushing enabled\n");
+		printk(KERN_INFO "AMD-Vi: Lazy IO/TLB flushing enabled\n");
 
 out:
 	return ret;
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 676debfc170..128111d8ffe 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -20,6 +20,7 @@
 #include <linux/bitops.h>
 #include <linux/ioport.h>
 #include <linux/suspend.h>
+#include <linux/kmemleak.h>
 #include <asm/e820.h>
 #include <asm/io.h>
 #include <asm/iommu.h>
@@ -94,6 +95,11 @@ static u32 __init allocate_aperture(void)
 	 * code for safe
 	 */
 	p = __alloc_bootmem_nopanic(aper_size, aper_size, 512ULL<<20);
+	/*
+	 * Kmemleak should not scan this block as it may not be mapped via the
+	 * kernel direct mapping.
+	 */
+	kmemleak_ignore(p);
 	if (!p || __pa(p)+aper_size > 0xffffffff) {
 		printk(KERN_ERR
 			"Cannot allocate aperture memory hole (%p,%uK)\n",
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 0a1c2830ec6..894aa97f071 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -14,7 +14,7 @@
  *	Mikael Pettersson	:	PM converted to driver model.
  */
 
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/kernel_stat.h>
 #include <linux/mc146818rtc.h>
 #include <linux/acpi_pmtmr.h>
@@ -35,7 +35,8 @@
 #include <linux/smp.h>
 #include <linux/mm.h>
 
-#include <asm/perf_counter.h>
+#include <asm/perf_event.h>
+#include <asm/x86_init.h>
 #include <asm/pgalloc.h>
 #include <asm/atomic.h>
 #include <asm/mpspec.h>
@@ -49,6 +50,7 @@
 #include <asm/mtrr.h>
 #include <asm/smp.h>
 #include <asm/mce.h>
+#include <asm/kvm_para.h>
 
 unsigned int num_processors;
 
@@ -60,7 +62,7 @@ unsigned int boot_cpu_physical_apicid = -1U;
 /*
  * The highest APIC ID seen during enumeration.
  *
- * This determines the messaging protocol we can use: if all APIC IDs
+ * On AMD, this determines the messaging protocol we can use: if all APIC IDs
  * are in the 0 ... 7 range, then we can use logical addressing which
  * has some performance advantages (better broadcasting).
  *
@@ -977,7 +979,7 @@ void lapic_shutdown(void)
 {
 	unsigned long flags;
 
-	if (!cpu_has_apic)
+	if (!cpu_has_apic && !apic_from_smp_config())
 		return;
 
 	local_irq_save(flags);
@@ -1187,7 +1189,7 @@ void __cpuinit setup_local_APIC(void)
 		apic_write(APIC_ESR, 0);
 	}
 #endif
-	perf_counters_lapic_init();
+	perf_events_lapic_init();
 
 	preempt_disable();
 
@@ -1195,8 +1197,7 @@ void __cpuinit setup_local_APIC(void)
 	 * Double-check whether this APIC is really registered.
 	 * This is meaningless in clustered apic mode, so we skip it.
 	 */
-	if (!apic->apic_id_registered())
-		BUG();
+	BUG_ON(!apic->apic_id_registered());
 
 	/*
 	 * Intel recommends to set DFR, LDR and TPR before enabling
@@ -1361,52 +1362,80 @@ void enable_x2apic(void)
 }
 #endif /* CONFIG_X86_X2APIC */
 
-void __init enable_IR_x2apic(void)
+int __init enable_IR(void)
 {
 #ifdef CONFIG_INTR_REMAP
-	int ret;
-	unsigned long flags;
-	struct IO_APIC_route_entry **ioapic_entries = NULL;
-
-	ret = dmar_table_init();
-	if (ret) {
-		pr_debug("dmar_table_init() failed with %d:\n", ret);
-		goto ir_failed;
-	}
-
 	if (!intr_remapping_supported()) {
 		pr_debug("intr-remapping not supported\n");
-		goto ir_failed;
+		return 0;
 	}
 
-
 	if (!x2apic_preenabled && skip_ioapic_setup) {
 		pr_info("Skipped enabling intr-remap because of skipping "
 			"io-apic setup\n");
-		return;
+		return 0;
 	}
 
+	if (enable_intr_remapping(x2apic_supported()))
+		return 0;
+
+	pr_info("Enabled Interrupt-remapping\n");
+
+	return 1;
+
+#endif
+	return 0;
+}
+
+void __init enable_IR_x2apic(void)
+{
+	unsigned long flags;
+	struct IO_APIC_route_entry **ioapic_entries = NULL;
+	int ret, x2apic_enabled = 0;
+	int dmar_table_init_ret = 0;
+
+#ifdef CONFIG_INTR_REMAP
+	dmar_table_init_ret = dmar_table_init();
+	if (dmar_table_init_ret)
+		pr_debug("dmar_table_init() failed with %d:\n",
+				dmar_table_init_ret);
+#endif
+
 	ioapic_entries = alloc_ioapic_entries();
 	if (!ioapic_entries) {
-		pr_info("Allocate ioapic_entries failed: %d\n", ret);
-		goto end;
+		pr_err("Allocate ioapic_entries failed\n");
+		goto out;
 	}
 
 	ret = save_IO_APIC_setup(ioapic_entries);
 	if (ret) {
 		pr_info("Saving IO-APIC state failed: %d\n", ret);
-		goto end;
+		goto out;
 	}
 
 	local_irq_save(flags);
-	mask_IO_APIC_setup(ioapic_entries);
 	mask_8259A();
+	mask_IO_APIC_setup(ioapic_entries);
 
-	ret = enable_intr_remapping(x2apic_supported());
-	if (ret)
-		goto end_restore;
+	if (dmar_table_init_ret)
+		ret = 0;
+	else
+		ret = enable_IR();
 
-	pr_info("Enabled Interrupt-remapping\n");
+	if (!ret) {
+		/* IR is required if there is APIC ID > 255 even when running
+		 * under KVM
+		 */
+		if (max_physical_apicid > 255 || !kvm_para_available())
+			goto nox2apic;
+		/*
+		 * without IR all CPUs can be addressed by IOAPIC/MSI
+		 * only in physical mode
+		 */
+		x2apic_force_phys();
+	}
+
+	x2apic_enabled = 1;
 
 	if (x2apic_supported() && !x2apic_mode) {
 		x2apic_mode = 1;
@@ -1414,41 +1443,25 @@ void __init enable_IR_x2apic(void)
 		pr_info("Enabled x2apic\n");
 	}
 
-end_restore:
-	if (ret)
-		/*
-		 * IR enabling failed
-		 */
+nox2apic:
+	if (!ret) /* IR enabling failed */
 		restore_IO_APIC_setup(ioapic_entries);
-
 	unmask_8259A();
 	local_irq_restore(flags);
 
-end:
+out:
 	if (ioapic_entries)
 		free_ioapic_entries(ioapic_entries);
 
-	if (!ret)
+	if (x2apic_enabled)
 		return;
 
-ir_failed:
 	if (x2apic_preenabled)
-		panic("x2apic enabled by bios. But IR enabling failed");
+		panic("x2apic: enabled by BIOS but kernel init failed.");
 	else if (cpu_has_x2apic)
-		pr_info("Not enabling x2apic,Intr-remapping\n");
-#else
-	if (!cpu_has_x2apic)
-		return;
-
-	if (x2apic_preenabled)
-		panic("x2apic enabled prior OS handover,"
-		      " enable CONFIG_X86_X2APIC, CONFIG_INTR_REMAP");
-#endif
-
-	return;
+		pr_info("Not enabling x2apic, Intr-remapping init failed.\n");
 }
 
-
 #ifdef CONFIG_X86_64
 /*
  * Detect and enable local APICs on non-SMP boards.
@@ -1549,8 +1562,6 @@ no_apic:
 #ifdef CONFIG_X86_64
 void __init early_init_lapic_mapping(void)
 {
-	unsigned long phys_addr;
-
 	/*
 	 * If no local APIC can be found then go out
 	 * : it means there is no mpatable and MADT
@@ -1558,11 +1569,9 @@ void __init early_init_lapic_mapping(void)
 	if (!smp_found_config)
 		return;
 
-	phys_addr = mp_lapic_addr;
-
-	set_fixmap_nocache(FIX_APIC_BASE, phys_addr);
+	set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr);
 	apic_printk(APIC_VERBOSE, "mapped APIC to %16lx (%16lx)\n",
-		    APIC_BASE, phys_addr);
+		    APIC_BASE, mp_lapic_addr);
 
 	/*
 	 * Fetch the APIC ID of the BSP in case we have a
@@ -1651,7 +1660,6 @@ int __init APIC_init_uniprocessor(void)
 	    APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
 		pr_err("BIOS bug, local APIC 0x%x not detected!...\n",
 			boot_cpu_physical_apicid);
-		clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
 		return -1;
 	}
 #endif
@@ -1701,7 +1709,7 @@ int __init APIC_init_uniprocessor(void)
 	localise_nmi_watchdog();
 #endif
 
-	setup_boot_clock();
+	x86_init.timers.setup_percpu_clockev();
 #ifdef CONFIG_X86_64
 	check_nmi_watchdog();
 #endif
@@ -1908,24 +1916,14 @@ void __cpuinit generic_processor_info(int apicid, int version)
 		max_physical_apicid = apicid;
 
 #ifdef CONFIG_X86_32
-	/*
-	 * Would be preferable to switch to bigsmp when CONFIG_HOTPLUG_CPU=y
-	 * but we need to work other dependencies like SMP_SUSPEND etc
-	 * before this can be done without some confusion.
-	 * if (CPU_HOTPLUG_ENABLED || num_processors > 8)
-	 *       - Ashok Raj <ashok.raj@intel.com>
-	 */
-	if (max_physical_apicid >= 8) {
-		switch (boot_cpu_data.x86_vendor) {
-		case X86_VENDOR_INTEL:
-			if (!APIC_XAPIC(version)) {
-				def_to_bigsmp = 0;
-				break;
-			}
-			/* If P4 and above fall through */
-		case X86_VENDOR_AMD:
+	switch (boot_cpu_data.x86_vendor) {
+	case X86_VENDOR_INTEL:
+		if (num_processors > 8)
+			def_to_bigsmp = 1;
+		break;
+	case X86_VENDOR_AMD:
+		if (max_physical_apicid >= 8)
 			def_to_bigsmp = 1;
-		}
 	}
 #endif
 
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index 676cdac385c..77a06413b6b 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -112,7 +112,7 @@ static physid_mask_t bigsmp_ioapic_phys_id_map(physid_mask_t phys_map)
 	return physids_promote(0xFFL);
 }
 
-static int bigsmp_check_phys_apicid_present(int boot_cpu_physical_apicid)
+static int bigsmp_check_phys_apicid_present(int phys_apicid)
 {
 	return 1;
 }
diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c
index 8952a589028..89174f847b4 100644
--- a/arch/x86/kernel/apic/es7000_32.c
+++ b/arch/x86/kernel/apic/es7000_32.c
@@ -167,7 +167,7 @@ static int es7000_apic_is_cluster(void)
 {
 	/* MPENTIUMIII */
 	if (boot_cpu_data.x86 == 6 &&
-	    (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11))
+	    (boot_cpu_data.x86_model >= 7 && boot_cpu_data.x86_model <= 11))
 		return 1;
 
 	return 0;
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index d2ed6c5ddc8..dc69f28489f 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -66,6 +66,8 @@
 #include <asm/apic.h>
 
 #define __apicdebuginit(type) static type __init
+#define for_each_irq_pin(entry, head) \
+	for (entry = head; entry; entry = entry->next)
 
 /*
  *      Is the SiS APIC rmw bug present ?
@@ -85,12 +87,20 @@ int nr_ioapic_registers[MAX_IO_APICS];
 struct mpc_ioapic mp_ioapics[MAX_IO_APICS];
 int nr_ioapics;
 
+/* IO APIC gsi routing info */
+struct mp_ioapic_gsi  mp_gsi_routing[MAX_IO_APICS];
+
 /* MP IRQ source entries */
 struct mpc_intsrc mp_irqs[MAX_IRQ_SOURCES];
 
 /* # of MP IRQ source entries */
 int mp_irq_entries;
 
+/* Number of legacy interrupts */
+static int nr_legacy_irqs __read_mostly = NR_IRQS_LEGACY;
+/* GSI interrupts */
+static int nr_irqs_gsi = NR_IRQS_LEGACY;
+
 #if defined (CONFIG_MCA) || defined (CONFIG_EISA)
 int mp_bus_id_to_type[MAX_MP_BUSSES];
 #endif
@@ -116,15 +126,6 @@ static int __init parse_noapic(char *str)
 }
 early_param("noapic", parse_noapic);
 
-struct irq_pin_list;
-
-/*
- * This is performance-critical, we want to do it O(1)
- *
- * the indexing order of this array favors 1:1 mappings
- * between pins and IRQs.
- */
-
 struct irq_pin_list {
 	int apic, pin;
 	struct irq_pin_list *next;
@@ -139,6 +140,11 @@ static struct irq_pin_list *get_one_free_irq_2_pin(int node)
 	return pin;
 }
 
+/*
+ * This is performance-critical, we want to do it O(1)
+ *
+ * Most irqs are mapped 1:1 with pins.
+ */
 struct irq_cfg {
 	struct irq_pin_list *irq_2_pin;
 	cpumask_var_t domain;
@@ -172,6 +178,12 @@ static struct irq_cfg irq_cfgx[NR_IRQS] = {
 	[15] = { .vector = IRQ15_VECTOR, },
 };
 
+void __init io_apic_disable_legacy(void)
+{
+	nr_legacy_irqs = 0;
+	nr_irqs_gsi = 0;
+}
+
 int __init arch_early_irq_init(void)
 {
 	struct irq_cfg *cfg;
@@ -189,7 +201,7 @@ int __init arch_early_irq_init(void)
 		desc->chip_data = &cfg[i];
 		zalloc_cpumask_var_node(&cfg[i].domain, GFP_NOWAIT, node);
 		zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_NOWAIT, node);
-		if (i < NR_IRQS_LEGACY)
+		if (i < nr_legacy_irqs)
 			cpumask_setall(cfg[i].domain);
 	}
 
@@ -215,17 +227,14 @@ static struct irq_cfg *get_one_free_irq_cfg(int node)
 
 	cfg = kzalloc_node(sizeof(*cfg), GFP_ATOMIC, node);
 	if (cfg) {
-		if (!alloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) {
+		if (!zalloc_cpumask_var_node(&cfg->domain, GFP_ATOMIC, node)) {
 			kfree(cfg);
 			cfg = NULL;
-		} else if (!alloc_cpumask_var_node(&cfg->old_domain,
+		} else if (!zalloc_cpumask_var_node(&cfg->old_domain,
 							  GFP_ATOMIC, node)) {
 			free_cpumask_var(cfg->domain);
 			kfree(cfg);
 			cfg = NULL;
-		} else {
-			cpumask_clear(cfg->domain);
-			cpumask_clear(cfg->old_domain);
 		}
 	}
 
@@ -414,13 +423,10 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
 	unsigned long flags;
 
 	spin_lock_irqsave(&ioapic_lock, flags);
-	entry = cfg->irq_2_pin;
-	for (;;) {
+	for_each_irq_pin(entry, cfg->irq_2_pin) {
 		unsigned int reg;
 		int pin;
 
-		if (!entry)
-			break;
 		pin = entry->pin;
 		reg = io_apic_read(entry->apic, 0x10 + pin*2);
 		/* Is the remote IRR bit set? */
@@ -428,9 +434,6 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
 			spin_unlock_irqrestore(&ioapic_lock, flags);
 			return true;
 		}
-		if (!entry->next)
-			break;
-		entry = entry->next;
 	}
 	spin_unlock_irqrestore(&ioapic_lock, flags);
 
@@ -498,72 +501,68 @@ static void ioapic_mask_entry(int apic, int pin)
  * shared ISA-space IRQs, so we have to support them. We are super
  * fast in the common case, and fast for shared ISA-space IRQs.
  */
-static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin)
+static int
+add_pin_to_irq_node_nopanic(struct irq_cfg *cfg, int node, int apic, int pin)
 {
-	struct irq_pin_list *entry;
+	struct irq_pin_list **last, *entry;
 
-	entry = cfg->irq_2_pin;
-	if (!entry) {
-		entry = get_one_free_irq_2_pin(node);
-		if (!entry) {
-			printk(KERN_ERR "can not alloc irq_2_pin to add %d - %d\n",
-					apic, pin);
-			return;
-		}
-		cfg->irq_2_pin = entry;
-		entry->apic = apic;
-		entry->pin = pin;
-		return;
-	}
-
-	while (entry->next) {
-		/* not again, please */
+	/* don't allow duplicates */
+	last = &cfg->irq_2_pin;
+	for_each_irq_pin(entry, cfg->irq_2_pin) {
 		if (entry->apic == apic && entry->pin == pin)
-			return;
-
-		entry = entry->next;
+			return 0;
+		last = &entry->next;
 	}
 
-	entry->next = get_one_free_irq_2_pin(node);
-	entry = entry->next;
+	entry = get_one_free_irq_2_pin(node);
+	if (!entry) {
+		printk(KERN_ERR "can not alloc irq_pin_list (%d,%d,%d)\n",
+				node, apic, pin);
+		return -ENOMEM;
+	}
 	entry->apic = apic;
 	entry->pin = pin;
+
+	*last = entry;
+	return 0;
+}
+
+static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin)
+{
+	if (add_pin_to_irq_node_nopanic(cfg, node, apic, pin))
+		panic("IO-APIC: failed to add irq-pin. Can not proceed\n");
 }
 
 /*
  * Reroute an IRQ to a different pin.
  */
 static void __init replace_pin_at_irq_node(struct irq_cfg *cfg, int node,
-				      int oldapic, int oldpin,
-				      int newapic, int newpin)
+					   int oldapic, int oldpin,
+					   int newapic, int newpin)
 {
-	struct irq_pin_list *entry = cfg->irq_2_pin;
-	int replaced = 0;
+	struct irq_pin_list *entry;
 
-	while (entry) {
+	for_each_irq_pin(entry, cfg->irq_2_pin) {
 		if (entry->apic == oldapic && entry->pin == oldpin) {
 			entry->apic = newapic;
 			entry->pin = newpin;
-			replaced = 1;
 			/* every one is different, right? */
-			break;
+			return;
 		}
-		entry = entry->next;
 	}
 
-	/* why? call replace before add? */
-	if (!replaced)
-		add_pin_to_irq_node(cfg, node, newapic, newpin);
+	/* old apic/pin didn't exist, so just add new ones */
+	add_pin_to_irq_node(cfg, node, newapic, newpin);
 }
 
-static inline void io_apic_modify_irq(struct irq_cfg *cfg,
-				int mask_and, int mask_or,
-				void (*final)(struct irq_pin_list *entry))
+static void io_apic_modify_irq(struct irq_cfg *cfg,
+			       int mask_and, int mask_or,
+			       void (*final)(struct irq_pin_list *entry))
 {
 	int pin;
 	struct irq_pin_list *entry;
 
-	for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {
+	for_each_irq_pin(entry, cfg->irq_2_pin) {
 		unsigned int reg;
 		pin = entry->pin;
 		reg = io_apic_read(entry->apic, 0x10 + pin * 2);
@@ -580,7 +579,6 @@ static void __unmask_IO_APIC_irq(struct irq_cfg *cfg)
 	io_apic_modify_irq(cfg, ~IO_APIC_REDIR_MASKED, 0, NULL);
 }
 
-#ifdef CONFIG_X86_64
 static void io_apic_sync(struct irq_pin_list *entry)
 {
 	/*
@@ -596,11 +594,6 @@ static void __mask_IO_APIC_irq(struct irq_cfg *cfg)
 {
 	io_apic_modify_irq(cfg, ~0, IO_APIC_REDIR_MASKED, &io_apic_sync);
 }
-#else /* CONFIG_X86_32 */
-static void __mask_IO_APIC_irq(struct irq_cfg *cfg)
-{
-	io_apic_modify_irq(cfg, ~0, IO_APIC_REDIR_MASKED, NULL);
-}
 
 static void __mask_and_edge_IO_APIC_irq(struct irq_cfg *cfg)
 {
@@ -613,7 +606,6 @@ static void __unmask_and_level_IO_APIC_irq(struct irq_cfg *cfg)
 	io_apic_modify_irq(cfg, ~IO_APIC_REDIR_MASKED,
 			IO_APIC_REDIR_LEVEL_TRIGGER, NULL);
 }
-#endif /* CONFIG_X86_32 */
 
 static void mask_IO_APIC_irq_desc(struct irq_desc *desc)
 {
@@ -883,7 +875,7 @@ static int __init find_isa_irq_apic(int irq, int type)
  */
 static int EISA_ELCR(unsigned int irq)
 {
-	if (irq < NR_IRQS_LEGACY) {
+	if (irq < nr_legacy_irqs) {
 		unsigned int port = 0x4d0 + (irq >> 3);
 		return (inb(port) >> (irq & 7)) & 1;
 	}
@@ -1480,7 +1472,7 @@ static void setup_IO_APIC_irq(int apic_id, int pin, unsigned int irq, struct irq
 	}
 
 	ioapic_register_intr(irq, desc, trigger);
-	if (irq < NR_IRQS_LEGACY)
+	if (irq < nr_legacy_irqs)
 		disable_8259A_irq(irq);
 
 	ioapic_write_entry(apic_id, pin, entry);
@@ -1702,12 +1694,8 @@ __apicdebuginit(void) print_IO_APIC(void)
 		if (!entry)
 			continue;
 		printk(KERN_DEBUG "IRQ%d ", irq);
-		for (;;) {
+		for_each_irq_pin(entry, cfg->irq_2_pin)
 			printk("-> %d:%d", entry->apic, entry->pin);
-			if (!entry->next)
-				break;
-			entry = entry->next;
-		}
 		printk("\n");
 	}
 
@@ -1851,7 +1839,7 @@ __apicdebuginit(void) print_PIC(void)
 	unsigned int v;
 	unsigned long flags;
 
-	if (apic_verbosity == APIC_QUIET)
+	if (apic_verbosity == APIC_QUIET || !nr_legacy_irqs)
 		return;
 
 	printk(KERN_DEBUG "\nprinting PIC contents\n");
@@ -1883,7 +1871,7 @@ __apicdebuginit(int) print_all_ICs(void)
 	print_PIC();
 
 	/* don't print out if apic is not there */
-	if (!cpu_has_apic || disable_apic)
+	if (!cpu_has_apic && !apic_from_smp_config())
 		return 0;
 
 	print_all_local_APICs();
@@ -1914,6 +1902,10 @@ void __init enable_IO_APIC(void)
 		spin_unlock_irqrestore(&ioapic_lock, flags);
 		nr_ioapic_registers[apic] = reg_01.bits.entries+1;
 	}
+
+	if (!nr_legacy_irqs)
+		return;
+
 	for(apic = 0; apic < nr_ioapics; apic++) {
 		int pin;
 		/* See if any of the pins is in ExtINT mode */
@@ -1968,6 +1960,9 @@ void disable_IO_APIC(void)
 	 */
 	clear_IO_APIC();
 
+	if (!nr_legacy_irqs)
+		return;
+
 	/*
 	 * If the i8259 is routed through an IOAPIC
 	 * Put that IOAPIC in virtual wire mode
@@ -2001,7 +1996,7 @@ void disable_IO_APIC(void)
 	/*
 	 * Use virtual wire A mode when interrupt remapping is enabled.
 	 */
-	if (cpu_has_apic)
+	if (cpu_has_apic || apic_from_smp_config())
 		disconnect_bsp_APIC(!intr_remapping_enabled &&
 				ioapic_i8259.pin != -1);
 }
@@ -2014,7 +2009,7 @@ void disable_IO_APIC(void)
  * by Matt Domsch <Matt_Domsch@dell.com>  Tue Dec 21 12:25:05 CST 1999
  */
 
-static void __init setup_ioapic_ids_from_mpc(void)
+void __init setup_ioapic_ids_from_mpc(void)
 {
 	union IO_APIC_reg_00 reg_00;
 	physid_mask_t phys_id_present_map;
@@ -2023,9 +2018,8 @@ static void __init setup_ioapic_ids_from_mpc(void)
 	unsigned char old_id;
 	unsigned long flags;
 
-	if (x86_quirks->setup_ioapic_ids && x86_quirks->setup_ioapic_ids())
+	if (acpi_ioapic)
 		return;
-
 	/*
 	 * Don't check I/O APIC IDs for xAPIC systems.  They have
 	 * no meaning without the serial APIC bus.
@@ -2199,7 +2193,7 @@ static unsigned int startup_ioapic_irq(unsigned int irq)
 	struct irq_cfg *cfg;
 
 	spin_lock_irqsave(&ioapic_lock, flags);
-	if (irq < NR_IRQS_LEGACY) {
+	if (irq < nr_legacy_irqs) {
 		disable_8259A_irq(irq);
 		if (i8259A_irq_pending(irq))
 			was_pending = 1;
@@ -2211,7 +2205,6 @@ static unsigned int startup_ioapic_irq(unsigned int irq)
 	return was_pending;
 }
 
-#ifdef CONFIG_X86_64
 static int ioapic_retrigger_irq(unsigned int irq)
 {
 
@@ -2224,14 +2217,6 @@ static int ioapic_retrigger_irq(unsigned int irq)
 
 	return 1;
 }
-#else
-static int ioapic_retrigger_irq(unsigned int irq)
-{
-	apic->send_IPI_self(irq_cfg(irq)->vector);
-
-	return 1;
-}
-#endif
 
 /*
  * Level and edge triggered IO-APIC interrupts need different handling,
@@ -2269,13 +2254,9 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
 	struct irq_pin_list *entry;
 	u8 vector = cfg->vector;
 
-	entry = cfg->irq_2_pin;
-	for (;;) {
+	for_each_irq_pin(entry, cfg->irq_2_pin) {
 		unsigned int reg;
 
-		if (!entry)
-			break;
-
 		apic = entry->apic;
 		pin = entry->pin;
 		/*
@@ -2288,9 +2269,6 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, struct irq
 		reg &= ~IO_APIC_REDIR_VECTOR_MASK;
 		reg |= vector;
 		io_apic_modify(apic, 0x10 + pin*2, reg);
-		if (!entry->next)
-			break;
-		entry = entry->next;
 	}
 }
 
@@ -2515,11 +2493,8 @@ atomic_t irq_mis_count;
 static void ack_apic_level(unsigned int irq)
 {
 	struct irq_desc *desc = irq_to_desc(irq);
-
-#ifdef CONFIG_X86_32
 	unsigned long v;
 	int i;
-#endif
 	struct irq_cfg *cfg;
 	int do_unmask_irq = 0;
 
@@ -2532,31 +2507,28 @@ static void ack_apic_level(unsigned int irq)
 	}
 #endif
 
-#ifdef CONFIG_X86_32
 	/*
-	* It appears there is an erratum which affects at least version 0x11
-	* of I/O APIC (that's the 82093AA and cores integrated into various
-	* chipsets).  Under certain conditions a level-triggered interrupt is
-	* erroneously delivered as edge-triggered one but the respective IRR
-	* bit gets set nevertheless.  As a result the I/O unit expects an EOI
-	* message but it will never arrive and further interrupts are blocked
-	* from the source.  The exact reason is so far unknown, but the
-	* phenomenon was observed when two consecutive interrupt requests
-	* from a given source get delivered to the same CPU and the source is
-	* temporarily disabled in between.
-	*
-	* A workaround is to simulate an EOI message manually.  We achieve it
-	* by setting the trigger mode to edge and then to level when the edge
-	* trigger mode gets detected in the TMR of a local APIC for a
-	* level-triggered interrupt.  We mask the source for the time of the
-	* operation to prevent an edge-triggered interrupt escaping meanwhile.
-	* The idea is from Manfred Spraul.  --macro
-	*/
+	 * It appears there is an erratum which affects at least version 0x11
+	 * of I/O APIC (that's the 82093AA and cores integrated into various
+	 * chipsets).  Under certain conditions a level-triggered interrupt is
+	 * erroneously delivered as edge-triggered one but the respective IRR
+	 * bit gets set nevertheless.  As a result the I/O unit expects an EOI
+	 * message but it will never arrive and further interrupts are blocked
+	 * from the source.  The exact reason is so far unknown, but the
+	 * phenomenon was observed when two consecutive interrupt requests
+	 * from a given source get delivered to the same CPU and the source is
+	 * temporarily disabled in between.
+	 *
+	 * A workaround is to simulate an EOI message manually.  We achieve it
+	 * by setting the trigger mode to edge and then to level when the edge
+	 * trigger mode gets detected in the TMR of a local APIC for a
+	 * level-triggered interrupt.  We mask the source for the time of the
+	 * operation to prevent an edge-triggered interrupt escaping meanwhile.
+	 * The idea is from Manfred Spraul.  --macro
+	 */
 	cfg = desc->chip_data;
 	i = cfg->vector;
-
 	v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1));
-#endif
 
 	/*
 	 * We must acknowledge the irq before we move it or the acknowledge will
@@ -2598,7 +2570,7 @@ static void ack_apic_level(unsigned int irq)
 		unmask_IO_APIC_irq_desc(desc);
 	}
 
-#ifdef CONFIG_X86_32
+	/* Tail end of version 0x11 I/O APIC bug workaround */
 	if (!(v & (1 << (i & 0x1f)))) {
 		atomic_inc(&irq_mis_count);
 		spin_lock(&ioapic_lock);
@@ -2606,26 +2578,15 @@ static void ack_apic_level(unsigned int irq)
 		__unmask_and_level_IO_APIC_irq(cfg);
 		spin_unlock(&ioapic_lock);
 	}
-#endif
 }
 
 #ifdef CONFIG_INTR_REMAP
 static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
 {
-	int apic, pin;
 	struct irq_pin_list *entry;
 
-	entry = cfg->irq_2_pin;
-	for (;;) {
-
-		if (!entry)
-			break;
-
-		apic = entry->apic;
-		pin = entry->pin;
-		io_apic_eoi(apic, pin);
-		entry = entry->next;
-	}
+	for_each_irq_pin(entry, cfg->irq_2_pin)
+		io_apic_eoi(entry->apic, entry->pin);
 }
 
 static void
@@ -2710,7 +2671,7 @@ static inline void init_IO_APIC_traps(void)
 			 * so default to an old-fashioned 8259
 			 * interrupt if we can..
 			 */
-			if (irq < NR_IRQS_LEGACY)
+			if (irq < nr_legacy_irqs)
 				make_8259A_irq(irq);
 			else
 				/* Strange. Oh, well.. */
@@ -3046,7 +3007,7 @@ out:
  * the I/O APIC in all cases now.  No actual device should request
  * it anyway.  --macro
  */
-#define PIC_IRQS	(1 << PIC_CASCADE_IR)
+#define PIC_IRQS	(1UL << PIC_CASCADE_IR)
 
 void __init setup_IO_APIC(void)
 {
@@ -3054,21 +3015,19 @@ void __init setup_IO_APIC(void)
 	/*
 	 * calling enable_IO_APIC() is moved to setup_local_APIC for BP
 	 */
-
-	io_apic_irqs = ~PIC_IRQS;
+	io_apic_irqs = nr_legacy_irqs ? ~PIC_IRQS : ~0UL;
 
 	apic_printk(APIC_VERBOSE, "ENABLING IO-APIC IRQs\n");
 	/*
          * Set up IO-APIC IRQ routing.
          */
-#ifdef CONFIG_X86_32
-	if (!acpi_ioapic)
-		setup_ioapic_ids_from_mpc();
-#endif
+	x86_init.mpparse.setup_ioapic_ids();
+
 	sync_Arb_IDs();
 	setup_IO_APIC_irqs();
 	init_IO_APIC_traps();
-	check_timer();
+	if (nr_legacy_irqs)
+		check_timer();
 }
 
 /*
@@ -3169,7 +3128,6 @@ static int __init ioapic_init_sysfs(void)
 
 device_initcall(ioapic_init_sysfs);
 
-static int nr_irqs_gsi = NR_IRQS_LEGACY;
 /*
  * Dynamic irq allocate and deallocation
  */
@@ -3241,8 +3199,7 @@ void destroy_irq(unsigned int irq)
 	cfg = desc->chip_data;
 	dynamic_irq_cleanup(irq);
 	/* connect back irq_cfg */
-	if (desc)
-		desc->chip_data = cfg;
+	desc->chip_data = cfg;
 
 	free_irte(irq);
 	spin_lock_irqsave(&vector_lock, flags);
@@ -3910,9 +3867,13 @@ static int __io_apic_set_pci_routing(struct device *dev, int irq,
 	/*
 	 * IRQs < 16 are already in the irq_2_pin[] map
 	 */
-	if (irq >= NR_IRQS_LEGACY) {
+	if (irq >= nr_legacy_irqs) {
 		cfg = desc->chip_data;
-		add_pin_to_irq_node(cfg, node, ioapic, pin);
+		if (add_pin_to_irq_node_nopanic(cfg, node, ioapic, pin)) {
+			printk(KERN_INFO "can not add pin %d for irq %d\n",
+				pin, irq);
+			return 0;
+		}
 	}
 
 	setup_IO_APIC_irq(ioapic, pin, irq, desc, trigger, polarity);
@@ -3941,11 +3902,28 @@ int io_apic_set_pci_routing(struct device *dev, int irq,
 	return __io_apic_set_pci_routing(dev, irq, irq_attr);
 }
 
-/* --------------------------------------------------------------------------
-                          ACPI-based IOAPIC Configuration
-   -------------------------------------------------------------------------- */
+u8 __init io_apic_unique_id(u8 id)
+{
+#ifdef CONFIG_X86_32
+	if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) &&
+	    !APIC_XAPIC(apic_version[boot_cpu_physical_apicid]))
+		return io_apic_get_unique_id(nr_ioapics, id);
+	else
+		return id;
+#else
+	int i;
+	DECLARE_BITMAP(used, 256);
 
-#ifdef CONFIG_ACPI
+	bitmap_zero(used, 256);
+	for (i = 0; i < nr_ioapics; i++) {
+		struct mpc_ioapic *ia = &mp_ioapics[i];
+		__set_bit(ia->apicid, used);
+	}
+	if (!test_bit(id, used))
+		return id;
+	return find_first_zero_bit(used, 256);
+#endif
+}
 
 #ifdef CONFIG_X86_32
 int __init io_apic_get_unique_id(int ioapic, int apic_id)
@@ -4054,8 +4032,6 @@ int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
 	return 0;
 }
 
-#endif /* CONFIG_ACPI */
-
 /*
  * This function currently is only a helper for the i386 smp boot process where
  * we need to reprogram the ioredtbls to cater for the cpus which have come online
@@ -4109,7 +4085,7 @@ void __init setup_ioapic_dest(void)
 
 static struct resource *ioapic_resources;
 
-static struct resource * __init ioapic_setup_resources(void)
+static struct resource * __init ioapic_setup_resources(int nr_ioapics)
 {
 	unsigned long n;
 	struct resource *res;
@@ -4125,15 +4101,13 @@ static struct resource * __init ioapic_setup_resources(void)
 	mem = alloc_bootmem(n);
 	res = (void *)mem;
 
-	if (mem != NULL) {
-		mem += sizeof(struct resource) * nr_ioapics;
+	mem += sizeof(struct resource) * nr_ioapics;
 
-		for (i = 0; i < nr_ioapics; i++) {
-			res[i].name = mem;
-			res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-			sprintf(mem,  "IOAPIC %u", i);
-			mem += IOAPIC_RESOURCE_NAME_SIZE;
-		}
+	for (i = 0; i < nr_ioapics; i++) {
+		res[i].name = mem;
+		res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+		sprintf(mem,  "IOAPIC %u", i);
+		mem += IOAPIC_RESOURCE_NAME_SIZE;
 	}
 
 	ioapic_resources = res;
@@ -4147,7 +4121,7 @@ void __init ioapic_init_mappings(void)
 	struct resource *ioapic_res;
 	int i;
 
-	ioapic_res = ioapic_setup_resources();
+	ioapic_res = ioapic_setup_resources(nr_ioapics);
 	for (i = 0; i < nr_ioapics; i++) {
 		if (smp_found_config) {
 			ioapic_phys = mp_ioapics[i].apicaddr;
@@ -4176,11 +4150,9 @@ fake_ioapic_page:
 			    __fix_to_virt(idx), ioapic_phys);
 		idx++;
 
-		if (ioapic_res != NULL) {
-			ioapic_res->start = ioapic_phys;
-			ioapic_res->end = ioapic_phys + (4 * 1024) - 1;
-			ioapic_res++;
-		}
+		ioapic_res->start = ioapic_phys;
+		ioapic_res->end = ioapic_phys + (4 * 1024) - 1;
+		ioapic_res++;
 	}
 }
 
@@ -4201,3 +4173,76 @@ void __init ioapic_insert_resources(void)
 		r++;
 	}
 }
+
+int mp_find_ioapic(int gsi)
+{
+	int i = 0;
+
+	/* Find the IOAPIC that manages this GSI. */
+	for (i = 0; i < nr_ioapics; i++) {
+		if ((gsi >= mp_gsi_routing[i].gsi_base)
+		    && (gsi <= mp_gsi_routing[i].gsi_end))
+			return i;
+	}
+
+	printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi);
+	return -1;
+}
+
+int mp_find_ioapic_pin(int ioapic, int gsi)
+{
+	if (WARN_ON(ioapic == -1))
+		return -1;
+	if (WARN_ON(gsi > mp_gsi_routing[ioapic].gsi_end))
+		return -1;
+
+	return gsi - mp_gsi_routing[ioapic].gsi_base;
+}
+
+static int bad_ioapic(unsigned long address)
+{
+	if (nr_ioapics >= MAX_IO_APICS) {
+		printk(KERN_WARNING "WARING: Max # of I/O APICs (%d) exceeded "
+		       "(found %d), skipping\n", MAX_IO_APICS, nr_ioapics);
+		return 1;
+	}
+	if (!address) {
+		printk(KERN_WARNING "WARNING: Bogus (zero) I/O APIC address"
+		       " found in table, skipping!\n");
+		return 1;
+	}
+	return 0;
+}
+
+void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
+{
+	int idx = 0;
+
+	if (bad_ioapic(address))
+		return;
+
+	idx = nr_ioapics;
+
+	mp_ioapics[idx].type = MP_IOAPIC;
+	mp_ioapics[idx].flags = MPC_APIC_USABLE;
+	mp_ioapics[idx].apicaddr = address;
+
+	set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
+	mp_ioapics[idx].apicid = io_apic_unique_id(id);
+	mp_ioapics[idx].apicver = io_apic_get_version(idx);
+
+	/*
+	 * Build basic GSI lookup table to facilitate gsi->io_apic lookups
+	 * and to prevent reprogramming of IOAPIC pins (PCI GSIs).
+	 */
+	mp_gsi_routing[idx].gsi_base = gsi_base;
+	mp_gsi_routing[idx].gsi_end = gsi_base +
+	    io_apic_get_redir_entries(idx);
+
+	printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, "
+	       "GSI %d-%d\n", idx, mp_ioapics[idx].apicid,
+	       mp_ioapics[idx].apicver, mp_ioapics[idx].apicaddr,
+	       mp_gsi_routing[idx].gsi_base, mp_gsi_routing[idx].gsi_end);
+
+	nr_ioapics++;
+}
diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c
index 6ef00ba4c88..08385e090a6 100644
--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -153,7 +153,7 @@ int safe_smp_processor_id(void)
 {
 	int apicid, cpuid;
 
-	if (!boot_cpu_has(X86_FEATURE_APIC))
+	if (!cpu_has_apic)
 		return 0;
 
 	apicid = hard_smp_processor_id();
diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c
index b3025b43b63..7ff61d6a188 100644
--- a/arch/x86/kernel/apic/nmi.c
+++ b/arch/x86/kernel/apic/nmi.c
@@ -39,7 +39,7 @@
 int unknown_nmi_panic;
 int nmi_watchdog_enabled;
 
-static cpumask_var_t backtrace_mask;
+static cpumask_t backtrace_mask __read_mostly;
 
 /* nmi_active:
  * >0: the lapic NMI watchdog is active, but can be disabled
@@ -66,7 +66,7 @@ static inline unsigned int get_nmi_count(int cpu)
 
 static inline int mce_in_progress(void)
 {
-#if defined(CONFIG_X86_NEW_MCE)
+#if defined(CONFIG_X86_MCE)
 	return atomic_read(&mce_entry) > 0;
 #endif
 	return 0;
@@ -138,7 +138,6 @@ int __init check_nmi_watchdog(void)
 	if (!prev_nmi_count)
 		goto error;
 
-	alloc_cpumask_var(&backtrace_mask, GFP_KERNEL|__GFP_ZERO);
 	printk(KERN_INFO "Testing NMI watchdog ... ");
 
 #ifdef CONFIG_SMP
@@ -415,14 +414,17 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
 	}
 
 	/* We can be called before check_nmi_watchdog, hence NULL check. */
-	if (backtrace_mask != NULL && cpumask_test_cpu(cpu, backtrace_mask)) {
+	if (cpumask_test_cpu(cpu, &backtrace_mask)) {
 		static DEFINE_SPINLOCK(lock);	/* Serialise the printks */
 
 		spin_lock(&lock);
 		printk(KERN_WARNING "NMI backtrace for cpu %d\n", cpu);
+		show_regs(regs);
 		dump_stack();
 		spin_unlock(&lock);
-		cpumask_clear_cpu(cpu, backtrace_mask);
+		cpumask_clear_cpu(cpu, &backtrace_mask);
+
+		rc = 1;
 	}
 
 	/* Could check oops_in_progress here too, but it's safer not to */
@@ -506,14 +508,14 @@ static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu)
 /*
  * proc handler for /proc/sys/kernel/nmi
  */
-int proc_nmi_enabled(struct ctl_table *table, int write, struct file *file,
+int proc_nmi_enabled(struct ctl_table *table, int write,
 			void __user *buffer, size_t *length, loff_t *ppos)
 {
 	int old_state;
 
 	nmi_watchdog_enabled = (atomic_read(&nmi_active) > 0) ? 1 : 0;
 	old_state = nmi_watchdog_enabled;
-	proc_dointvec(table, write, file, buffer, length, ppos);
+	proc_dointvec(table, write, buffer, length, ppos);
 	if (!!old_state == !!nmi_watchdog_enabled)
 		return 0;
 
@@ -552,14 +554,18 @@ int do_nmi_callback(struct pt_regs *regs, int cpu)
 	return 0;
 }
 
-void __trigger_all_cpu_backtrace(void)
+void arch_trigger_all_cpu_backtrace(void)
 {
 	int i;
 
-	cpumask_copy(backtrace_mask, cpu_online_mask);
+	cpumask_copy(&backtrace_mask, cpu_online_mask);
+
+	printk(KERN_INFO "sending NMI to all CPUs:\n");
+	apic->send_IPI_all(NMI_VECTOR);
+
 	/* Wait for up to 10 seconds for all CPUs to do the backtrace */
 	for (i = 0; i < 10 * 1000; i++) {
-		if (cpumask_empty(backtrace_mask))
+		if (cpumask_empty(&backtrace_mask))
 			break;
 		mdelay(1);
 	}
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
index ca96e68f0d2..efa00e2b850 100644
--- a/arch/x86/kernel/apic/numaq_32.c
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -66,7 +66,6 @@ struct mpc_trans {
 	unsigned short			trans_reserved;
 };
 
-/* x86_quirks member */
 static int				mpc_record;
 
 static struct mpc_trans			*translation_table[MAX_MPC_ENTRY];
@@ -130,10 +129,9 @@ void __cpuinit numaq_tsc_disable(void)
 	}
 }
 
-static int __init numaq_pre_time_init(void)
+static void __init numaq_tsc_init(void)
 {
 	numaq_tsc_disable();
-	return 0;
 }
 
 static inline int generate_logical_apicid(int quad, int phys_apicid)
@@ -177,6 +175,19 @@ static void mpc_oem_pci_bus(struct mpc_bus *m)
 	quad_local_to_mp_bus_id[quad][local] = m->busid;
 }
 
+/*
+ * Called from mpparse code.
+ * mode = 0: prescan
+ * mode = 1: one mpc entry scanned
+ */
+static void numaq_mpc_record(unsigned int mode)
+{
+	if (!mode)
+		mpc_record = 0;
+	else
+		mpc_record++;
+}
+
 static void __init MP_translation_info(struct mpc_trans *m)
 {
 	printk(KERN_INFO
@@ -206,9 +217,9 @@ static int __init mpf_checksum(unsigned char *mp, int len)
 /*
  * Read/parse the MPC oem tables
  */
-static void __init
- smp_read_mpc_oem(struct mpc_oemtable *oemtable, unsigned short oemsize)
+static void __init smp_read_mpc_oem(struct mpc_table *mpc)
 {
+	struct mpc_oemtable *oemtable = (void *)(long)mpc->oemptr;
 	int count = sizeof(*oemtable);	/* the header size */
 	unsigned char *oemptr = ((unsigned char *)oemtable) + count;
 
@@ -250,29 +261,6 @@ static void __init
 	}
 }
 
-static int __init numaq_setup_ioapic_ids(void)
-{
-	/* so can skip it */
-	return 1;
-}
-
-static struct x86_quirks numaq_x86_quirks __initdata = {
-	.arch_pre_time_init		= numaq_pre_time_init,
-	.arch_time_init			= NULL,
-	.arch_pre_intr_init		= NULL,
-	.arch_memory_setup		= NULL,
-	.arch_intr_init			= NULL,
-	.arch_trap_init			= NULL,
-	.mach_get_smp_config		= NULL,
-	.mach_find_smp_config		= NULL,
-	.mpc_record			= &mpc_record,
-	.mpc_apic_id			= mpc_apic_id,
-	.mpc_oem_bus_info		= mpc_oem_bus_info,
-	.mpc_oem_pci_bus		= mpc_oem_pci_bus,
-	.smp_read_mpc_oem		= smp_read_mpc_oem,
-	.setup_ioapic_ids		= numaq_setup_ioapic_ids,
-};
-
 static __init void early_check_numaq(void)
 {
 	/*
@@ -286,8 +274,15 @@ static __init void early_check_numaq(void)
 	if (smp_found_config)
 		early_get_smp_config();
 
-	if (found_numaq)
-		x86_quirks = &numaq_x86_quirks;
+	if (found_numaq) {
+		x86_init.mpparse.mpc_record = numaq_mpc_record;
+		x86_init.mpparse.setup_ioapic_ids = x86_init_noop;
+		x86_init.mpparse.mpc_apic_id = mpc_apic_id;
+		x86_init.mpparse.smp_read_mpc_oem = smp_read_mpc_oem;
+		x86_init.mpparse.mpc_oem_pci_bus = mpc_oem_pci_bus;
+		x86_init.mpparse.mpc_oem_bus_info = mpc_oem_bus_info;
+		x86_init.timers.tsc_pre_init = numaq_tsc_init;
+	}
 }
 
 int __init get_memcfg_numaq(void)
@@ -418,7 +413,7 @@ static inline physid_mask_t numaq_apicid_to_cpu_present(int logical_apicid)
 /* Where the IO area was mapped on multiquad, always 0 otherwise */
 void *xquad_portio;
 
-static inline int numaq_check_phys_apicid_present(int boot_cpu_physical_apicid)
+static inline int numaq_check_phys_apicid_present(int phys_apicid)
 {
 	return 1;
 }
diff --git a/arch/x86/kernel/apic/probe_64.c b/arch/x86/kernel/apic/probe_64.c
index bc3e880f9b8..c4cbd3080c1 100644
--- a/arch/x86/kernel/apic/probe_64.c
+++ b/arch/x86/kernel/apic/probe_64.c
@@ -44,29 +44,46 @@ static struct apic *apic_probe[] __initdata = {
 	NULL,
 };
 
+static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
+{
+	return hard_smp_processor_id() >> index_msb;
+}
+
 /*
  * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
  */
 void __init default_setup_apic_routing(void)
 {
 #ifdef CONFIG_X86_X2APIC
-	if (x2apic_mode && (apic != &apic_x2apic_phys &&
+	if (x2apic_mode
 #ifdef CONFIG_X86_UV
-		       apic != &apic_x2apic_uv_x &&
+		       && apic != &apic_x2apic_uv_x
 #endif
-		       apic != &apic_x2apic_cluster)) {
+		       ) {
 		if (x2apic_phys)
 			apic = &apic_x2apic_phys;
 		else
 			apic = &apic_x2apic_cluster;
-		printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
 	}
 #endif
 
 	if (apic == &apic_flat) {
-		if (max_physical_apicid >= 8)
-			apic = &apic_physflat;
-		printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
+		switch (boot_cpu_data.x86_vendor) {
+		case X86_VENDOR_INTEL:
+			if (num_processors > 8)
+				apic = &apic_physflat;
+			break;
+		case X86_VENDOR_AMD:
+			if (max_physical_apicid >= 8)
+				apic = &apic_physflat;
+		}
+	}
+
+	printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
+
+	if (is_vsmp_box()) {
+		/* need to update phys_pkg_id */
+		apic->phys_pkg_id = apicid_phys_pkg_id;
 	}
 
 	/*
diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c
index eafdfbd1ea9..645ecc4ff0b 100644
--- a/arch/x86/kernel/apic/summit_32.c
+++ b/arch/x86/kernel/apic/summit_32.c
@@ -272,7 +272,7 @@ static physid_mask_t summit_apicid_to_cpu_present(int apicid)
 	return physid_mask_of_physid(0);
 }
 
-static int summit_check_phys_apicid_present(int boot_cpu_physical_apicid)
+static int summit_check_phys_apicid_present(int physical_apicid)
 {
 	return 1;
 }
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 601159374e8..f5f5886a6b5 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -389,6 +389,16 @@ static __init void map_gru_high(int max_pnode)
 		map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
 }
 
+static __init void map_mmr_high(int max_pnode)
+{
+	union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
+	int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;
+
+	mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
+	if (mmr.s.enable)
+		map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
+}
+
 static __init void map_mmioh_high(int max_pnode)
 {
 	union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
@@ -643,6 +653,7 @@ void __init uv_system_init(void)
 	}
 
 	map_gru_high(max_pnode);
+	map_mmr_high(max_pnode);
 	map_mmioh_high(max_pnode);
 
 	uv_cpu_init();
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 442b5508893..151ace69a5a 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -403,7 +403,15 @@ static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
 static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
 static struct apm_user *user_list;
 static DEFINE_SPINLOCK(user_list_lock);
-static const struct desc_struct	bad_bios_desc = { { { 0, 0x00409200 } } };
+
+/*
+ * Set up a segment that references the real mode segment 0x40
+ * that extends up to the end of page zero (that we have reserved).
+ * This is for buggy BIOS's that refer to (real mode) segment 0x40
+ * even though they are called in protected mode.
+ */
+static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+			(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
 
 static const char driver_version[] = "1.16ac";	/* no spaces */
 
@@ -2332,15 +2340,6 @@ static int __init apm_init(void)
 	pm_flags |= PM_APM;
 
 	/*
-	 * Set up a segment that references the real mode segment 0x40
-	 * that extends up to the end of page zero (that we have reserved).
-	 * This is for buggy BIOS's that refer to (real mode) segment 0x40
-	 * even though they are called in protected mode.
-	 */
-	set_base(bad_bios_desc, __va((unsigned long)0x40 << 4));
-	_set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4));
-
-	/*
 	 * Set up the long jump entry point to the APM BIOS, which is called
 	 * from inline assembly.
 	 */
@@ -2358,12 +2357,12 @@ static int __init apm_init(void)
 	 * code to that CPU.
 	 */
 	gdt = get_cpu_gdt_table(0);
-	set_base(gdt[APM_CS >> 3],
-		 __va((unsigned long)apm_info.bios.cseg << 4));
-	set_base(gdt[APM_CS_16 >> 3],
-		 __va((unsigned long)apm_info.bios.cseg_16 << 4));
-	set_base(gdt[APM_DS >> 3],
-		 __va((unsigned long)apm_info.bios.dseg << 4));
+	set_desc_base(&gdt[APM_CS >> 3],
+		 (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4));
+	set_desc_base(&gdt[APM_CS_16 >> 3],
+		 (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4));
+	set_desc_base(&gdt[APM_DS >> 3],
+		 (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4));
 
 	proc_create("apm", 0, NULL, &apm_file_ops);
 
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index 898ecc47e12..4a6aeedcd96 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -3,6 +3,7 @@
  * This code generates raw asm output which is post-processed to extract
  * and format the required data.
  */
+#define COMPILE_OFFSETS
 
 #include <linux/crypto.h>
 #include <linux/sched.h> 
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index c1f253dac15..68537e957a9 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -13,7 +13,7 @@ CFLAGS_common.o		:= $(nostackp)
 
 obj-y			:= intel_cacheinfo.o addon_cpuid_features.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
-obj-y			+= vmware.o hypervisor.o
+obj-y			+= vmware.o hypervisor.o sched.o
 
 obj-$(CONFIG_X86_32)	+= bugs.o cmpxchg.o
 obj-$(CONFIG_X86_64)	+= bugs_64.o
@@ -27,7 +27,7 @@ obj-$(CONFIG_CPU_SUP_CENTAUR)		+= centaur.o
 obj-$(CONFIG_CPU_SUP_TRANSMETA_32)	+= transmeta.o
 obj-$(CONFIG_CPU_SUP_UMC_32)		+= umc.o
 
-obj-$(CONFIG_PERF_COUNTERS)		+= perf_counter.o
+obj-$(CONFIG_PERF_EVENTS)		+= perf_event.o
 
 obj-$(CONFIG_X86_MCE)			+= mcheck/
 obj-$(CONFIG_MTRR)			+= mtrr/
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 63fddcd082c..c910a716a71 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -2,7 +2,7 @@
 #include <linux/bitops.h>
 #include <linux/mm.h>
 
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/processor.h>
 #include <asm/apic.h>
 #include <asm/cpu.h>
@@ -45,8 +45,8 @@ static void __cpuinit init_amd_k5(struct cpuinfo_x86 *c)
 #define CBAR_ENB	(0x80000000)
 #define CBAR_KEY	(0X000000CB)
 	if (c->x86_model == 9 || c->x86_model == 10) {
-		if (inl (CBAR) & CBAR_ENB)
-			outl (0 | CBAR_KEY, CBAR);
+		if (inl(CBAR) & CBAR_ENB)
+			outl(0 | CBAR_KEY, CBAR);
 	}
 }
 
@@ -87,9 +87,10 @@ static void __cpuinit init_amd_k6(struct cpuinfo_x86 *c)
 		d = d2-d;
 
 		if (d > 20*K6_BUG_LOOP)
-			printk("system stability may be impaired when more than 32 MB are used.\n");
+			printk(KERN_CONT
+				"system stability may be impaired when more than 32 MB are used.\n");
 		else
-			printk("probably OK (after B9730xxxx).\n");
+			printk(KERN_CONT "probably OK (after B9730xxxx).\n");
 		printk(KERN_INFO "Please see http://membres.lycos.fr/poulot/k6bug.html\n");
 	}
 
@@ -183,7 +184,7 @@ static void __cpuinit amd_k7_smp_check(struct cpuinfo_x86 *c)
 	 * approved Athlon
 	 */
 	WARN_ONCE(1, "WARNING: This combination of AMD"
-		"processors is not suitable for SMP.\n");
+		" processors is not suitable for SMP.\n");
 	if (!test_taint(TAINT_UNSAFE_SMP))
 		add_taint(TAINT_UNSAFE_SMP);
 
@@ -219,8 +220,9 @@ static void __cpuinit init_amd_k7(struct cpuinfo_x86 *c)
 	if ((c->x86_model == 8 && c->x86_mask >= 1) || (c->x86_model > 8)) {
 		rdmsr(MSR_K7_CLK_CTL, l, h);
 		if ((l & 0xfff00000) != 0x20000000) {
-			printk ("CPU: CLK_CTL MSR was %x. Reprogramming to %x\n", l,
-				((l & 0x000fffff)|0x20000000));
+			printk(KERN_INFO
+			    "CPU: CLK_CTL MSR was %x. Reprogramming to %x\n",
+					l, ((l & 0x000fffff)|0x20000000));
 			wrmsr(MSR_K7_CLK_CTL, (l & 0x000fffff)|0x20000000, h);
 		}
 	}
@@ -251,6 +253,64 @@ static int __cpuinit nearby_node(int apicid)
 #endif
 
 /*
+ * Fixup core topology information for AMD multi-node processors.
+ * Assumption 1: Number of cores in each internal node is the same.
+ * Assumption 2: Mixed systems with both single-node and dual-node
+ *               processors are not supported.
+ */
+#ifdef CONFIG_X86_HT
+static void __cpuinit amd_fixup_dcm(struct cpuinfo_x86 *c)
+{
+#ifdef CONFIG_PCI
+	u32 t, cpn;
+	u8 n, n_id;
+	int cpu = smp_processor_id();
+
+	/* fixup topology information only once for a core */
+	if (cpu_has(c, X86_FEATURE_AMD_DCM))
+		return;
+
+	/* check for multi-node processor on boot cpu */
+	t = read_pci_config(0, 24, 3, 0xe8);
+	if (!(t & (1 << 29)))
+		return;
+
+	set_cpu_cap(c, X86_FEATURE_AMD_DCM);
+
+	/* cores per node: each internal node has half the number of cores */
+	cpn = c->x86_max_cores >> 1;
+
+	/* even-numbered NB_id of this dual-node processor */
+	n = c->phys_proc_id << 1;
+
+	/*
+	 * determine internal node id and assign cores fifty-fifty to
+	 * each node of the dual-node processor
+	 */
+	t = read_pci_config(0, 24 + n, 3, 0xe8);
+	n = (t>>30) & 0x3;
+	if (n == 0) {
+		if (c->cpu_core_id < cpn)
+			n_id = 0;
+		else
+			n_id = 1;
+	} else {
+		if (c->cpu_core_id < cpn)
+			n_id = 1;
+		else
+			n_id = 0;
+	}
+
+	/* compute entire NodeID, use llc_shared_map to store sibling info */
+	per_cpu(cpu_llc_id, cpu) = (c->phys_proc_id << 1) + n_id;
+
+	/* fixup core id to be in range from 0 to cpn */
+	c->cpu_core_id = c->cpu_core_id % cpn;
+#endif
+}
+#endif
+
+/*
  * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
  * Assumes number of cores is a power of two.
  */
@@ -267,17 +327,31 @@ static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c)
 	c->phys_proc_id = c->initial_apicid >> bits;
 	/* use socket ID also for last level cache */
 	per_cpu(cpu_llc_id, cpu) = c->phys_proc_id;
+	/* fixup topology information on multi-node processors */
+	if ((c->x86 == 0x10) && (c->x86_model == 9))
+		amd_fixup_dcm(c);
 #endif
 }
 
+int amd_get_nb_id(int cpu)
+{
+	int id = 0;
+#ifdef CONFIG_SMP
+	id = per_cpu(cpu_llc_id, cpu);
+#endif
+	return id;
+}
+EXPORT_SYMBOL_GPL(amd_get_nb_id);
+
 static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c)
 {
 #if defined(CONFIG_NUMA) && defined(CONFIG_X86_64)
 	int cpu = smp_processor_id();
 	int node;
-	unsigned apicid = cpu_has_apic ? hard_smp_processor_id() : c->apicid;
+	unsigned apicid = c->apicid;
+
+	node = per_cpu(cpu_llc_id, cpu);
 
-	node = c->phys_proc_id;
 	if (apicid_to_node[apicid] != NUMA_NO_NODE)
 		node = apicid_to_node[apicid];
 	if (!node_online(node)) {
@@ -398,18 +472,30 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 		u32 level;
 
 		level = cpuid_eax(1);
-		if((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
+		if ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
 			set_cpu_cap(c, X86_FEATURE_REP_GOOD);
 
 		/*
 		 * Some BIOSes incorrectly force this feature, but only K8
 		 * revision D (model = 0x14) and later actually support it.
+		 * (AMD Erratum #110, docId: 25759).
 		 */
-		if (c->x86_model < 0x14)
+		if (c->x86_model < 0x14 && cpu_has(c, X86_FEATURE_LAHF_LM)) {
+			u64 val;
+
 			clear_cpu_cap(c, X86_FEATURE_LAHF_LM);
+			if (!rdmsrl_amd_safe(0xc001100d, &val)) {
+				val &= ~(1ULL << 32);
+				wrmsrl_amd_safe(0xc001100d, val);
+			}
+		}
+
 	}
 	if (c->x86 == 0x10 || c->x86 == 0x11)
 		set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+
+	/* get apicid instead of initial apic id from cpuid */
+	c->apicid = hard_smp_processor_id();
 #else
 
 	/*
@@ -494,27 +580,30 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 		 * benefit in doing so.
 		 */
 		if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) {
-		    printk(KERN_DEBUG "tseg: %010llx\n", tseg);
-		    if ((tseg>>PMD_SHIFT) <
+			printk(KERN_DEBUG "tseg: %010llx\n", tseg);
+			if ((tseg>>PMD_SHIFT) <
 				(max_low_pfn_mapped>>(PMD_SHIFT-PAGE_SHIFT)) ||
-			((tseg>>PMD_SHIFT) <
+				((tseg>>PMD_SHIFT) <
 				(max_pfn_mapped>>(PMD_SHIFT-PAGE_SHIFT)) &&
-			 (tseg>>PMD_SHIFT) >= (1ULL<<(32 - PMD_SHIFT))))
-			set_memory_4k((unsigned long)__va(tseg), 1);
+				(tseg>>PMD_SHIFT) >= (1ULL<<(32 - PMD_SHIFT))))
+				set_memory_4k((unsigned long)__va(tseg), 1);
 		}
 	}
 #endif
 }
 
 #ifdef CONFIG_X86_32
-static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c, unsigned int size)
+static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c,
+							unsigned int size)
 {
 	/* AMD errata T13 (order #21922) */
 	if ((c->x86 == 6)) {
-		if (c->x86_model == 3 && c->x86_mask == 0)	/* Duron Rev A0 */
+		/* Duron Rev A0 */
+		if (c->x86_model == 3 && c->x86_mask == 0)
 			size = 64;
+		/* Tbird rev A1/A2 */
 		if (c->x86_model == 4 &&
-		    (c->x86_mask == 0 || c->x86_mask == 1))	/* Tbird rev A1/A2 */
+			(c->x86_mask == 0 || c->x86_mask == 1))
 			size = 256;
 	}
 	return size;
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index c8e315f1aa8..01a26521239 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -81,7 +81,7 @@ static void __init check_fpu(void)
 
 	boot_cpu_data.fdiv_bug = fdiv_bug;
 	if (boot_cpu_data.fdiv_bug)
-		printk("Hmm, FPU with FDIV bug.\n");
+		printk(KERN_WARNING "Hmm, FPU with FDIV bug.\n");
 }
 
 static void __init check_hlt(void)
@@ -98,7 +98,7 @@ static void __init check_hlt(void)
 	halt();
 	halt();
 	halt();
-	printk("OK.\n");
+	printk(KERN_CONT "OK.\n");
 }
 
 /*
@@ -122,9 +122,9 @@ static void __init check_popad(void)
 	 * CPU hard. Too bad.
 	 */
 	if (res != 12345678)
-		printk("Buggy.\n");
+		printk(KERN_CONT "Buggy.\n");
 	else
-		printk("OK.\n");
+		printk(KERN_CONT "OK.\n");
 #endif
 }
 
@@ -156,7 +156,7 @@ void __init check_bugs(void)
 {
 	identify_boot_cpu();
 #ifndef CONFIG_SMP
-	printk("CPU: ");
+	printk(KERN_INFO "CPU: ");
 	print_cpu_info(&boot_cpu_data);
 #endif
 	check_config();
diff --git a/arch/x86/kernel/cpu/bugs_64.c b/arch/x86/kernel/cpu/bugs_64.c
index 9a3ed0649d4..04f0fe5af83 100644
--- a/arch/x86/kernel/cpu/bugs_64.c
+++ b/arch/x86/kernel/cpu/bugs_64.c
@@ -15,7 +15,7 @@ void __init check_bugs(void)
 {
 	identify_boot_cpu();
 #if !defined(CONFIG_SMP)
-	printk("CPU: ");
+	printk(KERN_INFO "CPU: ");
 	print_cpu_info(&boot_cpu_data);
 #endif
 	alternative_instructions();
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 5ce60a88027..cc25c2b4a56 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -13,13 +13,13 @@
 #include <linux/io.h>
 
 #include <asm/stackprotector.h>
-#include <asm/perf_counter.h>
+#include <asm/perf_event.h>
 #include <asm/mmu_context.h>
 #include <asm/hypervisor.h>
 #include <asm/processor.h>
 #include <asm/sections.h>
-#include <asm/topology.h>
-#include <asm/cpumask.h>
+#include <linux/topology.h>
+#include <linux/cpumask.h>
 #include <asm/pgtable.h>
 #include <asm/atomic.h>
 #include <asm/proto.h>
@@ -28,13 +28,12 @@
 #include <asm/desc.h>
 #include <asm/i387.h>
 #include <asm/mtrr.h>
-#include <asm/numa.h>
+#include <linux/numa.h>
 #include <asm/asm.h>
 #include <asm/cpu.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
 #include <asm/pat.h>
-#include <asm/smp.h>
 
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/uv/uv.h>
@@ -94,45 +93,45 @@ DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = {
 	 * TLS descriptors are currently at a different place compared to i386.
 	 * Hopefully nobody expects them at a fixed place (Wine?)
 	 */
-	[GDT_ENTRY_KERNEL32_CS]		= { { { 0x0000ffff, 0x00cf9b00 } } },
-	[GDT_ENTRY_KERNEL_CS]		= { { { 0x0000ffff, 0x00af9b00 } } },
-	[GDT_ENTRY_KERNEL_DS]		= { { { 0x0000ffff, 0x00cf9300 } } },
-	[GDT_ENTRY_DEFAULT_USER32_CS]	= { { { 0x0000ffff, 0x00cffb00 } } },
-	[GDT_ENTRY_DEFAULT_USER_DS]	= { { { 0x0000ffff, 0x00cff300 } } },
-	[GDT_ENTRY_DEFAULT_USER_CS]	= { { { 0x0000ffff, 0x00affb00 } } },
+	[GDT_ENTRY_KERNEL32_CS]		= GDT_ENTRY_INIT(0xc09b, 0, 0xfffff),
+	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xa09b, 0, 0xfffff),
+	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc093, 0, 0xfffff),
+	[GDT_ENTRY_DEFAULT_USER32_CS]	= GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff),
+	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff),
+	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff),
 #else
-	[GDT_ENTRY_KERNEL_CS]		= { { { 0x0000ffff, 0x00cf9a00 } } },
-	[GDT_ENTRY_KERNEL_DS]		= { { { 0x0000ffff, 0x00cf9200 } } },
-	[GDT_ENTRY_DEFAULT_USER_CS]	= { { { 0x0000ffff, 0x00cffa00 } } },
-	[GDT_ENTRY_DEFAULT_USER_DS]	= { { { 0x0000ffff, 0x00cff200 } } },
+	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xc09a, 0, 0xfffff),
+	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
+	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff),
+	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff),
 	/*
 	 * Segments used for calling PnP BIOS have byte granularity.
 	 * They code segments and data segments have fixed 64k limits,
 	 * the transfer segment sizes are set at run time.
 	 */
 	/* 32-bit code */
-	[GDT_ENTRY_PNPBIOS_CS32]	= { { { 0x0000ffff, 0x00409a00 } } },
+	[GDT_ENTRY_PNPBIOS_CS32]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
 	/* 16-bit code */
-	[GDT_ENTRY_PNPBIOS_CS16]	= { { { 0x0000ffff, 0x00009a00 } } },
+	[GDT_ENTRY_PNPBIOS_CS16]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
 	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_DS]		= { { { 0x0000ffff, 0x00009200 } } },
+	[GDT_ENTRY_PNPBIOS_DS]		= GDT_ENTRY_INIT(0x0092, 0, 0xffff),
 	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS1]		= { { { 0x00000000, 0x00009200 } } },
+	[GDT_ENTRY_PNPBIOS_TS1]		= GDT_ENTRY_INIT(0x0092, 0, 0),
 	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS2]		= { { { 0x00000000, 0x00009200 } } },
+	[GDT_ENTRY_PNPBIOS_TS2]		= GDT_ENTRY_INIT(0x0092, 0, 0),
 	/*
 	 * The APM segments have byte granularity and their bases
 	 * are set at run time.  All have 64k limits.
 	 */
 	/* 32-bit code */
-	[GDT_ENTRY_APMBIOS_BASE]	= { { { 0x0000ffff, 0x00409a00 } } },
+	[GDT_ENTRY_APMBIOS_BASE]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
 	/* 16-bit code */
-	[GDT_ENTRY_APMBIOS_BASE+1]	= { { { 0x0000ffff, 0x00009a00 } } },
+	[GDT_ENTRY_APMBIOS_BASE+1]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
 	/* data */
-	[GDT_ENTRY_APMBIOS_BASE+2]	= { { { 0x0000ffff, 0x00409200 } } },
+	[GDT_ENTRY_APMBIOS_BASE+2]	= GDT_ENTRY_INIT(0x4092, 0, 0xffff),
 
-	[GDT_ENTRY_ESPFIX_SS]		= { { { 0x0000ffff, 0x00cf9200 } } },
-	[GDT_ENTRY_PERCPU]		= { { { 0x0000ffff, 0x00cf9200 } } },
+	[GDT_ENTRY_ESPFIX_SS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
+	[GDT_ENTRY_PERCPU]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
 	GDT_STACK_CANARY_INIT
 #endif
 } };
@@ -870,7 +869,7 @@ void __init identify_boot_cpu(void)
 #else
 	vgetcpu_set_mode();
 #endif
-	init_hw_perf_counters();
+	init_hw_perf_events();
 }
 
 void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)
@@ -982,18 +981,26 @@ static __init int setup_disablecpuid(char *arg)
 __setup("clearcpuid=", setup_disablecpuid);
 
 #ifdef CONFIG_X86_64
-struct desc_ptr idt_descr = { 256 * 16 - 1, (unsigned long) idt_table };
+struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
 
 DEFINE_PER_CPU_FIRST(union irq_stack_union,
 		     irq_stack_union) __aligned(PAGE_SIZE);
 
-DEFINE_PER_CPU(char *, irq_stack_ptr) =
-	init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE - 64;
+/*
+ * The following four percpu variables are hot.  Align current_task to
+ * cacheline size such that all four fall in the same cacheline.
+ */
+DEFINE_PER_CPU(struct task_struct *, current_task) ____cacheline_aligned =
+	&init_task;
+EXPORT_PER_CPU_SYMBOL(current_task);
 
 DEFINE_PER_CPU(unsigned long, kernel_stack) =
 	(unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE;
 EXPORT_PER_CPU_SYMBOL(kernel_stack);
 
+DEFINE_PER_CPU(char *, irq_stack_ptr) =
+	init_per_cpu_var(irq_stack_union.irq_stack) + IRQ_STACK_SIZE - 64;
+
 DEFINE_PER_CPU(unsigned int, irq_count) = -1;
 
 /*
@@ -1008,8 +1015,7 @@ static const unsigned int exception_stack_sizes[N_EXCEPTION_STACKS] = {
 };
 
 static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks
-	[(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ])
-	__aligned(PAGE_SIZE);
+	[(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ]);
 
 /* May not be marked __init: used by software suspend */
 void syscall_init(void)
@@ -1042,8 +1048,11 @@ DEFINE_PER_CPU(struct orig_ist, orig_ist);
 
 #else	/* CONFIG_X86_64 */
 
+DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
+EXPORT_PER_CPU_SYMBOL(current_task);
+
 #ifdef CONFIG_CC_STACKPROTECTOR
-DEFINE_PER_CPU(unsigned long, stack_canary);
+DEFINE_PER_CPU_ALIGNED(struct stack_canary, stack_canary);
 #endif
 
 /* Make sure %fs and %gs are initialized properly in idle threads */
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
index 6b2a52dd040..dca325c0399 100644
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ b/arch/x86/kernel/cpu/cpu_debug.c
@@ -30,8 +30,8 @@
 #include <asm/apic.h>
 #include <asm/desc.h>
 
-static DEFINE_PER_CPU(struct cpu_cpuX_base, cpu_arr[CPU_REG_ALL_BIT]);
-static DEFINE_PER_CPU(struct cpu_private *, priv_arr[MAX_CPU_FILES]);
+static DEFINE_PER_CPU(struct cpu_cpuX_base [CPU_REG_ALL_BIT], cpu_arr);
+static DEFINE_PER_CPU(struct cpu_private * [MAX_CPU_FILES], priv_arr);
 static DEFINE_PER_CPU(int, cpu_priv_count);
 
 static DEFINE_MUTEX(cpu_debug_lock);
diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index ae9b503220c..7d5c3b0ea8d 100644
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -33,7 +33,7 @@
 #include <linux/cpufreq.h>
 #include <linux/compiler.h>
 #include <linux/dmi.h>
-#include <trace/power.h>
+#include <trace/events/power.h>
 
 #include <linux/acpi.h>
 #include <linux/io.h>
@@ -60,7 +60,6 @@ enum {
 };
 
 #define INTEL_MSR_RANGE		(0xffff)
-#define CPUID_6_ECX_APERFMPERF_CAPABILITY	(0x1)
 
 struct acpi_cpufreq_data {
 	struct acpi_processor_performance *acpi_data;
@@ -71,13 +70,7 @@ struct acpi_cpufreq_data {
 
 static DEFINE_PER_CPU(struct acpi_cpufreq_data *, drv_data);
 
-struct acpi_msr_data {
-	u64 saved_aperf, saved_mperf;
-};
-
-static DEFINE_PER_CPU(struct acpi_msr_data, msr_data);
-
-DEFINE_TRACE(power_mark);
+static DEFINE_PER_CPU(struct aperfmperf, old_perf);
 
 /* acpi_perf_data is a pointer to percpu data. */
 static struct acpi_processor_performance *acpi_perf_data;
@@ -244,23 +237,12 @@ static u32 get_cur_val(const struct cpumask *mask)
 	return cmd.val;
 }
 
-struct perf_pair {
-	union {
-		struct {
-			u32 lo;
-			u32 hi;
-		} split;
-		u64 whole;
-	} aperf, mperf;
-};
-
 /* Called via smp_call_function_single(), on the target CPU */
 static void read_measured_perf_ctrs(void *_cur)
 {
-	struct perf_pair *cur = _cur;
+	struct aperfmperf *am = _cur;
 
-	rdmsr(MSR_IA32_APERF, cur->aperf.split.lo, cur->aperf.split.hi);
-	rdmsr(MSR_IA32_MPERF, cur->mperf.split.lo, cur->mperf.split.hi);
+	get_aperfmperf(am);
 }
 
 /*
@@ -279,63 +261,17 @@ static void read_measured_perf_ctrs(void *_cur)
 static unsigned int get_measured_perf(struct cpufreq_policy *policy,
 				      unsigned int cpu)
 {
-	struct perf_pair readin, cur;
-	unsigned int perf_percent;
+	struct aperfmperf perf;
+	unsigned long ratio;
 	unsigned int retval;
 
-	if (smp_call_function_single(cpu, read_measured_perf_ctrs, &readin, 1))
+	if (smp_call_function_single(cpu, read_measured_perf_ctrs, &perf, 1))
 		return 0;
 
-	cur.aperf.whole = readin.aperf.whole -
-				per_cpu(msr_data, cpu).saved_aperf;
-	cur.mperf.whole = readin.mperf.whole -
-				per_cpu(msr_data, cpu).saved_mperf;
-	per_cpu(msr_data, cpu).saved_aperf = readin.aperf.whole;
-	per_cpu(msr_data, cpu).saved_mperf = readin.mperf.whole;
-
-#ifdef __i386__
-	/*
-	 * We dont want to do 64 bit divide with 32 bit kernel
-	 * Get an approximate value. Return failure in case we cannot get
-	 * an approximate value.
-	 */
-	if (unlikely(cur.aperf.split.hi || cur.mperf.split.hi)) {
-		int shift_count;
-		u32 h;
-
-		h = max_t(u32, cur.aperf.split.hi, cur.mperf.split.hi);
-		shift_count = fls(h);
-
-		cur.aperf.whole >>= shift_count;
-		cur.mperf.whole >>= shift_count;
-	}
-
-	if (((unsigned long)(-1) / 100) < cur.aperf.split.lo) {
-		int shift_count = 7;
-		cur.aperf.split.lo >>= shift_count;
-		cur.mperf.split.lo >>= shift_count;
-	}
-
-	if (cur.aperf.split.lo && cur.mperf.split.lo)
-		perf_percent = (cur.aperf.split.lo * 100) / cur.mperf.split.lo;
-	else
-		perf_percent = 0;
-
-#else
-	if (unlikely(((unsigned long)(-1) / 100) < cur.aperf.whole)) {
-		int shift_count = 7;
-		cur.aperf.whole >>= shift_count;
-		cur.mperf.whole >>= shift_count;
-	}
-
-	if (cur.aperf.whole && cur.mperf.whole)
-		perf_percent = (cur.aperf.whole * 100) / cur.mperf.whole;
-	else
-		perf_percent = 0;
-
-#endif
+	ratio = calc_aperfmperf_ratio(&per_cpu(old_perf, cpu), &perf);
+	per_cpu(old_perf, cpu) = perf;
 
-	retval = (policy->cpuinfo.max_freq * perf_percent) / 100;
+	retval = (policy->cpuinfo.max_freq * ratio) >> APERFMPERF_SHIFT;
 
 	return retval;
 }
@@ -394,7 +330,6 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
 	unsigned int next_perf_state = 0; /* Index into perf table */
 	unsigned int i;
 	int result = 0;
-	struct power_trace it;
 
 	dprintk("acpi_cpufreq_target %d (%d)\n", target_freq, policy->cpu);
 
@@ -426,7 +361,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
 		}
 	}
 
-	trace_power_mark(&it, POWER_PSTATE, next_perf_state);
+	trace_power_frequency(POWER_PSTATE, data->freq_table[next_state].frequency);
 
 	switch (data->cpu_feature) {
 	case SYSTEM_INTEL_MSR_CAPABLE:
@@ -588,6 +523,21 @@ static const struct dmi_system_id sw_any_bug_dmi_table[] = {
 	},
 	{ }
 };
+
+static int acpi_cpufreq_blacklist(struct cpuinfo_x86 *c)
+{
+	/* http://www.intel.com/Assets/PDF/specupdate/314554.pdf
+	 * AL30: A Machine Check Exception (MCE) Occurring during an
+	 * Enhanced Intel SpeedStep Technology Ratio Change May Cause
+	 * Both Processor Cores to Lock Up when HT is enabled*/
+	if (c->x86_vendor == X86_VENDOR_INTEL) {
+		if ((c->x86 == 15) &&
+		    (c->x86_model == 6) &&
+		    (c->x86_mask == 8) && smt_capable())
+			return -ENODEV;
+		}
+	return 0;
+}
 #endif
 
 static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
@@ -602,6 +552,12 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	dprintk("acpi_cpufreq_cpu_init\n");
 
+#ifdef CONFIG_SMP
+	result = acpi_cpufreq_blacklist(c);
+	if (result)
+		return result;
+#endif
+
 	data = kzalloc(sizeof(struct acpi_cpufreq_data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
@@ -731,12 +687,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	acpi_processor_notify_smm(THIS_MODULE);
 
 	/* Check for APERF/MPERF support in hardware */
-	if (c->x86_vendor == X86_VENDOR_INTEL && c->cpuid_level >= 6) {
-		unsigned int ecx;
-		ecx = cpuid_ecx(6);
-		if (ecx & CPUID_6_ECX_APERFMPERF_CAPABILITY)
-			acpi_cpufreq_driver.getavg = get_measured_perf;
-	}
+	if (cpu_has(c, X86_FEATURE_APERFMPERF))
+		acpi_cpufreq_driver.getavg = get_measured_perf;
 
 	dprintk("CPU%u - ACPI performance management activated.\n", cpu);
 	for (i = 0; i < perf->state_count; i++)
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 2a50ef89100..6394aa5c798 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -605,9 +605,10 @@ static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst,
 	return 0;
 }
 
-static void invalidate_entry(struct powernow_k8_data *data, unsigned int entry)
+static void invalidate_entry(struct cpufreq_frequency_table *powernow_table,
+		unsigned int entry)
 {
-	data->powernow_table[entry].frequency = CPUFREQ_ENTRY_INVALID;
+	powernow_table[entry].frequency = CPUFREQ_ENTRY_INVALID;
 }
 
 static void print_basics(struct powernow_k8_data *data)
@@ -854,6 +855,10 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 		goto err_out;
 	}
 
+	/* fill in data */
+	data->numps = data->acpi_data.state_count;
+	powernow_k8_acpi_pst_values(data, 0);
+
 	if (cpu_family == CPU_HW_PSTATE)
 		ret_val = fill_powernow_table_pstate(data, powernow_table);
 	else
@@ -866,11 +871,8 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 	powernow_table[data->acpi_data.state_count].index = 0;
 	data->powernow_table = powernow_table;
 
-	/* fill in data */
-	data->numps = data->acpi_data.state_count;
 	if (cpumask_first(cpu_core_mask(data->cpu)) == data->cpu)
 		print_basics(data);
-	powernow_k8_acpi_pst_values(data, 0);
 
 	/* notify BIOS that we exist */
 	acpi_processor_notify_smm(THIS_MODULE);
@@ -914,13 +916,13 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data,
 					"bad value %d.\n", i, index);
 			printk(KERN_ERR PFX "Please report to BIOS "
 					"manufacturer\n");
-			invalidate_entry(data, i);
+			invalidate_entry(powernow_table, i);
 			continue;
 		}
 		rdmsr(MSR_PSTATE_DEF_BASE + index, lo, hi);
 		if (!(hi & HW_PSTATE_VALID_MASK)) {
 			dprintk("invalid pstate %d, ignoring\n", index);
-			invalidate_entry(data, i);
+			invalidate_entry(powernow_table, i);
 			continue;
 		}
 
@@ -941,7 +943,6 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
 		struct cpufreq_frequency_table *powernow_table)
 {
 	int i;
-	int cntlofreq = 0;
 
 	for (i = 0; i < data->acpi_data.state_count; i++) {
 		u32 fid;
@@ -970,7 +971,7 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
 		/* verify frequency is OK */
 		if ((freq > (MAX_FREQ * 1000)) || (freq < (MIN_FREQ * 1000))) {
 			dprintk("invalid freq %u kHz, ignoring\n", freq);
-			invalidate_entry(data, i);
+			invalidate_entry(powernow_table, i);
 			continue;
 		}
 
@@ -978,38 +979,17 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
 		 * BIOSs are using "off" to indicate invalid */
 		if (vid == VID_OFF) {
 			dprintk("invalid vid %u, ignoring\n", vid);
-			invalidate_entry(data, i);
+			invalidate_entry(powernow_table, i);
 			continue;
 		}
 
-		/* verify only 1 entry from the lo frequency table */
-		if (fid < HI_FID_TABLE_BOTTOM) {
-			if (cntlofreq) {
-				/* if both entries are the same,
-				 * ignore this one ... */
-				if ((freq != powernow_table[cntlofreq].frequency) ||
-				    (index != powernow_table[cntlofreq].index)) {
-					printk(KERN_ERR PFX
-						"Too many lo freq table "
-						"entries\n");
-					return 1;
-				}
-
-				dprintk("double low frequency table entry, "
-						"ignoring it.\n");
-				invalidate_entry(data, i);
-				continue;
-			} else
-				cntlofreq = i;
-		}
-
 		if (freq != (data->acpi_data.states[i].core_frequency * 1000)) {
 			printk(KERN_INFO PFX "invalid freq entries "
 				"%u kHz vs. %u kHz\n", freq,
 				(unsigned int)
 				(data->acpi_data.states[i].core_frequency
 				 * 1000));
-			invalidate_entry(data, i);
+			invalidate_entry(powernow_table, i);
 			continue;
 		}
 	}
diff --git a/arch/x86/kernel/cpu/cyrix.c b/arch/x86/kernel/cpu/cyrix.c
index 593171e967e..19807b89f05 100644
--- a/arch/x86/kernel/cpu/cyrix.c
+++ b/arch/x86/kernel/cpu/cyrix.c
@@ -3,10 +3,10 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <asm/dma.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/processor-cyrix.h>
 #include <asm/processor-flags.h>
-#include <asm/timer.h>
+#include <linux/timer.h>
 #include <asm/pci-direct.h>
 #include <asm/tsc.h>
 
@@ -282,7 +282,8 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
 		 *  The 5510/5520 companion chips have a funky PIT.
 		 */
 		if (vendor == PCI_VENDOR_ID_CYRIX &&
-	 (device == PCI_DEVICE_ID_CYRIX_5510 || device == PCI_DEVICE_ID_CYRIX_5520))
+			(device == PCI_DEVICE_ID_CYRIX_5510 ||
+					device == PCI_DEVICE_ID_CYRIX_5520))
 			mark_tsc_unstable("cyrix 5510/5520 detected");
 	}
 #endif
@@ -299,7 +300,8 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c)
 			 *  ?  : 0x7x
 			 * GX1 : 0x8x          GX1  datasheet 56
 			 */
-			if ((0x30 <= dir1 && dir1 <= 0x6f) || (0x80 <= dir1 && dir1 <= 0x8f))
+			if ((0x30 <= dir1 && dir1 <= 0x6f) ||
+					(0x80 <= dir1 && dir1 <= 0x8f))
 				geode_configure();
 			return;
 		} else { /* MediaGX */
@@ -427,9 +429,12 @@ static void __cpuinit cyrix_identify(struct cpuinfo_x86 *c)
 			printk(KERN_INFO "Enabling CPUID on Cyrix processor.\n");
 			local_irq_save(flags);
 			ccr3 = getCx86(CX86_CCR3);
-			setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10);       /* enable MAPEN  */
-			setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x80);  /* enable cpuid  */
-			setCx86(CX86_CCR3, ccr3);                       /* disable MAPEN */
+			/* enable MAPEN  */
+			setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10);
+			/* enable cpuid  */
+			setCx86_old(CX86_CCR4, getCx86_old(CX86_CCR4) | 0x80);
+			/* disable MAPEN */
+			setCx86(CX86_CCR3, ccr3);
 			local_irq_restore(flags);
 		}
 	}
diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
index fb5b86af0b0..08be922de33 100644
--- a/arch/x86/kernel/cpu/hypervisor.c
+++ b/arch/x86/kernel/cpu/hypervisor.c
@@ -28,18 +28,10 @@
 static inline void __cpuinit
 detect_hypervisor_vendor(struct cpuinfo_x86 *c)
 {
-	if (vmware_platform()) {
+	if (vmware_platform())
 		c->x86_hyper_vendor = X86_HYPER_VENDOR_VMWARE;
-	} else {
+	else
 		c->x86_hyper_vendor = X86_HYPER_VENDOR_NONE;
-	}
-}
-
-unsigned long get_hypervisor_tsc_freq(void)
-{
-	if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE)
-		return vmware_get_tsc_khz();
-	return 0;
 }
 
 static inline void __cpuinit
@@ -56,3 +48,10 @@ void __cpuinit init_hypervisor(struct cpuinfo_x86 *c)
 	detect_hypervisor_vendor(c);
 	hypervisor_set_feature_bits(c);
 }
+
+void __init init_hypervisor_platform(void)
+{
+	init_hypervisor(&boot_cpu_data);
+	if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE)
+		vmware_platform_setup();
+}
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 3260ab04499..40e1835b35e 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -7,17 +7,17 @@
 #include <linux/sched.h>
 #include <linux/thread_info.h>
 #include <linux/module.h>
+#include <linux/uaccess.h>
 
 #include <asm/processor.h>
 #include <asm/pgtable.h>
 #include <asm/msr.h>
-#include <asm/uaccess.h>
 #include <asm/ds.h>
 #include <asm/bugs.h>
 #include <asm/cpu.h>
 
 #ifdef CONFIG_X86_64
-#include <asm/topology.h>
+#include <linux/topology.h>
 #include <asm/numa_64.h>
 #endif
 
@@ -174,7 +174,8 @@ static void __cpuinit intel_workarounds(struct cpuinfo_x86 *c)
 #ifdef CONFIG_X86_F00F_BUG
 	/*
 	 * All current models of Pentium and Pentium with MMX technology CPUs
-	 * have the F0 0F bug, which lets nonprivileged users lock up the system.
+	 * have the F0 0F bug, which lets nonprivileged users lock up the
+	 * system.
 	 * Note that the workaround only should be initialized once...
 	 */
 	c->f00f_bug = 0;
@@ -207,7 +208,7 @@ static void __cpuinit intel_workarounds(struct cpuinfo_x86 *c)
 			printk (KERN_INFO "CPU: C0 stepping P4 Xeon detected.\n");
 			printk (KERN_INFO "CPU: Disabling hardware prefetching (Errata 037)\n");
 			lo |= MSR_IA32_MISC_ENABLE_PREFETCH_DISABLE;
-			wrmsr (MSR_IA32_MISC_ENABLE, lo, hi);
+			wrmsr(MSR_IA32_MISC_ENABLE, lo, hi);
 		}
 	}
 
@@ -283,7 +284,7 @@ static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
 	/* Intel has a non-standard dependency on %ecx for this CPUID level. */
 	cpuid_count(4, 0, &eax, &ebx, &ecx, &edx);
 	if (eax & 0x1f)
-		return ((eax >> 26) + 1);
+		return (eax >> 26) + 1;
 	else
 		return 1;
 }
@@ -349,6 +350,12 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 			set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON);
 	}
 
+	if (c->cpuid_level > 6) {
+		unsigned ecx = cpuid_ecx(6);
+		if (ecx & 0x01)
+			set_cpu_cap(c, X86_FEATURE_APERFMPERF);
+	}
+
 	if (cpu_has_xmm2)
 		set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
 	if (cpu_has_ds) {
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 789efe217e1..804c40e2bc3 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -3,7 +3,7 @@
  *
  *	Changes:
  *	Venkatesh Pallipadi	: Adding cache identification through cpuid(4)
- *		Ashok Raj <ashok.raj@intel.com>: Work with CPU hotplug infrastructure.
+ *	Ashok Raj <ashok.raj@intel.com>: Work with CPU hotplug infrastructure.
  *	Andi Kleen / Andreas Herrmann	: CPUID4 emulation on AMD.
  */
 
@@ -16,7 +16,7 @@
 #include <linux/pci.h>
 
 #include <asm/processor.h>
-#include <asm/smp.h>
+#include <linux/smp.h>
 #include <asm/k8.h>
 
 #define LVL_1_INST	1
@@ -25,14 +25,15 @@
 #define LVL_3		4
 #define LVL_TRACE	5
 
-struct _cache_table
-{
+struct _cache_table {
 	unsigned char descriptor;
 	char cache_type;
 	short size;
 };
 
-/* all the cache descriptor types we care about (no TLB or trace cache entries) */
+/* All the cache descriptor types we care about (no TLB or
+   trace cache entries) */
+
 static const struct _cache_table __cpuinitconst cache_table[] =
 {
 	{ 0x06, LVL_1_INST, 8 },	/* 4-way set assoc, 32 byte line size */
@@ -105,8 +106,7 @@ static const struct _cache_table __cpuinitconst cache_table[] =
 };
 
 
-enum _cache_type
-{
+enum _cache_type {
 	CACHE_TYPE_NULL	= 0,
 	CACHE_TYPE_DATA = 1,
 	CACHE_TYPE_INST = 2,
@@ -170,31 +170,31 @@ unsigned short			num_cache_leaves;
    Maybe later */
 union l1_cache {
 	struct {
-		unsigned line_size : 8;
-		unsigned lines_per_tag : 8;
-		unsigned assoc : 8;
-		unsigned size_in_kb : 8;
+		unsigned line_size:8;
+		unsigned lines_per_tag:8;
+		unsigned assoc:8;
+		unsigned size_in_kb:8;
 	};
 	unsigned val;
 };
 
 union l2_cache {
 	struct {
-		unsigned line_size : 8;
-		unsigned lines_per_tag : 4;
-		unsigned assoc : 4;
-		unsigned size_in_kb : 16;
+		unsigned line_size:8;
+		unsigned lines_per_tag:4;
+		unsigned assoc:4;
+		unsigned size_in_kb:16;
 	};
 	unsigned val;
 };
 
 union l3_cache {
 	struct {
-		unsigned line_size : 8;
-		unsigned lines_per_tag : 4;
-		unsigned assoc : 4;
-		unsigned res : 2;
-		unsigned size_encoded : 14;
+		unsigned line_size:8;
+		unsigned lines_per_tag:4;
+		unsigned assoc:4;
+		unsigned res:2;
+		unsigned size_encoded:14;
 	};
 	unsigned val;
 };
@@ -241,7 +241,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 	case 0:
 		if (!l1->val)
 			return;
-		assoc = l1->assoc;
+		assoc = assocs[l1->assoc];
 		line_size = l1->line_size;
 		lines_per_tag = l1->lines_per_tag;
 		size_in_kb = l1->size_in_kb;
@@ -249,7 +249,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 	case 2:
 		if (!l2.val)
 			return;
-		assoc = l2.assoc;
+		assoc = assocs[l2.assoc];
 		line_size = l2.line_size;
 		lines_per_tag = l2.lines_per_tag;
 		/* cpu_data has errata corrections for K7 applied */
@@ -258,10 +258,14 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 	case 3:
 		if (!l3.val)
 			return;
-		assoc = l3.assoc;
+		assoc = assocs[l3.assoc];
 		line_size = l3.line_size;
 		lines_per_tag = l3.lines_per_tag;
 		size_in_kb = l3.size_encoded * 512;
+		if (boot_cpu_has(X86_FEATURE_AMD_DCM)) {
+			size_in_kb = size_in_kb >> 1;
+			assoc = assoc >> 1;
+		}
 		break;
 	default:
 		return;
@@ -270,18 +274,14 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
 	eax->split.is_self_initializing = 1;
 	eax->split.type = types[leaf];
 	eax->split.level = levels[leaf];
-	if (leaf == 3)
-		eax->split.num_threads_sharing =
-			current_cpu_data.x86_max_cores - 1;
-	else
-		eax->split.num_threads_sharing = 0;
+	eax->split.num_threads_sharing = 0;
 	eax->split.num_cores_on_die = current_cpu_data.x86_max_cores - 1;
 
 
-	if (assoc == 0xf)
+	if (assoc == 0xffff)
 		eax->split.is_fully_associative = 1;
 	ebx->split.coherency_line_size = line_size - 1;
-	ebx->split.ways_of_associativity = assocs[assoc] - 1;
+	ebx->split.ways_of_associativity = assoc - 1;
 	ebx->split.physical_line_partition = lines_per_tag - 1;
 	ecx->split.number_of_sets = (size_in_kb * 1024) / line_size /
 		(ebx->split.ways_of_associativity + 1) - 1;
@@ -350,7 +350,8 @@ static int __cpuinit find_num_cache_leaves(void)
 
 unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 {
-	unsigned int trace = 0, l1i = 0, l1d = 0, l2 = 0, l3 = 0; /* Cache sizes */
+	/* Cache sizes */
+	unsigned int trace = 0, l1i = 0, l1d = 0, l2 = 0, l3 = 0;
 	unsigned int new_l1d = 0, new_l1i = 0; /* Cache sizes from cpuid(4) */
 	unsigned int new_l2 = 0, new_l3 = 0, i; /* Cache sizes from cpuid(4) */
 	unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb;
@@ -377,8 +378,8 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 
 			retval = cpuid4_cache_lookup_regs(i, &this_leaf);
 			if (retval >= 0) {
-				switch(this_leaf.eax.split.level) {
-				    case 1:
+				switch (this_leaf.eax.split.level) {
+				case 1:
 					if (this_leaf.eax.split.type ==
 							CACHE_TYPE_DATA)
 						new_l1d = this_leaf.size/1024;
@@ -386,19 +387,20 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 							CACHE_TYPE_INST)
 						new_l1i = this_leaf.size/1024;
 					break;
-				    case 2:
+				case 2:
 					new_l2 = this_leaf.size/1024;
 					num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
 					index_msb = get_count_order(num_threads_sharing);
 					l2_id = c->apicid >> index_msb;
 					break;
-				    case 3:
+				case 3:
 					new_l3 = this_leaf.size/1024;
 					num_threads_sharing = 1 + this_leaf.eax.split.num_threads_sharing;
-					index_msb = get_count_order(num_threads_sharing);
+					index_msb = get_count_order(
+							num_threads_sharing);
 					l3_id = c->apicid >> index_msb;
 					break;
-				    default:
+				default:
 					break;
 				}
 			}
@@ -421,22 +423,21 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 		/* Number of times to iterate */
 		n = cpuid_eax(2) & 0xFF;
 
-		for ( i = 0 ; i < n ; i++ ) {
+		for (i = 0 ; i < n ; i++) {
 			cpuid(2, &regs[0], &regs[1], &regs[2], &regs[3]);
 
 			/* If bit 31 is set, this is an unknown format */
-			for ( j = 0 ; j < 3 ; j++ ) {
-				if (regs[j] & (1 << 31)) regs[j] = 0;
-			}
+			for (j = 0 ; j < 3 ; j++)
+				if (regs[j] & (1 << 31))
+					regs[j] = 0;
 
 			/* Byte 0 is level count, not a descriptor */
-			for ( j = 1 ; j < 16 ; j++ ) {
+			for (j = 1 ; j < 16 ; j++) {
 				unsigned char des = dp[j];
 				unsigned char k = 0;
 
 				/* look up this descriptor in the table */
-				while (cache_table[k].descriptor != 0)
-				{
+				while (cache_table[k].descriptor != 0) {
 					if (cache_table[k].descriptor == des) {
 						if (only_trace && cache_table[k].cache_type != LVL_TRACE)
 							break;
@@ -488,14 +489,14 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 	}
 
 	if (trace)
-		printk (KERN_INFO "CPU: Trace cache: %dK uops", trace);
-	else if ( l1i )
-		printk (KERN_INFO "CPU: L1 I cache: %dK", l1i);
+		printk(KERN_INFO "CPU: Trace cache: %dK uops", trace);
+	else if (l1i)
+		printk(KERN_INFO "CPU: L1 I cache: %dK", l1i);
 
 	if (l1d)
-		printk(", L1 D cache: %dK\n", l1d);
+		printk(KERN_CONT ", L1 D cache: %dK\n", l1d);
 	else
-		printk("\n");
+		printk(KERN_CONT "\n");
 
 	if (l2)
 		printk(KERN_INFO "CPU: L2 cache: %dK\n", l2);
@@ -522,6 +523,18 @@ static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
 	int index_msb, i;
 	struct cpuinfo_x86 *c = &cpu_data(cpu);
 
+	if ((index == 3) && (c->x86_vendor == X86_VENDOR_AMD)) {
+		struct cpuinfo_x86 *d;
+		for_each_online_cpu(i) {
+			if (!per_cpu(cpuid4_info, i))
+				continue;
+			d = &cpu_data(i);
+			this_leaf = CPUID4_INFO_IDX(i, index);
+			cpumask_copy(to_cpumask(this_leaf->shared_cpu_map),
+				     d->llc_shared_map);
+		}
+		return;
+	}
 	this_leaf = CPUID4_INFO_IDX(cpu, index);
 	num_threads_sharing = 1 + this_leaf->eax.split.num_threads_sharing;
 
@@ -558,8 +571,13 @@ static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index)
 	}
 }
 #else
-static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index) {}
-static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index) {}
+static void __cpuinit cache_shared_cpu_map_setup(unsigned int cpu, int index)
+{
+}
+
+static void __cpuinit cache_remove_shared_cpu_map(unsigned int cpu, int index)
+{
+}
 #endif
 
 static void __cpuinit free_cache_attributes(unsigned int cpu)
@@ -645,7 +663,7 @@ static DEFINE_PER_CPU(struct _index_kobject *, index_kobject);
 static ssize_t show_##file_name						\
 			(struct _cpuid4_info *this_leaf, char *buf)	\
 {									\
-	return sprintf (buf, "%lu\n", (unsigned long)this_leaf->object + val); \
+	return sprintf(buf, "%lu\n", (unsigned long)this_leaf->object + val); \
 }
 
 show_one_plus(level, eax.split.level, 0);
@@ -656,7 +674,7 @@ show_one_plus(number_of_sets, ecx.split.number_of_sets, 1);
 
 static ssize_t show_size(struct _cpuid4_info *this_leaf, char *buf)
 {
-	return sprintf (buf, "%luK\n", this_leaf->size / 1024);
+	return sprintf(buf, "%luK\n", this_leaf->size / 1024);
 }
 
 static ssize_t show_shared_cpu_map_func(struct _cpuid4_info *this_leaf,
@@ -669,7 +687,7 @@ static ssize_t show_shared_cpu_map_func(struct _cpuid4_info *this_leaf,
 		const struct cpumask *mask;
 
 		mask = to_cpumask(this_leaf->shared_cpu_map);
-		n = type?
+		n = type ?
 			cpulist_scnprintf(buf, len-2, mask) :
 			cpumask_scnprintf(buf, len-2, mask);
 		buf[n++] = '\n';
@@ -800,7 +818,7 @@ static struct _cache_attr cache_disable_0 = __ATTR(cache_disable_0, 0644,
 static struct _cache_attr cache_disable_1 = __ATTR(cache_disable_1, 0644,
 		show_cache_disable_1, store_cache_disable_1);
 
-static struct attribute * default_attrs[] = {
+static struct attribute *default_attrs[] = {
 	&type.attr,
 	&level.attr,
 	&coherency_line_size.attr,
@@ -815,7 +833,7 @@ static struct attribute * default_attrs[] = {
 	NULL
 };
 
-static ssize_t show(struct kobject * kobj, struct attribute * attr, char * buf)
+static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf)
 {
 	struct _cache_attr *fattr = to_attr(attr);
 	struct _index_kobject *this_leaf = to_object(kobj);
@@ -828,8 +846,8 @@ static ssize_t show(struct kobject * kobj, struct attribute * attr, char * buf)
 	return ret;
 }
 
-static ssize_t store(struct kobject * kobj, struct attribute * attr,
-		     const char * buf, size_t count)
+static ssize_t store(struct kobject *kobj, struct attribute *attr,
+		     const char *buf, size_t count)
 {
 	struct _cache_attr *fattr = to_attr(attr);
 	struct _index_kobject *this_leaf = to_object(kobj);
@@ -883,7 +901,7 @@ static int __cpuinit cpuid4_cache_sysfs_init(unsigned int cpu)
 		goto err_out;
 
 	per_cpu(index_kobject, cpu) = kzalloc(
-	    sizeof(struct _index_kobject ) * num_cache_leaves, GFP_KERNEL);
+	    sizeof(struct _index_kobject) * num_cache_leaves, GFP_KERNEL);
 	if (unlikely(per_cpu(index_kobject, cpu) == NULL))
 		goto err_out;
 
@@ -917,7 +935,7 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
 	}
 
 	for (i = 0; i < num_cache_leaves; i++) {
-		this_object = INDEX_KOBJECT_PTR(cpu,i);
+		this_object = INDEX_KOBJECT_PTR(cpu, i);
 		this_object->cpu = cpu;
 		this_object->index = i;
 		retval = kobject_init_and_add(&(this_object->kobj),
@@ -925,9 +943,8 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev)
 					      per_cpu(cache_kobject, cpu),
 					      "index%1lu", i);
 		if (unlikely(retval)) {
-			for (j = 0; j < i; j++) {
-				kobject_put(&(INDEX_KOBJECT_PTR(cpu,j)->kobj));
-			}
+			for (j = 0; j < i; j++)
+				kobject_put(&(INDEX_KOBJECT_PTR(cpu, j)->kobj));
 			kobject_put(per_cpu(cache_kobject, cpu));
 			cpuid4_cache_sysfs_exit(cpu);
 			return retval;
@@ -952,7 +969,7 @@ static void __cpuinit cache_remove_dev(struct sys_device * sys_dev)
 	cpumask_clear_cpu(cpu, to_cpumask(cache_dev_map));
 
 	for (i = 0; i < num_cache_leaves; i++)
-		kobject_put(&(INDEX_KOBJECT_PTR(cpu,i)->kobj));
+		kobject_put(&(INDEX_KOBJECT_PTR(cpu, i)->kobj));
 	kobject_put(per_cpu(cache_kobject, cpu));
 	cpuid4_cache_sysfs_exit(cpu);
 }
@@ -977,8 +994,7 @@ static int __cpuinit cacheinfo_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata cacheinfo_cpu_notifier =
-{
+static struct notifier_block __cpuinitdata cacheinfo_cpu_notifier = {
 	.notifier_call = cacheinfo_cpu_callback,
 };
 
diff --git a/arch/x86/kernel/cpu/mcheck/Makefile b/arch/x86/kernel/cpu/mcheck/Makefile
index 188a1ca5ad2..4ac6d48fe11 100644
--- a/arch/x86/kernel/cpu/mcheck/Makefile
+++ b/arch/x86/kernel/cpu/mcheck/Makefile
@@ -1,11 +1,8 @@
-obj-y				=  mce.o
+obj-y				=  mce.o mce-severity.o
 
-obj-$(CONFIG_X86_NEW_MCE)	+= mce-severity.o
-obj-$(CONFIG_X86_OLD_MCE)	+= k7.o p4.o p6.o
 obj-$(CONFIG_X86_ANCIENT_MCE)	+= winchip.o p5.o
 obj-$(CONFIG_X86_MCE_INTEL)	+= mce_intel.o
 obj-$(CONFIG_X86_MCE_AMD)	+= mce_amd.o
-obj-$(CONFIG_X86_MCE_NONFATAL)	+= non-fatal.o
 obj-$(CONFIG_X86_MCE_THRESHOLD) += threshold.o
 obj-$(CONFIG_X86_MCE_INJECT)	+= mce-inject.o
 
diff --git a/arch/x86/kernel/cpu/mcheck/k7.c b/arch/x86/kernel/cpu/mcheck/k7.c
deleted file mode 100644
index b945d5dbc60..00000000000
--- a/arch/x86/kernel/cpu/mcheck/k7.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * Athlon specific Machine Check Exception Reporting
- * (C) Copyright 2002 Dave Jones <davej@redhat.com>
- */
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-
-/* Machine Check Handler For AMD Athlon/Duron: */
-static void k7_machine_check(struct pt_regs *regs, long error_code)
-{
-	u32 alow, ahigh, high, low;
-	u32 mcgstl, mcgsth;
-	int recover = 1;
-	int i;
-
-	rdmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-	if (mcgstl & (1<<0))	/* Recoverable ? */
-		recover = 0;
-
-	printk(KERN_EMERG "CPU %d: Machine Check Exception: %08x%08x\n",
-		smp_processor_id(), mcgsth, mcgstl);
-
-	for (i = 1; i < nr_mce_banks; i++) {
-		rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high);
-		if (high & (1<<31)) {
-			char misc[20];
-			char addr[24];
-
-			misc[0] = '\0';
-			addr[0] = '\0';
-
-			if (high & (1<<29))
-				recover |= 1;
-			if (high & (1<<25))
-				recover |= 2;
-			high &= ~(1<<31);
-
-			if (high & (1<<27)) {
-				rdmsr(MSR_IA32_MC0_MISC+i*4, alow, ahigh);
-				snprintf(misc, 20, "[%08x%08x]", ahigh, alow);
-			}
-			if (high & (1<<26)) {
-				rdmsr(MSR_IA32_MC0_ADDR+i*4, alow, ahigh);
-				snprintf(addr, 24, " at %08x%08x", ahigh, alow);
-			}
-
-			printk(KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n",
-				smp_processor_id(), i, high, low, misc, addr);
-
-			/* Clear it: */
-			wrmsr(MSR_IA32_MC0_STATUS+i*4, 0UL, 0UL);
-			/* Serialize: */
-			wmb();
-			add_taint(TAINT_MACHINE_CHECK);
-		}
-	}
-
-	if (recover & 2)
-		panic("CPU context corrupt");
-	if (recover & 1)
-		panic("Unable to continue");
-
-	printk(KERN_EMERG "Attempting to continue.\n");
-
-	mcgstl &= ~(1<<2);
-	wrmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-}
-
-
-/* AMD K7 machine check is Intel like: */
-void amd_mcheck_init(struct cpuinfo_x86 *c)
-{
-	u32 l, h;
-	int i;
-
-	if (!cpu_has(c, X86_FEATURE_MCE))
-		return;
-
-	machine_check_vector = k7_machine_check;
-	/* Make sure the vector pointer is visible before we enable MCEs: */
-	wmb();
-
-	printk(KERN_INFO "Intel machine check architecture supported.\n");
-
-	rdmsr(MSR_IA32_MCG_CAP, l, h);
-	if (l & (1<<8))	/* Control register present ? */
-		wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
-	nr_mce_banks = l & 0xff;
-
-	/*
-	 * Clear status for MC index 0 separately, we don't touch CTL,
-	 * as some K7 Athlons cause spurious MCEs when its enabled:
-	 */
-	if (boot_cpu_data.x86 == 6) {
-		wrmsr(MSR_IA32_MC0_STATUS, 0x0, 0x0);
-		i = 1;
-	} else
-		i = 0;
-
-	for (; i < nr_mce_banks; i++) {
-		wrmsr(MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
-		wrmsr(MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0);
-	}
-
-	set_in_cr4(X86_CR4_MCE);
-	printk(KERN_INFO "Intel machine check reporting enabled on CPU#%d.\n",
-		smp_processor_id());
-}
diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c
index a3a235a53f0..472763d9209 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-inject.c
+++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c
@@ -18,7 +18,12 @@
 #include <linux/string.h>
 #include <linux/fs.h>
 #include <linux/smp.h>
+#include <linux/notifier.h>
+#include <linux/kdebug.h>
+#include <linux/cpu.h>
+#include <linux/sched.h>
 #include <asm/mce.h>
+#include <asm/apic.h>
 
 /* Update fake mce registers on current CPU. */
 static void inject_mce(struct mce *m)
@@ -39,44 +44,142 @@ static void inject_mce(struct mce *m)
 	i->finished = 1;
 }
 
-struct delayed_mce {
-	struct timer_list timer;
-	struct mce m;
-};
+static void raise_poll(struct mce *m)
+{
+	unsigned long flags;
+	mce_banks_t b;
 
-/* Inject mce on current CPU */
-static void raise_mce(unsigned long data)
+	memset(&b, 0xff, sizeof(mce_banks_t));
+	local_irq_save(flags);
+	machine_check_poll(0, &b);
+	local_irq_restore(flags);
+	m->finished = 0;
+}
+
+static void raise_exception(struct mce *m, struct pt_regs *pregs)
 {
-	struct delayed_mce *dm = (struct delayed_mce *)data;
-	struct mce *m = &dm->m;
-	int cpu = m->extcpu;
+	struct pt_regs regs;
+	unsigned long flags;
 
-	inject_mce(m);
-	if (m->status & MCI_STATUS_UC) {
-		struct pt_regs regs;
+	if (!pregs) {
 		memset(&regs, 0, sizeof(struct pt_regs));
 		regs.ip = m->ip;
 		regs.cs = m->cs;
+		pregs = &regs;
+	}
+	/* in mcheck exeception handler, irq will be disabled */
+	local_irq_save(flags);
+	do_machine_check(pregs, 0);
+	local_irq_restore(flags);
+	m->finished = 0;
+}
+
+static cpumask_t mce_inject_cpumask;
+
+static int mce_raise_notify(struct notifier_block *self,
+			    unsigned long val, void *data)
+{
+	struct die_args *args = (struct die_args *)data;
+	int cpu = smp_processor_id();
+	struct mce *m = &__get_cpu_var(injectm);
+	if (val != DIE_NMI_IPI || !cpu_isset(cpu, mce_inject_cpumask))
+		return NOTIFY_DONE;
+	cpu_clear(cpu, mce_inject_cpumask);
+	if (m->inject_flags & MCJ_EXCEPTION)
+		raise_exception(m, args->regs);
+	else if (m->status)
+		raise_poll(m);
+	return NOTIFY_STOP;
+}
+
+static struct notifier_block mce_raise_nb = {
+	.notifier_call = mce_raise_notify,
+	.priority = 1000,
+};
+
+/* Inject mce on current CPU */
+static int raise_local(void)
+{
+	struct mce *m = &__get_cpu_var(injectm);
+	int context = MCJ_CTX(m->inject_flags);
+	int ret = 0;
+	int cpu = m->extcpu;
+
+	if (m->inject_flags & MCJ_EXCEPTION) {
 		printk(KERN_INFO "Triggering MCE exception on CPU %d\n", cpu);
-		do_machine_check(&regs, 0);
+		switch (context) {
+		case MCJ_CTX_IRQ:
+			/*
+			 * Could do more to fake interrupts like
+			 * calling irq_enter, but the necessary
+			 * machinery isn't exported currently.
+			 */
+			/*FALL THROUGH*/
+		case MCJ_CTX_PROCESS:
+			raise_exception(m, NULL);
+			break;
+		default:
+			printk(KERN_INFO "Invalid MCE context\n");
+			ret = -EINVAL;
+		}
 		printk(KERN_INFO "MCE exception done on CPU %d\n", cpu);
-	} else {
-		mce_banks_t b;
-		memset(&b, 0xff, sizeof(mce_banks_t));
+	} else if (m->status) {
 		printk(KERN_INFO "Starting machine check poll CPU %d\n", cpu);
-		machine_check_poll(0, &b);
+		raise_poll(m);
 		mce_notify_irq();
-		printk(KERN_INFO "Finished machine check poll on CPU %d\n",
-		       cpu);
-	}
-	kfree(dm);
+		printk(KERN_INFO "Machine check poll done on CPU %d\n", cpu);
+	} else
+		m->finished = 0;
+
+	return ret;
+}
+
+static void raise_mce(struct mce *m)
+{
+	int context = MCJ_CTX(m->inject_flags);
+
+	inject_mce(m);
+
+	if (context == MCJ_CTX_RANDOM)
+		return;
+
+#ifdef CONFIG_X86_LOCAL_APIC
+	if (m->inject_flags & MCJ_NMI_BROADCAST) {
+		unsigned long start;
+		int cpu;
+		get_online_cpus();
+		mce_inject_cpumask = cpu_online_map;
+		cpu_clear(get_cpu(), mce_inject_cpumask);
+		for_each_online_cpu(cpu) {
+			struct mce *mcpu = &per_cpu(injectm, cpu);
+			if (!mcpu->finished ||
+			    MCJ_CTX(mcpu->inject_flags) != MCJ_CTX_RANDOM)
+				cpu_clear(cpu, mce_inject_cpumask);
+		}
+		if (!cpus_empty(mce_inject_cpumask))
+			apic->send_IPI_mask(&mce_inject_cpumask, NMI_VECTOR);
+		start = jiffies;
+		while (!cpus_empty(mce_inject_cpumask)) {
+			if (!time_before(jiffies, start + 2*HZ)) {
+				printk(KERN_ERR
+				"Timeout waiting for mce inject NMI %lx\n",
+					*cpus_addr(mce_inject_cpumask));
+				break;
+			}
+			cpu_relax();
+		}
+		raise_local();
+		put_cpu();
+		put_online_cpus();
+	} else
+#endif
+		raise_local();
 }
 
 /* Error injection interface */
 static ssize_t mce_write(struct file *filp, const char __user *ubuf,
 			 size_t usize, loff_t *off)
 {
-	struct delayed_mce *dm;
 	struct mce m;
 
 	if (!capable(CAP_SYS_ADMIN))
@@ -96,19 +199,12 @@ static ssize_t mce_write(struct file *filp, const char __user *ubuf,
 	if (m.extcpu >= num_possible_cpus() || !cpu_online(m.extcpu))
 		return -EINVAL;
 
-	dm = kmalloc(sizeof(struct delayed_mce), GFP_KERNEL);
-	if (!dm)
-		return -ENOMEM;
-
 	/*
 	 * Need to give user space some time to set everything up,
 	 * so do it a jiffie or two later everywhere.
-	 * Should we use a hrtimer here for better synchronization?
 	 */
-	memcpy(&dm->m, &m, sizeof(struct mce));
-	setup_timer(&dm->timer, raise_mce, (unsigned long)dm);
-	dm->timer.expires = jiffies + 2;
-	add_timer_on(&dm->timer, m.extcpu);
+	schedule_timeout(2);
+	raise_mce(&m);
 	return usize;
 }
 
@@ -116,6 +212,7 @@ static int inject_init(void)
 {
 	printk(KERN_INFO "Machine check injector initialized\n");
 	mce_chrdev_ops.write = mce_write;
+	register_die_notifier(&mce_raise_nb);
 	return 0;
 }
 
diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h
index 54dcb8ff12e..32996f9fab6 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-internal.h
+++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h
@@ -1,3 +1,4 @@
+#include <linux/sysdev.h>
 #include <asm/mce.h>
 
 enum severity_level {
@@ -10,6 +11,20 @@ enum severity_level {
 	MCE_PANIC_SEVERITY,
 };
 
+#define ATTR_LEN		16
+
+/* One object for each MCE bank, shared by all CPUs */
+struct mce_bank {
+	u64			ctl;			/* subevents to enable */
+	unsigned char init;				/* initialise bank? */
+	struct sysdev_attribute attr;			/* sysdev attribute */
+	char			attrname[ATTR_LEN];	/* attribute name */
+};
+
 int mce_severity(struct mce *a, int tolerant, char **msg);
+struct dentry *mce_get_debugfs_dir(void);
 
 extern int mce_ser;
+
+extern struct mce_bank *mce_banks;
+
diff --git a/arch/x86/kernel/cpu/mcheck/mce-severity.c b/arch/x86/kernel/cpu/mcheck/mce-severity.c
index ff0807f9705..8a85dd1b1aa 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-severity.c
+++ b/arch/x86/kernel/cpu/mcheck/mce-severity.c
@@ -139,6 +139,7 @@ int mce_severity(struct mce *a, int tolerant, char **msg)
 	}
 }
 
+#ifdef CONFIG_DEBUG_FS
 static void *s_start(struct seq_file *f, loff_t *pos)
 {
 	if (*pos >= ARRAY_SIZE(severities))
@@ -197,7 +198,7 @@ static int __init severities_debugfs_init(void)
 {
 	struct dentry *dmce = NULL, *fseverities_coverage = NULL;
 
-	dmce = debugfs_create_dir("mce", NULL);
+	dmce = mce_get_debugfs_dir();
 	if (dmce == NULL)
 		goto err_out;
 	fseverities_coverage = debugfs_create_file("severities-coverage",
@@ -209,10 +210,7 @@ static int __init severities_debugfs_init(void)
 	return 0;
 
 err_out:
-	if (fseverities_coverage)
-		debugfs_remove(fseverities_coverage);
-	if (dmce)
-		debugfs_remove(dmce);
 	return -ENOMEM;
 }
 late_initcall(severities_debugfs_init);
+#endif
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 01213048f62..183c3457d2f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -34,6 +34,7 @@
 #include <linux/smp.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
+#include <linux/debugfs.h>
 
 #include <asm/processor.h>
 #include <asm/hw_irq.h>
@@ -45,21 +46,8 @@
 
 #include "mce-internal.h"
 
-/* Handle unconfigured int18 (should never happen) */
-static void unexpected_machine_check(struct pt_regs *regs, long error_code)
-{
-	printk(KERN_ERR "CPU#%d: Unexpected int18 (Machine Check).\n",
-	       smp_processor_id());
-}
-
-/* Call the installed machine check handler for this CPU setup. */
-void (*machine_check_vector)(struct pt_regs *, long error_code) =
-						unexpected_machine_check;
-
 int mce_disabled __read_mostly;
 
-#ifdef CONFIG_X86_NEW_MCE
-
 #define MISC_MCELOG_MINOR	227
 
 #define SPINUNIT 100	/* 100ns */
@@ -77,7 +65,6 @@ DEFINE_PER_CPU(unsigned, mce_exception_count);
  */
 static int			tolerant		__read_mostly = 1;
 static int			banks			__read_mostly;
-static u64			*bank			__read_mostly;
 static int			rip_msr			__read_mostly;
 static int			mce_bootlog		__read_mostly = -1;
 static int			monarch_timeout		__read_mostly = -1;
@@ -87,13 +74,13 @@ int				mce_cmci_disabled	__read_mostly;
 int				mce_ignore_ce		__read_mostly;
 int				mce_ser			__read_mostly;
 
+struct mce_bank                *mce_banks		__read_mostly;
+
 /* User mode helper program triggered by machine check event */
 static unsigned long		mce_need_notify;
 static char			mce_helper[128];
 static char			*mce_helper_argv[2] = { mce_helper, NULL };
 
-static unsigned long		dont_init_banks;
-
 static DECLARE_WAIT_QUEUE_HEAD(mce_wait);
 static DEFINE_PER_CPU(struct mce, mces_seen);
 static int			cpu_missing;
@@ -104,11 +91,6 @@ DEFINE_PER_CPU(mce_banks_t, mce_poll_banks) = {
 	[0 ... BITS_TO_LONGS(MAX_NR_BANKS)-1] = ~0UL
 };
 
-static inline int skip_bank_init(int i)
-{
-	return i < BITS_PER_LONG && test_bit(i, &dont_init_banks);
-}
-
 static DEFINE_PER_CPU(struct work_struct, mce_work);
 
 /* Do initial initialization of a struct mce */
@@ -183,6 +165,11 @@ void mce_log(struct mce *mce)
 	set_bit(0, &mce_need_notify);
 }
 
+void __weak decode_mce(struct mce *m)
+{
+	return;
+}
+
 static void print_mce(struct mce *m)
 {
 	printk(KERN_EMERG
@@ -205,6 +192,8 @@ static void print_mce(struct mce *m)
 	printk(KERN_EMERG "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
 			m->cpuvendor, m->cpuid, m->time, m->socketid,
 			m->apicid);
+
+	decode_mce(m);
 }
 
 static void print_mce_head(void)
@@ -222,6 +211,9 @@ static void print_mce_tail(void)
 
 static atomic_t mce_paniced;
 
+static int fake_panic;
+static atomic_t mce_fake_paniced;
+
 /* Panic in progress. Enable interrupts and wait for final IPI */
 static void wait_for_panic(void)
 {
@@ -239,15 +231,21 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 {
 	int i;
 
-	/*
-	 * Make sure only one CPU runs in machine check panic
-	 */
-	if (atomic_add_return(1, &mce_paniced) > 1)
-		wait_for_panic();
-	barrier();
+	if (!fake_panic) {
+		/*
+		 * Make sure only one CPU runs in machine check panic
+		 */
+		if (atomic_inc_return(&mce_paniced) > 1)
+			wait_for_panic();
+		barrier();
 
-	bust_spinlocks(1);
-	console_verbose();
+		bust_spinlocks(1);
+		console_verbose();
+	} else {
+		/* Don't log too much for fake panic */
+		if (atomic_inc_return(&mce_fake_paniced) > 1)
+			return;
+	}
 	print_mce_head();
 	/* First print corrected ones that are still unlogged */
 	for (i = 0; i < MCE_LOG_LEN; i++) {
@@ -274,9 +272,12 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 	print_mce_tail();
 	if (exp)
 		printk(KERN_EMERG "Machine check: %s\n", exp);
-	if (panic_timeout == 0)
-		panic_timeout = mce_panic_timeout;
-	panic(msg);
+	if (!fake_panic) {
+		if (panic_timeout == 0)
+			panic_timeout = mce_panic_timeout;
+		panic(msg);
+	} else
+		printk(KERN_EMERG "Fake kernel panic: %s\n", msg);
 }
 
 /* Support code for software error injection */
@@ -286,11 +287,11 @@ static int msr_to_offset(u32 msr)
 	unsigned bank = __get_cpu_var(injectm.bank);
 	if (msr == rip_msr)
 		return offsetof(struct mce, ip);
-	if (msr == MSR_IA32_MC0_STATUS + bank*4)
+	if (msr == MSR_IA32_MCx_STATUS(bank))
 		return offsetof(struct mce, status);
-	if (msr == MSR_IA32_MC0_ADDR + bank*4)
+	if (msr == MSR_IA32_MCx_ADDR(bank))
 		return offsetof(struct mce, addr);
-	if (msr == MSR_IA32_MC0_MISC + bank*4)
+	if (msr == MSR_IA32_MCx_MISC(bank))
 		return offsetof(struct mce, misc);
 	if (msr == MSR_IA32_MCG_STATUS)
 		return offsetof(struct mce, mcgstatus);
@@ -301,13 +302,25 @@ static int msr_to_offset(u32 msr)
 static u64 mce_rdmsrl(u32 msr)
 {
 	u64 v;
+
 	if (__get_cpu_var(injectm).finished) {
 		int offset = msr_to_offset(msr);
+
 		if (offset < 0)
 			return 0;
 		return *(u64 *)((char *)&__get_cpu_var(injectm) + offset);
 	}
-	rdmsrl(msr, v);
+
+	if (rdmsrl_safe(msr, &v)) {
+		WARN_ONCE(1, "mce: Unable to read msr %d!\n", msr);
+		/*
+		 * Return zero in case the access faulted. This should
+		 * not happen normally but can happen if the CPU does
+		 * something weird, or if the code is buggy.
+		 */
+		v = 0;
+	}
+
 	return v;
 }
 
@@ -315,6 +328,7 @@ static void mce_wrmsrl(u32 msr, u64 v)
 {
 	if (__get_cpu_var(injectm).finished) {
 		int offset = msr_to_offset(msr);
+
 		if (offset >= 0)
 			*(u64 *)((char *)&__get_cpu_var(injectm) + offset) = v;
 		return;
@@ -411,7 +425,7 @@ static inline void mce_get_rip(struct mce *m, struct pt_regs *regs)
 		m->ip = mce_rdmsrl(rip_msr);
 }
 
-#ifdef CONFIG_X86_LOCAL_APIC 
+#ifdef CONFIG_X86_LOCAL_APIC
 /*
  * Called after interrupts have been reenabled again
  * when a MCE happened during an interrupts off region
@@ -495,7 +509,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
 
 	m.mcgstatus = mce_rdmsrl(MSR_IA32_MCG_STATUS);
 	for (i = 0; i < banks; i++) {
-		if (!bank[i] || !test_bit(i, *b))
+		if (!mce_banks[i].ctl || !test_bit(i, *b))
 			continue;
 
 		m.misc = 0;
@@ -504,7 +518,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
 		m.tsc = 0;
 
 		barrier();
-		m.status = mce_rdmsrl(MSR_IA32_MC0_STATUS + i*4);
+		m.status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
 		if (!(m.status & MCI_STATUS_VAL))
 			continue;
 
@@ -519,9 +533,9 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
 			continue;
 
 		if (m.status & MCI_STATUS_MISCV)
-			m.misc = mce_rdmsrl(MSR_IA32_MC0_MISC + i*4);
+			m.misc = mce_rdmsrl(MSR_IA32_MCx_MISC(i));
 		if (m.status & MCI_STATUS_ADDRV)
-			m.addr = mce_rdmsrl(MSR_IA32_MC0_ADDR + i*4);
+			m.addr = mce_rdmsrl(MSR_IA32_MCx_ADDR(i));
 
 		if (!(flags & MCP_TIMESTAMP))
 			m.tsc = 0;
@@ -537,7 +551,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
 		/*
 		 * Clear state for this bank.
 		 */
-		mce_wrmsrl(MSR_IA32_MC0_STATUS+4*i, 0);
+		mce_wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
 	}
 
 	/*
@@ -558,7 +572,7 @@ static int mce_no_way_out(struct mce *m, char **msg)
 	int i;
 
 	for (i = 0; i < banks; i++) {
-		m->status = mce_rdmsrl(MSR_IA32_MC0_STATUS + i*4);
+		m->status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
 		if (mce_severity(m, tolerant, msg) >= MCE_PANIC_SEVERITY)
 			return 1;
 	}
@@ -618,7 +632,7 @@ out:
  * This way we prevent any potential data corruption in a unrecoverable case
  * and also makes sure always all CPU's errors are examined.
  *
- * Also this detects the case of an machine check event coming from outer
+ * Also this detects the case of a machine check event coming from outer
  * space (not detected by any CPUs) In this case some external agent wants
  * us to shut down, so panic too.
  *
@@ -671,7 +685,7 @@ static void mce_reign(void)
 	 * No machine check event found. Must be some external
 	 * source or one CPU is hung. Panic.
 	 */
-	if (!m && tolerant < 3)
+	if (global_worst <= MCE_KEEP_SEVERITY && tolerant < 3)
 		mce_panic("Machine check from unknown source", NULL, NULL);
 
 	/*
@@ -705,7 +719,7 @@ static int mce_start(int *no_way_out)
 	 * global_nwo should be updated before mce_callin
 	 */
 	smp_wmb();
-	order = atomic_add_return(1, &mce_callin);
+	order = atomic_inc_return(&mce_callin);
 
 	/*
 	 * Wait for everyone.
@@ -842,7 +856,7 @@ static void mce_clear_state(unsigned long *toclear)
 
 	for (i = 0; i < banks; i++) {
 		if (test_bit(i, toclear))
-			mce_wrmsrl(MSR_IA32_MC0_STATUS+4*i, 0);
+			mce_wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
 	}
 }
 
@@ -895,11 +909,11 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 	mce_setup(&m);
 
 	m.mcgstatus = mce_rdmsrl(MSR_IA32_MCG_STATUS);
-	no_way_out = mce_no_way_out(&m, &msg);
-
 	final = &__get_cpu_var(mces_seen);
 	*final = m;
 
+	no_way_out = mce_no_way_out(&m, &msg);
+
 	barrier();
 
 	/*
@@ -916,14 +930,14 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 	order = mce_start(&no_way_out);
 	for (i = 0; i < banks; i++) {
 		__clear_bit(i, toclear);
-		if (!bank[i])
+		if (!mce_banks[i].ctl)
 			continue;
 
 		m.misc = 0;
 		m.addr = 0;
 		m.bank = i;
 
-		m.status = mce_rdmsrl(MSR_IA32_MC0_STATUS + i*4);
+		m.status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
 		if ((m.status & MCI_STATUS_VAL) == 0)
 			continue;
 
@@ -964,9 +978,9 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 			kill_it = 1;
 
 		if (m.status & MCI_STATUS_MISCV)
-			m.misc = mce_rdmsrl(MSR_IA32_MC0_MISC + i*4);
+			m.misc = mce_rdmsrl(MSR_IA32_MCx_MISC(i));
 		if (m.status & MCI_STATUS_ADDRV)
-			m.addr = mce_rdmsrl(MSR_IA32_MC0_ADDR + i*4);
+			m.addr = mce_rdmsrl(MSR_IA32_MCx_ADDR(i));
 
 		/*
 		 * Action optional error. Queue address for later processing.
@@ -1091,7 +1105,7 @@ void mce_log_therm_throt_event(__u64 status)
  */
 static int check_interval = 5 * 60; /* 5 minutes */
 
-static DEFINE_PER_CPU(int, next_interval); /* in jiffies */
+static DEFINE_PER_CPU(int, mce_next_interval); /* in jiffies */
 static DEFINE_PER_CPU(struct timer_list, mce_timer);
 
 static void mcheck_timer(unsigned long data)
@@ -1110,7 +1124,7 @@ static void mcheck_timer(unsigned long data)
 	 * Alert userspace if needed.  If we logged an MCE, reduce the
 	 * polling interval, otherwise increase the polling interval.
 	 */
-	n = &__get_cpu_var(next_interval);
+	n = &__get_cpu_var(mce_next_interval);
 	if (mce_notify_irq())
 		*n = max(*n/2, HZ/100);
 	else
@@ -1159,10 +1173,26 @@ int mce_notify_irq(void)
 }
 EXPORT_SYMBOL_GPL(mce_notify_irq);
 
+static int mce_banks_init(void)
+{
+	int i;
+
+	mce_banks = kzalloc(banks * sizeof(struct mce_bank), GFP_KERNEL);
+	if (!mce_banks)
+		return -ENOMEM;
+	for (i = 0; i < banks; i++) {
+		struct mce_bank *b = &mce_banks[i];
+
+		b->ctl = -1ULL;
+		b->init = 1;
+	}
+	return 0;
+}
+
 /*
  * Initialize Machine Checks for a CPU.
  */
-static int mce_cap_init(void)
+static int __cpuinit mce_cap_init(void)
 {
 	unsigned b;
 	u64 cap;
@@ -1182,11 +1212,11 @@ static int mce_cap_init(void)
 	/* Don't support asymmetric configurations today */
 	WARN_ON(banks != 0 && b != banks);
 	banks = b;
-	if (!bank) {
-		bank = kmalloc(banks * sizeof(u64), GFP_KERNEL);
-		if (!bank)
-			return -ENOMEM;
-		memset(bank, 0xff, banks * sizeof(u64));
+	if (!mce_banks) {
+		int err = mce_banks_init();
+
+		if (err)
+			return err;
 	}
 
 	/* Use accurate RIP reporting if available. */
@@ -1218,15 +1248,17 @@ static void mce_init(void)
 		wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
 
 	for (i = 0; i < banks; i++) {
-		if (skip_bank_init(i))
+		struct mce_bank *b = &mce_banks[i];
+
+		if (!b->init)
 			continue;
-		wrmsrl(MSR_IA32_MC0_CTL+4*i, bank[i]);
-		wrmsrl(MSR_IA32_MC0_STATUS+4*i, 0);
+		wrmsrl(MSR_IA32_MCx_CTL(i), b->ctl);
+		wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
 	}
 }
 
 /* Add per CPU specific workarounds here */
-static int mce_cpu_quirks(struct cpuinfo_x86 *c)
+static int __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
 {
 	if (c->x86_vendor == X86_VENDOR_UNKNOWN) {
 		pr_info("MCE: unknown CPU type - not enabling MCE support.\n");
@@ -1241,7 +1273,7 @@ static int mce_cpu_quirks(struct cpuinfo_x86 *c)
 			 * trips off incorrectly with the IOMMU & 3ware
 			 * & Cerberus:
 			 */
-			clear_bit(10, (unsigned long *)&bank[4]);
+			clear_bit(10, (unsigned long *)&mce_banks[4].ctl);
 		}
 		if (c->x86 <= 17 && mce_bootlog < 0) {
 			/*
@@ -1255,7 +1287,7 @@ static int mce_cpu_quirks(struct cpuinfo_x86 *c)
 		 * by default.
 		 */
 		 if (c->x86 == 6 && banks > 0)
-			bank[0] = 0;
+			mce_banks[0].ctl = 0;
 	}
 
 	if (c->x86_vendor == X86_VENDOR_INTEL) {
@@ -1268,8 +1300,8 @@ static int mce_cpu_quirks(struct cpuinfo_x86 *c)
 		 * valid event later, merely don't write CTL0.
 		 */
 
-		if (c->x86 == 6 && c->x86_model < 0x1A)
-			__set_bit(0, &dont_init_banks);
+		if (c->x86 == 6 && c->x86_model < 0x1A && banks > 0)
+			mce_banks[0].init = 0;
 
 		/*
 		 * All newer Intel systems support MCE broadcasting. Enable
@@ -1325,7 +1357,7 @@ static void mce_cpu_features(struct cpuinfo_x86 *c)
 static void mce_init_timer(void)
 {
 	struct timer_list *t = &__get_cpu_var(mce_timer);
-	int *n = &__get_cpu_var(next_interval);
+	int *n = &__get_cpu_var(mce_next_interval);
 
 	if (mce_ignore_ce)
 		return;
@@ -1338,6 +1370,17 @@ static void mce_init_timer(void)
 	add_timer_on(t, smp_processor_id());
 }
 
+/* Handle unconfigured int18 (should never happen) */
+static void unexpected_machine_check(struct pt_regs *regs, long error_code)
+{
+	printk(KERN_ERR "CPU#%d: Unexpected int18 (Machine Check).\n",
+	       smp_processor_id());
+}
+
+/* Call the installed machine check handler for this CPU setup. */
+void (*machine_check_vector)(struct pt_regs *, long error_code) =
+						unexpected_machine_check;
+
 /*
  * Called for each booted CPU to set up machine checks.
  * Must be called with preempt off:
@@ -1551,8 +1594,10 @@ static struct miscdevice mce_log_device = {
  */
 static int __init mcheck_enable(char *str)
 {
-	if (*str == 0)
+	if (*str == 0) {
 		enable_p5_mce();
+		return 1;
+	}
 	if (*str == '=')
 		str++;
 	if (!strcmp(str, "off"))
@@ -1593,8 +1638,10 @@ static int mce_disable(void)
 	int i;
 
 	for (i = 0; i < banks; i++) {
-		if (!skip_bank_init(i))
-			wrmsrl(MSR_IA32_MC0_CTL + i*4, 0);
+		struct mce_bank *b = &mce_banks[i];
+
+		if (b->init)
+			wrmsrl(MSR_IA32_MCx_CTL(i), 0);
 	}
 	return 0;
 }
@@ -1669,14 +1716,15 @@ DEFINE_PER_CPU(struct sys_device, mce_dev);
 __cpuinitdata
 void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu);
 
-static struct sysdev_attribute *bank_attrs;
+static inline struct mce_bank *attr_to_bank(struct sysdev_attribute *attr)
+{
+	return container_of(attr, struct mce_bank, attr);
+}
 
 static ssize_t show_bank(struct sys_device *s, struct sysdev_attribute *attr,
 			 char *buf)
 {
-	u64 b = bank[attr - bank_attrs];
-
-	return sprintf(buf, "%llx\n", b);
+	return sprintf(buf, "%llx\n", attr_to_bank(attr)->ctl);
 }
 
 static ssize_t set_bank(struct sys_device *s, struct sysdev_attribute *attr,
@@ -1687,7 +1735,7 @@ static ssize_t set_bank(struct sys_device *s, struct sysdev_attribute *attr,
 	if (strict_strtoull(buf, 0, &new) < 0)
 		return -EINVAL;
 
-	bank[attr - bank_attrs] = new;
+	attr_to_bank(attr)->ctl = new;
 	mce_restart();
 
 	return size;
@@ -1829,7 +1877,7 @@ static __cpuinit int mce_create_device(unsigned int cpu)
 	}
 	for (j = 0; j < banks; j++) {
 		err = sysdev_create_file(&per_cpu(mce_dev, cpu),
-					&bank_attrs[j]);
+					&mce_banks[j].attr);
 		if (err)
 			goto error2;
 	}
@@ -1838,10 +1886,10 @@ static __cpuinit int mce_create_device(unsigned int cpu)
 	return 0;
 error2:
 	while (--j >= 0)
-		sysdev_remove_file(&per_cpu(mce_dev, cpu), &bank_attrs[j]);
+		sysdev_remove_file(&per_cpu(mce_dev, cpu), &mce_banks[j].attr);
 error:
 	while (--i >= 0)
-		sysdev_remove_file(&per_cpu(mce_dev, cpu), mce_attrs[i]);
+		sysdev_remove_file(&per_cpu(mce_dev, cpu), &mce_banks[i].attr);
 
 	sysdev_unregister(&per_cpu(mce_dev, cpu));
 
@@ -1859,7 +1907,7 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
 		sysdev_remove_file(&per_cpu(mce_dev, cpu), mce_attrs[i]);
 
 	for (i = 0; i < banks; i++)
-		sysdev_remove_file(&per_cpu(mce_dev, cpu), &bank_attrs[i]);
+		sysdev_remove_file(&per_cpu(mce_dev, cpu), &mce_banks[i].attr);
 
 	sysdev_unregister(&per_cpu(mce_dev, cpu));
 	cpumask_clear_cpu(cpu, mce_dev_initialized);
@@ -1876,8 +1924,10 @@ static void mce_disable_cpu(void *h)
 	if (!(action & CPU_TASKS_FROZEN))
 		cmci_clear();
 	for (i = 0; i < banks; i++) {
-		if (!skip_bank_init(i))
-			wrmsrl(MSR_IA32_MC0_CTL + i*4, 0);
+		struct mce_bank *b = &mce_banks[i];
+
+		if (b->init)
+			wrmsrl(MSR_IA32_MCx_CTL(i), 0);
 	}
 }
 
@@ -1892,8 +1942,10 @@ static void mce_reenable_cpu(void *h)
 	if (!(action & CPU_TASKS_FROZEN))
 		cmci_reenable();
 	for (i = 0; i < banks; i++) {
-		if (!skip_bank_init(i))
-			wrmsrl(MSR_IA32_MC0_CTL + i*4, bank[i]);
+		struct mce_bank *b = &mce_banks[i];
+
+		if (b->init)
+			wrmsrl(MSR_IA32_MCx_CTL(i), b->ctl);
 	}
 }
 
@@ -1925,7 +1977,7 @@ mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	case CPU_DOWN_FAILED:
 	case CPU_DOWN_FAILED_FROZEN:
 		t->expires = round_jiffies(jiffies +
-						__get_cpu_var(next_interval));
+					   __get_cpu_var(mce_next_interval));
 		add_timer_on(t, cpu);
 		smp_call_function_single(cpu, mce_reenable_cpu, &action, 1);
 		break;
@@ -1941,35 +1993,21 @@ static struct notifier_block mce_cpu_notifier __cpuinitdata = {
 	.notifier_call = mce_cpu_callback,
 };
 
-static __init int mce_init_banks(void)
+static __init void mce_init_banks(void)
 {
 	int i;
 
-	bank_attrs = kzalloc(sizeof(struct sysdev_attribute) * banks,
-				GFP_KERNEL);
-	if (!bank_attrs)
-		return -ENOMEM;
-
 	for (i = 0; i < banks; i++) {
-		struct sysdev_attribute *a = &bank_attrs[i];
+		struct mce_bank *b = &mce_banks[i];
+		struct sysdev_attribute *a = &b->attr;
 
-		a->attr.name	= kasprintf(GFP_KERNEL, "bank%d", i);
-		if (!a->attr.name)
-			goto nomem;
+		a->attr.name	= b->attrname;
+		snprintf(b->attrname, ATTR_LEN, "bank%d", i);
 
 		a->attr.mode	= 0644;
 		a->show		= show_bank;
 		a->store	= set_bank;
 	}
-	return 0;
-
-nomem:
-	while (--i >= 0)
-		kfree(bank_attrs[i].attr.name);
-	kfree(bank_attrs);
-	bank_attrs = NULL;
-
-	return -ENOMEM;
 }
 
 static __init int mce_init_device(void)
@@ -1982,9 +2020,7 @@ static __init int mce_init_device(void)
 
 	zalloc_cpumask_var(&mce_dev_initialized, GFP_KERNEL);
 
-	err = mce_init_banks();
-	if (err)
-		return err;
+	mce_init_banks();
 
 	err = sysdev_class_register(&mce_sysclass);
 	if (err)
@@ -2004,57 +2040,65 @@ static __init int mce_init_device(void)
 
 device_initcall(mce_init_device);
 
-#else /* CONFIG_X86_OLD_MCE: */
-
-int nr_mce_banks;
-EXPORT_SYMBOL_GPL(nr_mce_banks);	/* non-fatal.o */
+/*
+ * Old style boot options parsing. Only for compatibility.
+ */
+static int __init mcheck_disable(char *str)
+{
+	mce_disabled = 1;
+	return 1;
+}
+__setup("nomce", mcheck_disable);
 
-/* This has to be run for each processor */
-void mcheck_init(struct cpuinfo_x86 *c)
+#ifdef CONFIG_DEBUG_FS
+struct dentry *mce_get_debugfs_dir(void)
 {
-	if (mce_disabled)
-		return;
+	static struct dentry *dmce;
 
-	switch (c->x86_vendor) {
-	case X86_VENDOR_AMD:
-		amd_mcheck_init(c);
-		break;
+	if (!dmce)
+		dmce = debugfs_create_dir("mce", NULL);
 
-	case X86_VENDOR_INTEL:
-		if (c->x86 == 5)
-			intel_p5_mcheck_init(c);
-		if (c->x86 == 6)
-			intel_p6_mcheck_init(c);
-		if (c->x86 == 15)
-			intel_p4_mcheck_init(c);
-		break;
+	return dmce;
+}
 
-	case X86_VENDOR_CENTAUR:
-		if (c->x86 == 5)
-			winchip_mcheck_init(c);
-		break;
+static void mce_reset(void)
+{
+	cpu_missing = 0;
+	atomic_set(&mce_fake_paniced, 0);
+	atomic_set(&mce_executing, 0);
+	atomic_set(&mce_callin, 0);
+	atomic_set(&global_nwo, 0);
+}
 
-	default:
-		break;
-	}
-	printk(KERN_INFO "mce: CPU supports %d MCE banks\n", nr_mce_banks);
+static int fake_panic_get(void *data, u64 *val)
+{
+	*val = fake_panic;
+	return 0;
 }
 
-static int __init mcheck_enable(char *str)
+static int fake_panic_set(void *data, u64 val)
 {
-	mce_p5_enabled = 1;
-	return 1;
+	mce_reset();
+	fake_panic = val;
+	return 0;
 }
-__setup("mce", mcheck_enable);
 
-#endif /* CONFIG_X86_OLD_MCE */
+DEFINE_SIMPLE_ATTRIBUTE(fake_panic_fops, fake_panic_get,
+			fake_panic_set, "%llu\n");
 
-/*
- * Old style boot options parsing. Only for compatibility.
- */
-static int __init mcheck_disable(char *str)
+static int __init mce_debugfs_init(void)
 {
-	mce_disabled = 1;
-	return 1;
+	struct dentry *dmce, *ffake_panic;
+
+	dmce = mce_get_debugfs_dir();
+	if (!dmce)
+		return -ENOMEM;
+	ffake_panic = debugfs_create_file("fake_panic", 0444, dmce, NULL,
+					  &fake_panic_fops);
+	if (!ffake_panic)
+		return -ENOMEM;
+
+	return 0;
 }
-__setup("nomce", mcheck_disable);
+late_initcall(mce_debugfs_init);
+#endif
diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index ddae21620bd..83a3d1f4efc 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -69,7 +69,7 @@ struct threshold_bank {
 	struct threshold_block	*blocks;
 	cpumask_var_t		cpus;
 };
-static DEFINE_PER_CPU(struct threshold_bank *, threshold_banks[NR_BANKS]);
+static DEFINE_PER_CPU(struct threshold_bank * [NR_BANKS], threshold_banks);
 
 #ifdef CONFIG_SMP
 static unsigned char shared_bank[NR_BANKS] = {
@@ -489,12 +489,15 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 	int i, err = 0;
 	struct threshold_bank *b = NULL;
 	char name[32];
+#ifdef CONFIG_SMP
+	struct cpuinfo_x86 *c = &cpu_data(cpu);
+#endif
 
 	sprintf(name, "threshold_bank%i", bank);
 
 #ifdef CONFIG_SMP
 	if (cpu_data(cpu).cpu_core_id && shared_bank[bank]) {	/* symlink */
-		i = cpumask_first(cpu_core_mask(cpu));
+		i = cpumask_first(c->llc_shared_map);
 
 		/* first core not up yet */
 		if (cpu_data(i).cpu_core_id)
@@ -514,7 +517,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 		if (err)
 			goto out;
 
-		cpumask_copy(b->cpus, cpu_core_mask(cpu));
+		cpumask_copy(b->cpus, c->llc_shared_map);
 		per_cpu(threshold_banks, cpu)[bank] = b;
 
 		goto out;
@@ -539,7 +542,7 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
 #ifndef CONFIG_SMP
 	cpumask_setall(b->cpus);
 #else
-	cpumask_copy(b->cpus, cpu_core_mask(cpu));
+	cpumask_copy(b->cpus, c->llc_shared_map);
 #endif
 
 	per_cpu(threshold_banks, cpu)[bank] = b;
diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c
index e1acec0f7a3..889f665fe93 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_intel.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c
@@ -90,7 +90,7 @@ static void cmci_discover(int banks, int boot)
 		if (test_bit(i, owned))
 			continue;
 
-		rdmsrl(MSR_IA32_MC0_CTL2 + i, val);
+		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
 
 		/* Already owned by someone else? */
 		if (val & CMCI_EN) {
@@ -101,8 +101,8 @@ static void cmci_discover(int banks, int boot)
 		}
 
 		val |= CMCI_EN | CMCI_THRESHOLD;
-		wrmsrl(MSR_IA32_MC0_CTL2 + i, val);
-		rdmsrl(MSR_IA32_MC0_CTL2 + i, val);
+		wrmsrl(MSR_IA32_MCx_CTL2(i), val);
+		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
 
 		/* Did the enable bit stick? -- the bank supports CMCI */
 		if (val & CMCI_EN) {
@@ -152,9 +152,9 @@ void cmci_clear(void)
 		if (!test_bit(i, __get_cpu_var(mce_banks_owned)))
 			continue;
 		/* Disable CMCI */
-		rdmsrl(MSR_IA32_MC0_CTL2 + i, val);
+		rdmsrl(MSR_IA32_MCx_CTL2(i), val);
 		val &= ~(CMCI_EN|CMCI_THRESHOLD_MASK);
-		wrmsrl(MSR_IA32_MC0_CTL2 + i, val);
+		wrmsrl(MSR_IA32_MCx_CTL2(i), val);
 		__clear_bit(i, __get_cpu_var(mce_banks_owned));
 	}
 	spin_unlock_irqrestore(&cmci_discover_lock, flags);
diff --git a/arch/x86/kernel/cpu/mcheck/non-fatal.c b/arch/x86/kernel/cpu/mcheck/non-fatal.c
deleted file mode 100644
index f5f2d6f71fb..00000000000
--- a/arch/x86/kernel/cpu/mcheck/non-fatal.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Non Fatal Machine Check Exception Reporting
- *
- * (C) Copyright 2002 Dave Jones. <davej@redhat.com>
- *
- * This file contains routines to check for non-fatal MCEs every 15s
- *
- */
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-
-static int		firstbank;
-
-#define MCE_RATE	(15*HZ)	/* timer rate is 15s */
-
-static void mce_checkregs(void *info)
-{
-	u32 low, high;
-	int i;
-
-	for (i = firstbank; i < nr_mce_banks; i++) {
-		rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high);
-
-		if (!(high & (1<<31)))
-			continue;
-
-		printk(KERN_INFO "MCE: The hardware reports a non fatal, "
-			"correctable incident occurred on CPU %d.\n",
-				smp_processor_id());
-
-		printk(KERN_INFO "Bank %d: %08x%08x\n", i, high, low);
-
-		/*
-		 * Scrub the error so we don't pick it up in MCE_RATE
-		 * seconds time:
-		 */
-		wrmsr(MSR_IA32_MC0_STATUS+i*4, 0UL, 0UL);
-
-		/* Serialize: */
-		wmb();
-		add_taint(TAINT_MACHINE_CHECK);
-	}
-}
-
-static void mce_work_fn(struct work_struct *work);
-static DECLARE_DELAYED_WORK(mce_work, mce_work_fn);
-
-static void mce_work_fn(struct work_struct *work)
-{
-	on_each_cpu(mce_checkregs, NULL, 1);
-	schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE));
-}
-
-static int __init init_nonfatal_mce_checker(void)
-{
-	struct cpuinfo_x86 *c = &boot_cpu_data;
-
-	/* Check for MCE support */
-	if (!cpu_has(c, X86_FEATURE_MCE))
-		return -ENODEV;
-
-	/* Check for PPro style MCA */
-	if (!cpu_has(c, X86_FEATURE_MCA))
-		return -ENODEV;
-
-	/* Some Athlons misbehave when we frob bank 0 */
-	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
-						boot_cpu_data.x86 == 6)
-		firstbank = 1;
-	else
-		firstbank = 0;
-
-	/*
-	 * Check for non-fatal errors every MCE_RATE s
-	 */
-	schedule_delayed_work(&mce_work, round_jiffies_relative(MCE_RATE));
-	printk(KERN_INFO "Machine check exception polling timer started.\n");
-
-	return 0;
-}
-module_init(init_nonfatal_mce_checker);
-
-MODULE_LICENSE("GPL");
diff --git a/arch/x86/kernel/cpu/mcheck/p4.c b/arch/x86/kernel/cpu/mcheck/p4.c
deleted file mode 100644
index 4482aea9aa2..00000000000
--- a/arch/x86/kernel/cpu/mcheck/p4.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * P4 specific Machine Check Exception Reporting
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-
-#include <asm/processor.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-
-/* as supported by the P4/Xeon family */
-struct intel_mce_extended_msrs {
-	u32 eax;
-	u32 ebx;
-	u32 ecx;
-	u32 edx;
-	u32 esi;
-	u32 edi;
-	u32 ebp;
-	u32 esp;
-	u32 eflags;
-	u32 eip;
-	/* u32 *reserved[]; */
-};
-
-static int mce_num_extended_msrs;
-
-/* P4/Xeon Extended MCE MSR retrieval, return 0 if unsupported */
-static void intel_get_extended_msrs(struct intel_mce_extended_msrs *r)
-{
-	u32 h;
-
-	rdmsr(MSR_IA32_MCG_EAX, r->eax, h);
-	rdmsr(MSR_IA32_MCG_EBX, r->ebx, h);
-	rdmsr(MSR_IA32_MCG_ECX, r->ecx, h);
-	rdmsr(MSR_IA32_MCG_EDX, r->edx, h);
-	rdmsr(MSR_IA32_MCG_ESI, r->esi, h);
-	rdmsr(MSR_IA32_MCG_EDI, r->edi, h);
-	rdmsr(MSR_IA32_MCG_EBP, r->ebp, h);
-	rdmsr(MSR_IA32_MCG_ESP, r->esp, h);
-	rdmsr(MSR_IA32_MCG_EFLAGS, r->eflags, h);
-	rdmsr(MSR_IA32_MCG_EIP, r->eip, h);
-}
-
-static void intel_machine_check(struct pt_regs *regs, long error_code)
-{
-	u32 alow, ahigh, high, low;
-	u32 mcgstl, mcgsth;
-	int recover = 1;
-	int i;
-
-	rdmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-	if (mcgstl & (1<<0))	/* Recoverable ? */
-		recover = 0;
-
-	printk(KERN_EMERG "CPU %d: Machine Check Exception: %08x%08x\n",
-		smp_processor_id(), mcgsth, mcgstl);
-
-	if (mce_num_extended_msrs > 0) {
-		struct intel_mce_extended_msrs dbg;
-
-		intel_get_extended_msrs(&dbg);
-
-		printk(KERN_DEBUG "CPU %d: EIP: %08x EFLAGS: %08x\n"
-			"\teax: %08x ebx: %08x ecx: %08x edx: %08x\n"
-			"\tesi: %08x edi: %08x ebp: %08x esp: %08x\n",
-			smp_processor_id(), dbg.eip, dbg.eflags,
-			dbg.eax, dbg.ebx, dbg.ecx, dbg.edx,
-			dbg.esi, dbg.edi, dbg.ebp, dbg.esp);
-	}
-
-	for (i = 0; i < nr_mce_banks; i++) {
-		rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high);
-		if (high & (1<<31)) {
-			char misc[20];
-			char addr[24];
-
-			misc[0] = addr[0] = '\0';
-			if (high & (1<<29))
-				recover |= 1;
-			if (high & (1<<25))
-				recover |= 2;
-			high &= ~(1<<31);
-			if (high & (1<<27)) {
-				rdmsr(MSR_IA32_MC0_MISC+i*4, alow, ahigh);
-				snprintf(misc, 20, "[%08x%08x]", ahigh, alow);
-			}
-			if (high & (1<<26)) {
-				rdmsr(MSR_IA32_MC0_ADDR+i*4, alow, ahigh);
-				snprintf(addr, 24, " at %08x%08x", ahigh, alow);
-			}
-			printk(KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n",
-				smp_processor_id(), i, high, low, misc, addr);
-		}
-	}
-
-	if (recover & 2)
-		panic("CPU context corrupt");
-	if (recover & 1)
-		panic("Unable to continue");
-
-	printk(KERN_EMERG "Attempting to continue.\n");
-
-	/*
-	 * Do not clear the MSR_IA32_MCi_STATUS if the error is not
-	 * recoverable/continuable.This will allow BIOS to look at the MSRs
-	 * for errors if the OS could not log the error.
-	 */
-	for (i = 0; i < nr_mce_banks; i++) {
-		u32 msr;
-		msr = MSR_IA32_MC0_STATUS+i*4;
-		rdmsr(msr, low, high);
-		if (high&(1<<31)) {
-			/* Clear it */
-			wrmsr(msr, 0UL, 0UL);
-			/* Serialize */
-			wmb();
-			add_taint(TAINT_MACHINE_CHECK);
-		}
-	}
-	mcgstl &= ~(1<<2);
-	wrmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-}
-
-void intel_p4_mcheck_init(struct cpuinfo_x86 *c)
-{
-	u32 l, h;
-	int i;
-
-	machine_check_vector = intel_machine_check;
-	wmb();
-
-	printk(KERN_INFO "Intel machine check architecture supported.\n");
-	rdmsr(MSR_IA32_MCG_CAP, l, h);
-	if (l & (1<<8))	/* Control register present ? */
-		wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
-	nr_mce_banks = l & 0xff;
-
-	for (i = 0; i < nr_mce_banks; i++) {
-		wrmsr(MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
-		wrmsr(MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0);
-	}
-
-	set_in_cr4(X86_CR4_MCE);
-	printk(KERN_INFO "Intel machine check reporting enabled on CPU#%d.\n",
-		smp_processor_id());
-
-	/* Check for P4/Xeon extended MCE MSRs */
-	rdmsr(MSR_IA32_MCG_CAP, l, h);
-	if (l & (1<<9))	{/* MCG_EXT_P */
-		mce_num_extended_msrs = (l >> 16) & 0xff;
-		printk(KERN_INFO "CPU%d: Intel P4/Xeon Extended MCE MSRs (%d)"
-				" available\n",
-			smp_processor_id(), mce_num_extended_msrs);
-
-#ifdef CONFIG_X86_MCE_P4THERMAL
-		/* Check for P4/Xeon Thermal monitor */
-		intel_init_thermal(c);
-#endif
-	}
-}
diff --git a/arch/x86/kernel/cpu/mcheck/p6.c b/arch/x86/kernel/cpu/mcheck/p6.c
deleted file mode 100644
index 01e4f817818..00000000000
--- a/arch/x86/kernel/cpu/mcheck/p6.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * P6 specific Machine Check Exception Reporting
- * (C) Copyright 2002 Alan Cox <alan@lxorguk.ukuu.org.uk>
- */
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/mce.h>
-#include <asm/msr.h>
-
-/* Machine Check Handler For PII/PIII */
-static void intel_machine_check(struct pt_regs *regs, long error_code)
-{
-	u32 alow, ahigh, high, low;
-	u32 mcgstl, mcgsth;
-	int recover = 1;
-	int i;
-
-	rdmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-	if (mcgstl & (1<<0))	/* Recoverable ? */
-		recover = 0;
-
-	printk(KERN_EMERG "CPU %d: Machine Check Exception: %08x%08x\n",
-		smp_processor_id(), mcgsth, mcgstl);
-
-	for (i = 0; i < nr_mce_banks; i++) {
-		rdmsr(MSR_IA32_MC0_STATUS+i*4, low, high);
-		if (high & (1<<31)) {
-			char misc[20];
-			char addr[24];
-
-			misc[0] = '\0';
-			addr[0] = '\0';
-
-			if (high & (1<<29))
-				recover |= 1;
-			if (high & (1<<25))
-				recover |= 2;
-			high &= ~(1<<31);
-
-			if (high & (1<<27)) {
-				rdmsr(MSR_IA32_MC0_MISC+i*4, alow, ahigh);
-				snprintf(misc, 20, "[%08x%08x]", ahigh, alow);
-			}
-			if (high & (1<<26)) {
-				rdmsr(MSR_IA32_MC0_ADDR+i*4, alow, ahigh);
-				snprintf(addr, 24, " at %08x%08x", ahigh, alow);
-			}
-
-			printk(KERN_EMERG "CPU %d: Bank %d: %08x%08x%s%s\n",
-				smp_processor_id(), i, high, low, misc, addr);
-		}
-	}
-
-	if (recover & 2)
-		panic("CPU context corrupt");
-	if (recover & 1)
-		panic("Unable to continue");
-
-	printk(KERN_EMERG "Attempting to continue.\n");
-	/*
-	 * Do not clear the MSR_IA32_MCi_STATUS if the error is not
-	 * recoverable/continuable.This will allow BIOS to look at the MSRs
-	 * for errors if the OS could not log the error:
-	 */
-	for (i = 0; i < nr_mce_banks; i++) {
-		unsigned int msr;
-
-		msr = MSR_IA32_MC0_STATUS+i*4;
-		rdmsr(msr, low, high);
-		if (high & (1<<31)) {
-			/* Clear it: */
-			wrmsr(msr, 0UL, 0UL);
-			/* Serialize: */
-			wmb();
-			add_taint(TAINT_MACHINE_CHECK);
-		}
-	}
-	mcgstl &= ~(1<<2);
-	wrmsr(MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
-}
-
-/* Set up machine check reporting for processors with Intel style MCE: */
-void intel_p6_mcheck_init(struct cpuinfo_x86 *c)
-{
-	u32 l, h;
-	int i;
-
-	/* Check for MCE support */
-	if (!cpu_has(c, X86_FEATURE_MCE))
-		return;
-
-	/* Check for PPro style MCA */
-	if (!cpu_has(c, X86_FEATURE_MCA))
-		return;
-
-	/* Ok machine check is available */
-	machine_check_vector = intel_machine_check;
-	/* Make sure the vector pointer is visible before we enable MCEs: */
-	wmb();
-
-	printk(KERN_INFO "Intel machine check architecture supported.\n");
-	rdmsr(MSR_IA32_MCG_CAP, l, h);
-	if (l & (1<<8))	/* Control register present ? */
-		wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
-	nr_mce_banks = l & 0xff;
-
-	/*
-	 * Following the example in IA-32 SDM Vol 3:
-	 * - MC0_CTL should not be written
-	 * - Status registers on all banks should be cleared on reset
-	 */
-	for (i = 1; i < nr_mce_banks; i++)
-		wrmsr(MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
-
-	for (i = 0; i < nr_mce_banks; i++)
-		wrmsr(MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0);
-
-	set_in_cr4(X86_CR4_MCE);
-	printk(KERN_INFO "Intel machine check reporting enabled on CPU#%d.\n",
-		smp_processor_id());
-}
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 5957a93e517..b3a1dba7533 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -34,20 +34,31 @@
 /* How long to wait between reporting thermal events */
 #define CHECK_INTERVAL		(300 * HZ)
 
-static DEFINE_PER_CPU(__u64, next_check) = INITIAL_JIFFIES;
-static DEFINE_PER_CPU(unsigned long, thermal_throttle_count);
-static DEFINE_PER_CPU(bool, thermal_throttle_active);
+/*
+ * Current thermal throttling state:
+ */
+struct thermal_state {
+	bool			is_throttled;
+
+	u64			next_check;
+	unsigned long		throttle_count;
+	unsigned long		last_throttle_count;
+};
+
+static DEFINE_PER_CPU(struct thermal_state, thermal_state);
 
-static atomic_t therm_throt_en		= ATOMIC_INIT(0);
+static atomic_t therm_throt_en	= ATOMIC_INIT(0);
 
 #ifdef CONFIG_SYSFS
 #define define_therm_throt_sysdev_one_ro(_name)				\
 	static SYSDEV_ATTR(_name, 0444, therm_throt_sysdev_show_##_name, NULL)
 
 #define define_therm_throt_sysdev_show_func(name)			\
-static ssize_t therm_throt_sysdev_show_##name(struct sys_device *dev,	\
-					struct sysdev_attribute *attr,	\
-					      char *buf)		\
+									\
+static ssize_t therm_throt_sysdev_show_##name(				\
+			struct sys_device *dev,				\
+			struct sysdev_attribute *attr,			\
+			char *buf)					\
 {									\
 	unsigned int cpu = dev->id;					\
 	ssize_t ret;							\
@@ -55,7 +66,7 @@ static ssize_t therm_throt_sysdev_show_##name(struct sys_device *dev,	\
 	preempt_disable();	/* CPU hotplug */			\
 	if (cpu_online(cpu))						\
 		ret = sprintf(buf, "%lu\n",				\
-			      per_cpu(thermal_throttle_##name, cpu));	\
+			      per_cpu(thermal_state, cpu).name);	\
 	else								\
 		ret = 0;						\
 	preempt_enable();						\
@@ -63,11 +74,11 @@ static ssize_t therm_throt_sysdev_show_##name(struct sys_device *dev,	\
 	return ret;							\
 }
 
-define_therm_throt_sysdev_show_func(count);
-define_therm_throt_sysdev_one_ro(count);
+define_therm_throt_sysdev_show_func(throttle_count);
+define_therm_throt_sysdev_one_ro(throttle_count);
 
 static struct attribute *thermal_throttle_attrs[] = {
-	&attr_count.attr,
+	&attr_throttle_count.attr,
 	NULL
 };
 
@@ -93,33 +104,39 @@ static struct attribute_group thermal_throttle_attr_group = {
  *          1 : Event should be logged further, and a message has been
  *              printed to the syslog.
  */
-static int therm_throt_process(int curr)
+static int therm_throt_process(bool is_throttled)
 {
-	unsigned int cpu = smp_processor_id();
-	__u64 tmp_jiffs = get_jiffies_64();
-	bool was_throttled = __get_cpu_var(thermal_throttle_active);
-	bool is_throttled = __get_cpu_var(thermal_throttle_active) = curr;
+	struct thermal_state *state;
+	unsigned int this_cpu;
+	bool was_throttled;
+	u64 now;
+
+	this_cpu = smp_processor_id();
+	now = get_jiffies_64();
+	state = &per_cpu(thermal_state, this_cpu);
+
+	was_throttled = state->is_throttled;
+	state->is_throttled = is_throttled;
 
 	if (is_throttled)
-		__get_cpu_var(thermal_throttle_count)++;
+		state->throttle_count++;
 
-	if (!(was_throttled ^ is_throttled) &&
-	    time_before64(tmp_jiffs, __get_cpu_var(next_check)))
+	if (time_before64(now, state->next_check) &&
+			state->throttle_count != state->last_throttle_count)
 		return 0;
 
-	__get_cpu_var(next_check) = tmp_jiffs + CHECK_INTERVAL;
+	state->next_check = now + CHECK_INTERVAL;
+	state->last_throttle_count = state->throttle_count;
 
 	/* if we just entered the thermal event */
 	if (is_throttled) {
-		printk(KERN_CRIT "CPU%d: Temperature above threshold, "
-		       "cpu clock throttled (total events = %lu)\n",
-		       cpu, __get_cpu_var(thermal_throttle_count));
+		printk(KERN_CRIT "CPU%d: Temperature above threshold, cpu clock throttled (total events = %lu)\n", this_cpu, state->throttle_count);
 
 		add_taint(TAINT_MACHINE_CHECK);
 		return 1;
 	}
 	if (was_throttled) {
-		printk(KERN_INFO "CPU%d: Temperature/speed normal\n", cpu);
+		printk(KERN_INFO "CPU%d: Temperature/speed normal\n", this_cpu);
 		return 1;
 	}
 
@@ -213,7 +230,7 @@ static void intel_thermal_interrupt(void)
 	__u64 msr_val;
 
 	rdmsrl(MSR_IA32_THERM_STATUS, msr_val);
-	if (therm_throt_process(msr_val & THERM_STATUS_PROCHOT))
+	if (therm_throt_process((msr_val & THERM_STATUS_PROCHOT) != 0))
 		mce_log_therm_throt_event(msr_val);
 }
 
@@ -260,9 +277,6 @@ void intel_init_thermal(struct cpuinfo_x86 *c)
 		return;
 	}
 
-	if (cpu_has(c, X86_FEATURE_TM2) && (l & MSR_IA32_MISC_ENABLE_TM2))
-		tm2 = 1;
-
 	/* Check whether a vector already exists */
 	if (h & APIC_VECTOR_MASK) {
 		printk(KERN_DEBUG
@@ -271,6 +285,16 @@ void intel_init_thermal(struct cpuinfo_x86 *c)
 		return;
 	}
 
+	/* early Pentium M models use different method for enabling TM2 */
+	if (cpu_has(c, X86_FEATURE_TM2)) {
+		if (c->x86 == 6 && (c->x86_model == 9 || c->x86_model == 13)) {
+			rdmsr(MSR_THERM2_CTL, l, h);
+			if (l & MSR_THERM2_CTL_TM_SELECT)
+				tm2 = 1;
+		} else if (l & MSR_IA32_MISC_ENABLE_TM2)
+			tm2 = 1;
+	}
+
 	/* We'll mask the thermal vector in the lapic till we're ready: */
 	h = THERMAL_APIC_VECTOR | APIC_DM_FIXED | APIC_LVT_MASKED;
 	apic_write(APIC_LVTTHMR, h);
diff --git a/arch/x86/kernel/cpu/mtrr/amd.c b/arch/x86/kernel/cpu/mtrr/amd.c
index ee2331b0e58..33af14110df 100644
--- a/arch/x86/kernel/cpu/mtrr/amd.c
+++ b/arch/x86/kernel/cpu/mtrr/amd.c
@@ -7,15 +7,15 @@
 
 static void
 amd_get_mtrr(unsigned int reg, unsigned long *base,
-	     unsigned long *size, mtrr_type * type)
+	     unsigned long *size, mtrr_type *type)
 {
 	unsigned long low, high;
 
 	rdmsr(MSR_K6_UWCCR, low, high);
-	/*  Upper dword is region 1, lower is region 0  */
+	/* Upper dword is region 1, lower is region 0 */
 	if (reg == 1)
 		low = high;
-	/*  The base masks off on the right alignment  */
+	/* The base masks off on the right alignment */
 	*base = (low & 0xFFFE0000) >> PAGE_SHIFT;
 	*type = 0;
 	if (low & 1)
@@ -27,74 +27,81 @@ amd_get_mtrr(unsigned int reg, unsigned long *base,
 		return;
 	}
 	/*
-	 *  This needs a little explaining. The size is stored as an
-	 *  inverted mask of bits of 128K granularity 15 bits long offset
-	 *  2 bits
+	 * This needs a little explaining. The size is stored as an
+	 * inverted mask of bits of 128K granularity 15 bits long offset
+	 * 2 bits.
 	 *
-	 *  So to get a size we do invert the mask and add 1 to the lowest
-	 *  mask bit (4 as its 2 bits in). This gives us a size we then shift
-	 *  to turn into 128K blocks
+	 * So to get a size we do invert the mask and add 1 to the lowest
+	 * mask bit (4 as its 2 bits in). This gives us a size we then shift
+	 * to turn into 128K blocks.
 	 *
-	 *  eg              111 1111 1111 1100      is 512K
+	 * eg              111 1111 1111 1100      is 512K
 	 *
-	 *  invert          000 0000 0000 0011
-	 *  +1              000 0000 0000 0100
-	 *  *128K   ...
+	 * invert          000 0000 0000 0011
+	 * +1              000 0000 0000 0100
+	 * *128K   ...
 	 */
 	low = (~low) & 0x1FFFC;
 	*size = (low + 4) << (15 - PAGE_SHIFT);
-	return;
 }
 
-static void amd_set_mtrr(unsigned int reg, unsigned long base,
-			 unsigned long size, mtrr_type type)
-/*  [SUMMARY] Set variable MTRR register on the local CPU.
-    <reg> The register to set.
-    <base> The base address of the region.
-    <size> The size of the region. If this is 0 the region is disabled.
-    <type> The type of the region.
-    [RETURNS] Nothing.
-*/
+/**
+ * amd_set_mtrr - Set variable MTRR register on the local CPU.
+ *
+ * @reg The register to set.
+ * @base The base address of the region.
+ * @size The size of the region. If this is 0 the region is disabled.
+ * @type The type of the region.
+ *
+ * Returns nothing.
+ */
+static void
+amd_set_mtrr(unsigned int reg, unsigned long base, unsigned long size, mtrr_type type)
 {
 	u32 regs[2];
 
 	/*
-	 *  Low is MTRR0 , High MTRR 1
+	 * Low is MTRR0, High MTRR 1
 	 */
 	rdmsr(MSR_K6_UWCCR, regs[0], regs[1]);
 	/*
-	 *  Blank to disable
+	 * Blank to disable
 	 */
-	if (size == 0)
+	if (size == 0) {
 		regs[reg] = 0;
-	else
-		/* Set the register to the base, the type (off by one) and an
-		   inverted bitmask of the size The size is the only odd
-		   bit. We are fed say 512K We invert this and we get 111 1111
-		   1111 1011 but if you subtract one and invert you get the   
-		   desired 111 1111 1111 1100 mask
-
-		   But ~(x - 1) == ~x + 1 == -x. Two's complement rocks!  */
+	} else {
+		/*
+		 * Set the register to the base, the type (off by one) and an
+		 * inverted bitmask of the size The size is the only odd
+		 * bit. We are fed say 512K We invert this and we get 111 1111
+		 * 1111 1011 but if you subtract one and invert you get the
+		 * desired 111 1111 1111 1100 mask
+		 *
+		 *  But ~(x - 1) == ~x + 1 == -x. Two's complement rocks!
+		 */
 		regs[reg] = (-size >> (15 - PAGE_SHIFT) & 0x0001FFFC)
 		    | (base << PAGE_SHIFT) | (type + 1);
+	}
 
 	/*
-	 *  The writeback rule is quite specific. See the manual. Its
-	 *  disable local interrupts, write back the cache, set the mtrr
+	 * The writeback rule is quite specific. See the manual. Its
+	 * disable local interrupts, write back the cache, set the mtrr
 	 */
 	wbinvd();
 	wrmsr(MSR_K6_UWCCR, regs[0], regs[1]);
 }
 
-static int amd_validate_add_page(unsigned long base, unsigned long size, unsigned int type)
+static int
+amd_validate_add_page(unsigned long base, unsigned long size, unsigned int type)
 {
-	/* Apply the K6 block alignment and size rules
-	   In order
-	   o Uncached or gathering only
-	   o 128K or bigger block
-	   o Power of 2 block
-	   o base suitably aligned to the power
-	*/
+	/*
+	 * Apply the K6 block alignment and size rules
+	 * In order
+	 * o Uncached or gathering only
+	 * o 128K or bigger block
+	 * o Power of 2 block
+	 * o base suitably aligned to the power
+	 */
 	if (type > MTRR_TYPE_WRCOMB || size < (1 << (17 - PAGE_SHIFT))
 	    || (size & ~(size - 1)) - size || (base & (size - 1)))
 		return -EINVAL;
@@ -115,5 +122,3 @@ int __init amd_init_mtrr(void)
 	set_mtrr_ops(&amd_mtrr_ops);
 	return 0;
 }
-
-//arch_initcall(amd_mtrr_init);
diff --git a/arch/x86/kernel/cpu/mtrr/centaur.c b/arch/x86/kernel/cpu/mtrr/centaur.c
index cb9aa3a7a7a..de89f14eff3 100644
--- a/arch/x86/kernel/cpu/mtrr/centaur.c
+++ b/arch/x86/kernel/cpu/mtrr/centaur.c
@@ -1,7 +1,9 @@
 #include <linux/init.h>
 #include <linux/mm.h>
+
 #include <asm/mtrr.h>
 #include <asm/msr.h>
+
 #include "mtrr.h"
 
 static struct {
@@ -12,25 +14,25 @@ static struct {
 static u8 centaur_mcr_reserved;
 static u8 centaur_mcr_type;	/* 0 for winchip, 1 for winchip2 */
 
-/*
- *	Report boot time MCR setups 
+/**
+ * centaur_get_free_region - Get a free MTRR.
+ *
+ * @base: The starting (base) address of the region.
+ * @size: The size (in bytes) of the region.
+ *
+ * Returns: the index of the region on success, else -1 on error.
  */
-
 static int
 centaur_get_free_region(unsigned long base, unsigned long size, int replace_reg)
-/*  [SUMMARY] Get a free MTRR.
-    <base> The starting (base) address of the region.
-    <size> The size (in bytes) of the region.
-    [RETURNS] The index of the region on success, else -1 on error.
-*/
 {
-	int i, max;
-	mtrr_type ltype;
 	unsigned long lbase, lsize;
+	mtrr_type ltype;
+	int i, max;
 
 	max = num_var_ranges;
 	if (replace_reg >= 0 && replace_reg < max)
 		return replace_reg;
+
 	for (i = 0; i < max; ++i) {
 		if (centaur_mcr_reserved & (1 << i))
 			continue;
@@ -38,11 +40,14 @@ centaur_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 		if (lsize == 0)
 			return i;
 	}
+
 	return -ENOSPC;
 }
 
-void
-mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi)
+/*
+ * Report boot time MCR setups
+ */
+void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi)
 {
 	centaur_mcr[mcr].low = lo;
 	centaur_mcr[mcr].high = hi;
@@ -54,33 +59,35 @@ centaur_get_mcr(unsigned int reg, unsigned long *base,
 {
 	*base = centaur_mcr[reg].high >> PAGE_SHIFT;
 	*size = -(centaur_mcr[reg].low & 0xfffff000) >> PAGE_SHIFT;
-	*type = MTRR_TYPE_WRCOMB;	/*  If it is there, it is write-combining  */
+	*type = MTRR_TYPE_WRCOMB;		/* write-combining  */
+
 	if (centaur_mcr_type == 1 && ((centaur_mcr[reg].low & 31) & 2))
 		*type = MTRR_TYPE_UNCACHABLE;
 	if (centaur_mcr_type == 1 && (centaur_mcr[reg].low & 31) == 25)
 		*type = MTRR_TYPE_WRBACK;
 	if (centaur_mcr_type == 0 && (centaur_mcr[reg].low & 31) == 31)
 		*type = MTRR_TYPE_WRBACK;
-
 }
 
-static void centaur_set_mcr(unsigned int reg, unsigned long base,
-			    unsigned long size, mtrr_type type)
+static void
+centaur_set_mcr(unsigned int reg, unsigned long base,
+		unsigned long size, mtrr_type type)
 {
 	unsigned long low, high;
 
 	if (size == 0) {
-		/*  Disable  */
+		/* Disable */
 		high = low = 0;
 	} else {
 		high = base << PAGE_SHIFT;
-		if (centaur_mcr_type == 0)
-			low = -size << PAGE_SHIFT | 0x1f;	/* only support write-combining... */
-		else {
+		if (centaur_mcr_type == 0) {
+			/* Only support write-combining... */
+			low = -size << PAGE_SHIFT | 0x1f;
+		} else {
 			if (type == MTRR_TYPE_UNCACHABLE)
-				low = -size << PAGE_SHIFT | 0x02;	/* NC */
+				low = -size << PAGE_SHIFT | 0x02; /* NC */
 			else
-				low = -size << PAGE_SHIFT | 0x09;	/* WWO,WC */
+				low = -size << PAGE_SHIFT | 0x09; /* WWO, WC */
 		}
 	}
 	centaur_mcr[reg].high = high;
@@ -88,118 +95,16 @@ static void centaur_set_mcr(unsigned int reg, unsigned long base,
 	wrmsr(MSR_IDT_MCR0 + reg, low, high);
 }
 
-#if 0
-/*
- *	Initialise the later (saner) Winchip MCR variant. In this version
- *	the BIOS can pass us the registers it has used (but not their values)
- *	and the control register is read/write
- */
-
-static void __init
-centaur_mcr1_init(void)
-{
-	unsigned i;
-	u32 lo, hi;
-
-	/* Unfortunately, MCR's are read-only, so there is no way to
-	 * find out what the bios might have done.
-	 */
-
-	rdmsr(MSR_IDT_MCR_CTRL, lo, hi);
-	if (((lo >> 17) & 7) == 1) {	/* Type 1 Winchip2 MCR */
-		lo &= ~0x1C0;	/* clear key */
-		lo |= 0x040;	/* set key to 1 */
-		wrmsr(MSR_IDT_MCR_CTRL, lo, hi);	/* unlock MCR */
-	}
-
-	centaur_mcr_type = 1;
-
-	/*
-	 *  Clear any unconfigured MCR's.
-	 */
-
-	for (i = 0; i < 8; ++i) {
-		if (centaur_mcr[i].high == 0 && centaur_mcr[i].low == 0) {
-			if (!(lo & (1 << (9 + i))))
-				wrmsr(MSR_IDT_MCR0 + i, 0, 0);
-			else
-				/*
-				 *      If the BIOS set up an MCR we cannot see it
-				 *      but we don't wish to obliterate it
-				 */
-				centaur_mcr_reserved |= (1 << i);
-		}
-	}
-	/*  
-	 *  Throw the main write-combining switch... 
-	 *  However if OOSTORE is enabled then people have already done far
-	 *  cleverer things and we should behave. 
-	 */
-
-	lo |= 15;		/* Write combine enables */
-	wrmsr(MSR_IDT_MCR_CTRL, lo, hi);
-}
-
-/*
- *	Initialise the original winchip with read only MCR registers
- *	no used bitmask for the BIOS to pass on and write only control
- */
-
-static void __init
-centaur_mcr0_init(void)
-{
-	unsigned i;
-
-	/* Unfortunately, MCR's are read-only, so there is no way to
-	 * find out what the bios might have done.
-	 */
-
-	/* Clear any unconfigured MCR's.
-	 * This way we are sure that the centaur_mcr array contains the actual
-	 * values. The disadvantage is that any BIOS tweaks are thus undone.
-	 *
-	 */
-	for (i = 0; i < 8; ++i) {
-		if (centaur_mcr[i].high == 0 && centaur_mcr[i].low == 0)
-			wrmsr(MSR_IDT_MCR0 + i, 0, 0);
-	}
-
-	wrmsr(MSR_IDT_MCR_CTRL, 0x01F0001F, 0);	/* Write only */
-}
-
-/*
- *	Initialise Winchip series MCR registers
- */
-
-static void __init
-centaur_mcr_init(void)
-{
-	struct set_mtrr_context ctxt;
-
-	set_mtrr_prepare_save(&ctxt);
-	set_mtrr_cache_disable(&ctxt);
-
-	if (boot_cpu_data.x86_model == 4)
-		centaur_mcr0_init();
-	else if (boot_cpu_data.x86_model == 8 || boot_cpu_data.x86_model == 9)
-		centaur_mcr1_init();
-
-	set_mtrr_done(&ctxt);
-}
-#endif
-
-static int centaur_validate_add_page(unsigned long base, 
-				     unsigned long size, unsigned int type)
+static int
+centaur_validate_add_page(unsigned long base, unsigned long size, unsigned int type)
 {
 	/*
-	 *  FIXME: Winchip2 supports uncached
+	 * FIXME: Winchip2 supports uncached
 	 */
-	if (type != MTRR_TYPE_WRCOMB && 
+	if (type != MTRR_TYPE_WRCOMB &&
 	    (centaur_mcr_type == 0 || type != MTRR_TYPE_UNCACHABLE)) {
-		printk(KERN_WARNING
-		       "mtrr: only write-combining%s supported\n",
-		       centaur_mcr_type ? " and uncacheable are"
-		       : " is");
+		pr_warning("mtrr: only write-combining%s supported\n",
+			   centaur_mcr_type ? " and uncacheable are" : " is");
 		return -EINVAL;
 	}
 	return 0;
@@ -207,7 +112,6 @@ static int centaur_validate_add_page(unsigned long base,
 
 static struct mtrr_ops centaur_mtrr_ops = {
 	.vendor            = X86_VENDOR_CENTAUR,
-//	.init              = centaur_mcr_init,
 	.set               = centaur_set_mcr,
 	.get               = centaur_get_mcr,
 	.get_free_region   = centaur_get_free_region,
@@ -220,5 +124,3 @@ int __init centaur_init_mtrr(void)
 	set_mtrr_ops(&centaur_mtrr_ops);
 	return 0;
 }
-
-//arch_initcall(centaur_init_mtrr);
diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
index 1d584a18a50..315738c74aa 100644
--- a/arch/x86/kernel/cpu/mtrr/cleanup.c
+++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
@@ -1,51 +1,75 @@
-/*  MTRR (Memory Type Range Register) cleanup
-
-    Copyright (C) 2009 Yinghai Lu
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public
-    License along with this library; if not, write to the Free
-    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
+/*
+ * MTRR (Memory Type Range Register) cleanup
+ *
+ *  Copyright (C) 2009 Yinghai Lu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/smp.h>
 #include <linux/cpu.h>
-#include <linux/mutex.h>
 #include <linux/sort.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+#include <linux/kvm_para.h>
 
+#include <asm/processor.h>
 #include <asm/e820.h>
 #include <asm/mtrr.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
 #include <asm/msr.h>
-#include <asm/kvm_para.h>
-#include "mtrr.h"
 
-/* should be related to MTRR_VAR_RANGES nums */
-#define RANGE_NUM 256
+#include "mtrr.h"
 
 struct res_range {
-	unsigned long start;
-	unsigned long end;
+	unsigned long	start;
+	unsigned long	end;
+};
+
+struct var_mtrr_range_state {
+	unsigned long	base_pfn;
+	unsigned long	size_pfn;
+	mtrr_type	type;
+};
+
+struct var_mtrr_state {
+	unsigned long	range_startk;
+	unsigned long	range_sizek;
+	unsigned long	chunk_sizek;
+	unsigned long	gran_sizek;
+	unsigned int	reg;
 };
 
+/* Should be related to MTRR_VAR_RANGES nums */
+#define RANGE_NUM				256
+
+static struct res_range __initdata		range[RANGE_NUM];
+static int __initdata				nr_range;
+
+static struct var_mtrr_range_state __initdata	range_state[RANGE_NUM];
+
+static int __initdata debug_print;
+#define Dprintk(x...) do { if (debug_print) printk(KERN_DEBUG x); } while (0)
+
+
 static int __init
-add_range(struct res_range *range, int nr_range, unsigned long start,
-			      unsigned long end)
+add_range(struct res_range *range, int nr_range,
+	  unsigned long start, unsigned long end)
 {
-	/* out of slots */
+	/* Out of slots: */
 	if (nr_range >= RANGE_NUM)
 		return nr_range;
 
@@ -58,12 +82,12 @@ add_range(struct res_range *range, int nr_range, unsigned long start,
 }
 
 static int __init
-add_range_with_merge(struct res_range *range, int nr_range, unsigned long start,
-			      unsigned long end)
+add_range_with_merge(struct res_range *range, int nr_range,
+		     unsigned long start, unsigned long end)
 {
 	int i;
 
-	/* try to merge it with old one */
+	/* Try to merge it with old one: */
 	for (i = 0; i < nr_range; i++) {
 		unsigned long final_start, final_end;
 		unsigned long common_start, common_end;
@@ -84,7 +108,7 @@ add_range_with_merge(struct res_range *range, int nr_range, unsigned long start,
 		return nr_range;
 	}
 
-	/* need to add that */
+	/* Need to add it: */
 	return add_range(range, nr_range, start, end);
 }
 
@@ -117,7 +141,7 @@ subtract_range(struct res_range *range, unsigned long start, unsigned long end)
 		}
 
 		if (start > range[j].start && end < range[j].end) {
-			/* find the new spare */
+			/* Find the new spare: */
 			for (i = 0; i < RANGE_NUM; i++) {
 				if (range[i].end == 0)
 					break;
@@ -146,14 +170,8 @@ static int __init cmp_range(const void *x1, const void *x2)
 	return start1 - start2;
 }
 
-struct var_mtrr_range_state {
-	unsigned long base_pfn;
-	unsigned long size_pfn;
-	mtrr_type type;
-};
-
-static struct var_mtrr_range_state __initdata range_state[RANGE_NUM];
-static int __initdata debug_print;
+#define BIOS_BUG_MSG KERN_WARNING \
+	"WARNING: BIOS bug: VAR MTRR %d contains strange UC entry under 1M, check with your system vendor!\n"
 
 static int __init
 x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
@@ -180,7 +198,7 @@ x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
 				 range[i].start, range[i].end + 1);
 	}
 
-	/* take out UC ranges */
+	/* Take out UC ranges: */
 	for (i = 0; i < num_var_ranges; i++) {
 		type = range_state[i].type;
 		if (type != MTRR_TYPE_UNCACHABLE &&
@@ -193,9 +211,7 @@ x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
 		if (base < (1<<(20-PAGE_SHIFT)) && mtrr_state.have_fixed &&
 		    (mtrr_state.enabled & 1)) {
 			/* Var MTRR contains UC entry below 1M? Skip it: */
-			printk(KERN_WARNING "WARNING: BIOS bug: VAR MTRR %d "
-				"contains strange UC entry under 1M, check "
-				"with your system vendor!\n", i);
+			printk(BIOS_BUG_MSG, i);
 			if (base + size <= (1<<(20-PAGE_SHIFT)))
 				continue;
 			size -= (1<<(20-PAGE_SHIFT)) - base;
@@ -237,17 +253,13 @@ x86_get_mtrr_mem_range(struct res_range *range, int nr_range,
 	return nr_range;
 }
 
-static struct res_range __initdata range[RANGE_NUM];
-static int __initdata nr_range;
-
 #ifdef CONFIG_MTRR_SANITIZER
 
 static unsigned long __init sum_ranges(struct res_range *range, int nr_range)
 {
-	unsigned long sum;
+	unsigned long sum = 0;
 	int i;
 
-	sum = 0;
 	for (i = 0; i < nr_range; i++)
 		sum += range[i].end + 1 - range[i].start;
 
@@ -278,17 +290,9 @@ static int __init mtrr_cleanup_debug_setup(char *str)
 }
 early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup);
 
-struct var_mtrr_state {
-	unsigned long	range_startk;
-	unsigned long	range_sizek;
-	unsigned long	chunk_sizek;
-	unsigned long	gran_sizek;
-	unsigned int	reg;
-};
-
 static void __init
 set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek,
-		unsigned char type, unsigned int address_bits)
+	     unsigned char type, unsigned int address_bits)
 {
 	u32 base_lo, base_hi, mask_lo, mask_hi;
 	u64 base, mask;
@@ -301,7 +305,7 @@ set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek,
 	mask = (1ULL << address_bits) - 1;
 	mask &= ~((((u64)sizek) << 10) - 1);
 
-	base  = ((u64)basek) << 10;
+	base = ((u64)basek) << 10;
 
 	base |= type;
 	mask |= 0x800;
@@ -317,15 +321,14 @@ set_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek,
 
 static void __init
 save_var_mtrr(unsigned int reg, unsigned long basek, unsigned long sizek,
-		unsigned char type)
+	      unsigned char type)
 {
 	range_state[reg].base_pfn = basek >> (PAGE_SHIFT - 10);
 	range_state[reg].size_pfn = sizek >> (PAGE_SHIFT - 10);
 	range_state[reg].type = type;
 }
 
-static void __init
-set_var_mtrr_all(unsigned int address_bits)
+static void __init set_var_mtrr_all(unsigned int address_bits)
 {
 	unsigned long basek, sizek;
 	unsigned char type;
@@ -342,11 +345,11 @@ set_var_mtrr_all(unsigned int address_bits)
 
 static unsigned long to_size_factor(unsigned long sizek, char *factorp)
 {
-	char factor;
 	unsigned long base = sizek;
+	char factor;
 
 	if (base & ((1<<10) - 1)) {
-		/* not MB alignment */
+		/* Not MB-aligned: */
 		factor = 'K';
 	} else if (base & ((1<<20) - 1)) {
 		factor = 'M';
@@ -372,11 +375,12 @@ range_to_mtrr(unsigned int reg, unsigned long range_startk,
 		unsigned long max_align, align;
 		unsigned long sizek;
 
-		/* Compute the maximum size I can make a range */
+		/* Compute the maximum size with which we can make a range: */
 		if (range_startk)
 			max_align = ffs(range_startk) - 1;
 		else
 			max_align = 32;
+
 		align = fls(range_sizek) - 1;
 		if (align > max_align)
 			align = max_align;
@@ -386,11 +390,10 @@ range_to_mtrr(unsigned int reg, unsigned long range_startk,
 			char start_factor = 'K', size_factor = 'K';
 			unsigned long start_base, size_base;
 
-			start_base = to_size_factor(range_startk,
-							 &start_factor),
-			size_base = to_size_factor(sizek, &size_factor),
+			start_base = to_size_factor(range_startk, &start_factor);
+			size_base = to_size_factor(sizek, &size_factor);
 
-			printk(KERN_DEBUG "Setting variable MTRR %d, "
+			Dprintk("Setting variable MTRR %d, "
 				"base: %ld%cB, range: %ld%cB, type %s\n",
 				reg, start_base, start_factor,
 				size_base, size_factor,
@@ -425,10 +428,11 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 	chunk_sizek = state->chunk_sizek;
 	gran_sizek = state->gran_sizek;
 
-	/* align with gran size, prevent small block used up MTRRs */
+	/* Align with gran size, prevent small block used up MTRRs: */
 	range_basek = ALIGN(state->range_startk, gran_sizek);
 	if ((range_basek > basek) && basek)
 		return second_sizek;
+
 	state->range_sizek -= (range_basek - state->range_startk);
 	range_sizek = ALIGN(state->range_sizek, gran_sizek);
 
@@ -439,22 +443,21 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 	}
 	state->range_sizek = range_sizek;
 
-	/* try to append some small hole */
+	/* Try to append some small hole: */
 	range0_basek = state->range_startk;
 	range0_sizek = ALIGN(state->range_sizek, chunk_sizek);
 
-	/* no increase */
+	/* No increase: */
 	if (range0_sizek == state->range_sizek) {
-		if (debug_print)
-			printk(KERN_DEBUG "rangeX: %016lx - %016lx\n",
-				range0_basek<<10,
-				(range0_basek + state->range_sizek)<<10);
+		Dprintk("rangeX: %016lx - %016lx\n",
+			range0_basek<<10,
+			(range0_basek + state->range_sizek)<<10);
 		state->reg = range_to_mtrr(state->reg, range0_basek,
 				state->range_sizek, MTRR_TYPE_WRBACK);
 		return 0;
 	}
 
-	/* only cut back, when it is not the last */
+	/* Only cut back when it is not the last: */
 	if (sizek) {
 		while (range0_basek + range0_sizek > (basek + sizek)) {
 			if (range0_sizek >= chunk_sizek)
@@ -470,16 +473,16 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
 second_try:
 	range_basek = range0_basek + range0_sizek;
 
-	/* one hole in the middle */
+	/* One hole in the middle: */
 	if (range_basek > basek && range_basek <= (basek + sizek))
 		second_sizek = range_basek - basek;
 
 	if (range0_sizek > state->range_sizek) {
 
-		/* one hole in middle or at end */
+		/* One hole in middle or at the end: */
 		hole_sizek = range0_sizek - state->range_sizek - second_sizek;
 
-		/* hole size should be less than half of range0 size */
+		/* Hole size should be less than half of range0 size: */
 		if (hole_sizek >= (range0_sizek >> 1) &&
 		    range0_sizek >= chunk_sizek) {
 			range0_sizek -= chunk_sizek;
@@ -491,32 +494,30 @@ second_try:
 	}
 
 	if (range0_sizek) {
-		if (debug_print)
-			printk(KERN_DEBUG "range0: %016lx - %016lx\n",
-				range0_basek<<10,
-				(range0_basek + range0_sizek)<<10);
+		Dprintk("range0: %016lx - %016lx\n",
+			range0_basek<<10,
+			(range0_basek + range0_sizek)<<10);
 		state->reg = range_to_mtrr(state->reg, range0_basek,
 				range0_sizek, MTRR_TYPE_WRBACK);
 	}
 
 	if (range0_sizek < state->range_sizek) {
-		/* need to handle left over */
+		/* Need to handle left over range: */
 		range_sizek = state->range_sizek - range0_sizek;
 
-		if (debug_print)
-			printk(KERN_DEBUG "range: %016lx - %016lx\n",
-				 range_basek<<10,
-				 (range_basek + range_sizek)<<10);
+		Dprintk("range: %016lx - %016lx\n",
+			 range_basek<<10,
+			 (range_basek + range_sizek)<<10);
+
 		state->reg = range_to_mtrr(state->reg, range_basek,
 				 range_sizek, MTRR_TYPE_WRBACK);
 	}
 
 	if (hole_sizek) {
 		hole_basek = range_basek - hole_sizek - second_sizek;
-		if (debug_print)
-			printk(KERN_DEBUG "hole: %016lx - %016lx\n",
-				 hole_basek<<10,
-				 (hole_basek + hole_sizek)<<10);
+		Dprintk("hole: %016lx - %016lx\n",
+			 hole_basek<<10,
+			 (hole_basek + hole_sizek)<<10);
 		state->reg = range_to_mtrr(state->reg, hole_basek,
 				 hole_sizek, MTRR_TYPE_UNCACHABLE);
 	}
@@ -537,23 +538,23 @@ set_var_mtrr_range(struct var_mtrr_state *state, unsigned long base_pfn,
 	basek = base_pfn << (PAGE_SHIFT - 10);
 	sizek = size_pfn << (PAGE_SHIFT - 10);
 
-	/* See if I can merge with the last range */
+	/* See if I can merge with the last range: */
 	if ((basek <= 1024) ||
 	    (state->range_startk + state->range_sizek == basek)) {
 		unsigned long endk = basek + sizek;
 		state->range_sizek = endk - state->range_startk;
 		return;
 	}
-	/* Write the range mtrrs */
+	/* Write the range mtrrs: */
 	if (state->range_sizek != 0)
 		second_sizek = range_to_mtrr_with_hole(state, basek, sizek);
 
-	/* Allocate an msr */
+	/* Allocate an msr: */
 	state->range_startk = basek + second_sizek;
 	state->range_sizek  = sizek - second_sizek;
 }
 
-/* mininum size of mtrr block that can take hole */
+/* Mininum size of mtrr block that can take hole: */
 static u64 mtrr_chunk_size __initdata = (256ULL<<20);
 
 static int __init parse_mtrr_chunk_size_opt(char *p)
@@ -565,7 +566,7 @@ static int __init parse_mtrr_chunk_size_opt(char *p)
 }
 early_param("mtrr_chunk_size", parse_mtrr_chunk_size_opt);
 
-/* granity of mtrr of block */
+/* Granularity of mtrr of block: */
 static u64 mtrr_gran_size __initdata;
 
 static int __init parse_mtrr_gran_size_opt(char *p)
@@ -577,7 +578,7 @@ static int __init parse_mtrr_gran_size_opt(char *p)
 }
 early_param("mtrr_gran_size", parse_mtrr_gran_size_opt);
 
-static int nr_mtrr_spare_reg __initdata =
+static unsigned long nr_mtrr_spare_reg __initdata =
 				 CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT;
 
 static int __init parse_mtrr_spare_reg(char *arg)
@@ -586,7 +587,6 @@ static int __init parse_mtrr_spare_reg(char *arg)
 		nr_mtrr_spare_reg = simple_strtoul(arg, NULL, 0);
 	return 0;
 }
-
 early_param("mtrr_spare_reg_nr", parse_mtrr_spare_reg);
 
 static int __init
@@ -594,8 +594,8 @@ x86_setup_var_mtrrs(struct res_range *range, int nr_range,
 		    u64 chunk_size, u64 gran_size)
 {
 	struct var_mtrr_state var_state;
-	int i;
 	int num_reg;
+	int i;
 
 	var_state.range_startk	= 0;
 	var_state.range_sizek	= 0;
@@ -605,17 +605,18 @@ x86_setup_var_mtrrs(struct res_range *range, int nr_range,
 
 	memset(range_state, 0, sizeof(range_state));
 
-	/* Write the range etc */
-	for (i = 0; i < nr_range; i++)
+	/* Write the range: */
+	for (i = 0; i < nr_range; i++) {
 		set_var_mtrr_range(&var_state, range[i].start,
 				   range[i].end - range[i].start + 1);
+	}
 
-	/* Write the last range */
+	/* Write the last range: */
 	if (var_state.range_sizek != 0)
 		range_to_mtrr_with_hole(&var_state, 0, 0);
 
 	num_reg = var_state.reg;
-	/* Clear out the extra MTRR's */
+	/* Clear out the extra MTRR's: */
 	while (var_state.reg < num_var_ranges) {
 		save_var_mtrr(var_state.reg, 0, 0, 0);
 		var_state.reg++;
@@ -625,11 +626,11 @@ x86_setup_var_mtrrs(struct res_range *range, int nr_range,
 }
 
 struct mtrr_cleanup_result {
-	unsigned long gran_sizek;
-	unsigned long chunk_sizek;
-	unsigned long lose_cover_sizek;
-	unsigned int num_reg;
-	int bad;
+	unsigned long	gran_sizek;
+	unsigned long	chunk_sizek;
+	unsigned long	lose_cover_sizek;
+	unsigned int	num_reg;
+	int		bad;
 };
 
 /*
@@ -645,10 +646,10 @@ static unsigned long __initdata min_loss_pfn[RANGE_NUM];
 
 static void __init print_out_mtrr_range_state(void)
 {
-	int i;
 	char start_factor = 'K', size_factor = 'K';
 	unsigned long start_base, size_base;
 	mtrr_type type;
+	int i;
 
 	for (i = 0; i < num_var_ranges; i++) {
 
@@ -676,10 +677,10 @@ static int __init mtrr_need_cleanup(void)
 	int i;
 	mtrr_type type;
 	unsigned long size;
-	/* extra one for all 0 */
+	/* Extra one for all 0: */
 	int num[MTRR_NUM_TYPES + 1];
 
-	/* check entries number */
+	/* Check entries number: */
 	memset(num, 0, sizeof(num));
 	for (i = 0; i < num_var_ranges; i++) {
 		type = range_state[i].type;
@@ -693,88 +694,86 @@ static int __init mtrr_need_cleanup(void)
 		num[type]++;
 	}
 
-	/* check if we got UC entries */
+	/* Check if we got UC entries: */
 	if (!num[MTRR_TYPE_UNCACHABLE])
 		return 0;
 
-	/* check if we only had WB and UC */
+	/* Check if we only had WB and UC */
 	if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] !=
-		num_var_ranges - num[MTRR_NUM_TYPES])
+	    num_var_ranges - num[MTRR_NUM_TYPES])
 		return 0;
 
 	return 1;
 }
 
 static unsigned long __initdata range_sums;
-static void __init mtrr_calc_range_state(u64 chunk_size, u64 gran_size,
-					 unsigned long extra_remove_base,
-					 unsigned long extra_remove_size,
-					 int i)
+
+static void __init
+mtrr_calc_range_state(u64 chunk_size, u64 gran_size,
+		      unsigned long x_remove_base,
+		      unsigned long x_remove_size, int i)
 {
-	int num_reg;
 	static struct res_range range_new[RANGE_NUM];
-	static int nr_range_new;
 	unsigned long range_sums_new;
+	static int nr_range_new;
+	int num_reg;
 
-	/* convert ranges to var ranges state */
-	num_reg = x86_setup_var_mtrrs(range, nr_range,
-						chunk_size, gran_size);
+	/* Convert ranges to var ranges state: */
+	num_reg = x86_setup_var_mtrrs(range, nr_range, chunk_size, gran_size);
 
-	/* we got new setting in range_state, check it */
+	/* We got new setting in range_state, check it: */
 	memset(range_new, 0, sizeof(range_new));
 	nr_range_new = x86_get_mtrr_mem_range(range_new, 0,
-				extra_remove_base, extra_remove_size);
+				x_remove_base, x_remove_size);
 	range_sums_new = sum_ranges(range_new, nr_range_new);
 
 	result[i].chunk_sizek = chunk_size >> 10;
 	result[i].gran_sizek = gran_size >> 10;
 	result[i].num_reg = num_reg;
+
 	if (range_sums < range_sums_new) {
-		result[i].lose_cover_sizek =
-			(range_sums_new - range_sums) << PSHIFT;
+		result[i].lose_cover_sizek = (range_sums_new - range_sums) << PSHIFT;
 		result[i].bad = 1;
-	} else
-		result[i].lose_cover_sizek =
-			(range_sums - range_sums_new) << PSHIFT;
+	} else {
+		result[i].lose_cover_sizek = (range_sums - range_sums_new) << PSHIFT;
+	}
 
-	/* double check it */
+	/* Double check it: */
 	if (!result[i].bad && !result[i].lose_cover_sizek) {
-		if (nr_range_new != nr_range ||
-			memcmp(range, range_new, sizeof(range)))
-				result[i].bad = 1;
+		if (nr_range_new != nr_range || memcmp(range, range_new, sizeof(range)))
+			result[i].bad = 1;
 	}
 
-	if (!result[i].bad && (range_sums - range_sums_new <
-				min_loss_pfn[num_reg])) {
-		min_loss_pfn[num_reg] =
-			range_sums - range_sums_new;
-	}
+	if (!result[i].bad && (range_sums - range_sums_new < min_loss_pfn[num_reg]))
+		min_loss_pfn[num_reg] = range_sums - range_sums_new;
 }
 
 static void __init mtrr_print_out_one_result(int i)
 {
-	char gran_factor, chunk_factor, lose_factor;
 	unsigned long gran_base, chunk_base, lose_base;
+	char gran_factor, chunk_factor, lose_factor;
 
 	gran_base = to_size_factor(result[i].gran_sizek, &gran_factor),
 	chunk_base = to_size_factor(result[i].chunk_sizek, &chunk_factor),
 	lose_base = to_size_factor(result[i].lose_cover_sizek, &lose_factor),
-	printk(KERN_INFO "%sgran_size: %ld%c \tchunk_size: %ld%c \t",
-			result[i].bad ? "*BAD*" : " ",
-			gran_base, gran_factor, chunk_base, chunk_factor);
-	printk(KERN_CONT "num_reg: %d  \tlose cover RAM: %s%ld%c\n",
-			result[i].num_reg, result[i].bad ? "-" : "",
-			lose_base, lose_factor);
+
+	pr_info("%sgran_size: %ld%c \tchunk_size: %ld%c \t",
+		result[i].bad ? "*BAD*" : " ",
+		gran_base, gran_factor, chunk_base, chunk_factor);
+	pr_cont("num_reg: %d  \tlose cover RAM: %s%ld%c\n",
+		result[i].num_reg, result[i].bad ? "-" : "",
+		lose_base, lose_factor);
 }
 
 static int __init mtrr_search_optimal_index(void)
 {
-	int i;
 	int num_reg_good;
 	int index_good;
+	int i;
 
 	if (nr_mtrr_spare_reg >= num_var_ranges)
 		nr_mtrr_spare_reg = num_var_ranges - 1;
+
 	num_reg_good = -1;
 	for (i = num_var_ranges - nr_mtrr_spare_reg; i > 0; i--) {
 		if (!min_loss_pfn[i])
@@ -796,24 +795,24 @@ static int __init mtrr_search_optimal_index(void)
 	return index_good;
 }
 
-
 int __init mtrr_cleanup(unsigned address_bits)
 {
-	unsigned long extra_remove_base, extra_remove_size;
+	unsigned long x_remove_base, x_remove_size;
 	unsigned long base, size, def, dummy;
-	mtrr_type type;
 	u64 chunk_size, gran_size;
+	mtrr_type type;
 	int index_good;
 	int i;
 
 	if (!is_cpu(INTEL) || enable_mtrr_cleanup < 1)
 		return 0;
+
 	rdmsr(MSR_MTRRdefType, def, dummy);
 	def &= 0xff;
 	if (def != MTRR_TYPE_UNCACHABLE)
 		return 0;
 
-	/* get it and store it aside */
+	/* Get it and store it aside: */
 	memset(range_state, 0, sizeof(range_state));
 	for (i = 0; i < num_var_ranges; i++) {
 		mtrr_if->get(i, &base, &size, &type);
@@ -822,29 +821,28 @@ int __init mtrr_cleanup(unsigned address_bits)
 		range_state[i].type = type;
 	}
 
-	/* check if we need handle it and can handle it */
+	/* Check if we need handle it and can handle it: */
 	if (!mtrr_need_cleanup())
 		return 0;
 
-	/* print original var MTRRs at first, for debugging: */
+	/* Print original var MTRRs at first, for debugging: */
 	printk(KERN_DEBUG "original variable MTRRs\n");
 	print_out_mtrr_range_state();
 
 	memset(range, 0, sizeof(range));
-	extra_remove_size = 0;
-	extra_remove_base = 1 << (32 - PAGE_SHIFT);
+	x_remove_size = 0;
+	x_remove_base = 1 << (32 - PAGE_SHIFT);
 	if (mtrr_tom2)
-		extra_remove_size =
-			(mtrr_tom2 >> PAGE_SHIFT) - extra_remove_base;
-	nr_range = x86_get_mtrr_mem_range(range, 0, extra_remove_base,
-					  extra_remove_size);
+		x_remove_size = (mtrr_tom2 >> PAGE_SHIFT) - x_remove_base;
+
+	nr_range = x86_get_mtrr_mem_range(range, 0, x_remove_base, x_remove_size);
 	/*
-	 * [0, 1M) should always be coverred by var mtrr with WB
-	 * and fixed mtrrs should take effective before var mtrr for it
+	 * [0, 1M) should always be covered by var mtrr with WB
+	 * and fixed mtrrs should take effect before var mtrr for it:
 	 */
 	nr_range = add_range_with_merge(range, nr_range, 0,
 					(1ULL<<(20 - PAGE_SHIFT)) - 1);
-	/* sort the ranges */
+	/* Sort the ranges: */
 	sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL);
 
 	range_sums = sum_ranges(range, nr_range);
@@ -854,7 +852,7 @@ int __init mtrr_cleanup(unsigned address_bits)
 	if (mtrr_chunk_size && mtrr_gran_size) {
 		i = 0;
 		mtrr_calc_range_state(mtrr_chunk_size, mtrr_gran_size,
-				      extra_remove_base, extra_remove_size, i);
+				      x_remove_base, x_remove_size, i);
 
 		mtrr_print_out_one_result(i);
 
@@ -880,7 +878,7 @@ int __init mtrr_cleanup(unsigned address_bits)
 				continue;
 
 			mtrr_calc_range_state(chunk_size, gran_size,
-				      extra_remove_base, extra_remove_size, i);
+				      x_remove_base, x_remove_size, i);
 			if (debug_print) {
 				mtrr_print_out_one_result(i);
 				printk(KERN_INFO "\n");
@@ -890,7 +888,7 @@ int __init mtrr_cleanup(unsigned address_bits)
 		}
 	}
 
-	/* try to find the optimal index */
+	/* Try to find the optimal index: */
 	index_good = mtrr_search_optimal_index();
 
 	if (index_good != -1) {
@@ -898,7 +896,7 @@ int __init mtrr_cleanup(unsigned address_bits)
 		i = index_good;
 		mtrr_print_out_one_result(i);
 
-		/* convert ranges to var ranges state */
+		/* Convert ranges to var ranges state: */
 		chunk_size = result[i].chunk_sizek;
 		chunk_size <<= 10;
 		gran_size = result[i].gran_sizek;
@@ -941,8 +939,8 @@ early_param("disable_mtrr_trim", disable_mtrr_trim_setup);
  * Note this won't check if the MTRRs < 4GB where the magic bit doesn't
  * apply to are wrong, but so far we don't know of any such case in the wild.
  */
-#define Tom2Enabled (1U << 21)
-#define Tom2ForceMemTypeWB (1U << 22)
+#define Tom2Enabled		(1U << 21)
+#define Tom2ForceMemTypeWB	(1U << 22)
 
 int __init amd_special_default_mtrr(void)
 {
@@ -952,7 +950,7 @@ int __init amd_special_default_mtrr(void)
 		return 0;
 	if (boot_cpu_data.x86 < 0xf || boot_cpu_data.x86 > 0x11)
 		return 0;
-	/* In case some hypervisor doesn't pass SYSCFG through */
+	/* In case some hypervisor doesn't pass SYSCFG through: */
 	if (rdmsr_safe(MSR_K8_SYSCFG, &l, &h) < 0)
 		return 0;
 	/*
@@ -965,19 +963,21 @@ int __init amd_special_default_mtrr(void)
 	return 0;
 }
 
-static u64 __init real_trim_memory(unsigned long start_pfn,
-				   unsigned long limit_pfn)
+static u64 __init
+real_trim_memory(unsigned long start_pfn, unsigned long limit_pfn)
 {
 	u64 trim_start, trim_size;
+
 	trim_start = start_pfn;
 	trim_start <<= PAGE_SHIFT;
+
 	trim_size = limit_pfn;
 	trim_size <<= PAGE_SHIFT;
 	trim_size -= trim_start;
 
-	return e820_update_range(trim_start, trim_size, E820_RAM,
-				E820_RESERVED);
+	return e820_update_range(trim_start, trim_size, E820_RAM, E820_RESERVED);
 }
+
 /**
  * mtrr_trim_uncached_memory - trim RAM not covered by MTRRs
  * @end_pfn: ending page frame number
@@ -985,7 +985,7 @@ static u64 __init real_trim_memory(unsigned long start_pfn,
  * Some buggy BIOSes don't setup the MTRRs properly for systems with certain
  * memory configurations.  This routine checks that the highest MTRR matches
  * the end of memory, to make sure the MTRRs having a write back type cover
- * all of the memory the kernel is intending to use. If not, it'll trim any
+ * all of the memory the kernel is intending to use.  If not, it'll trim any
  * memory off the end by adjusting end_pfn, removing it from the kernel's
  * allocation pools, warning the user with an obnoxious message.
  */
@@ -994,21 +994,22 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 	unsigned long i, base, size, highest_pfn = 0, def, dummy;
 	mtrr_type type;
 	u64 total_trim_size;
-
 	/* extra one for all 0 */
 	int num[MTRR_NUM_TYPES + 1];
+
 	/*
 	 * Make sure we only trim uncachable memory on machines that
 	 * support the Intel MTRR architecture:
 	 */
 	if (!is_cpu(INTEL) || disable_mtrr_trim)
 		return 0;
+
 	rdmsr(MSR_MTRRdefType, def, dummy);
 	def &= 0xff;
 	if (def != MTRR_TYPE_UNCACHABLE)
 		return 0;
 
-	/* get it and store it aside */
+	/* Get it and store it aside: */
 	memset(range_state, 0, sizeof(range_state));
 	for (i = 0; i < num_var_ranges; i++) {
 		mtrr_if->get(i, &base, &size, &type);
@@ -1017,7 +1018,7 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 		range_state[i].type = type;
 	}
 
-	/* Find highest cached pfn */
+	/* Find highest cached pfn: */
 	for (i = 0; i < num_var_ranges; i++) {
 		type = range_state[i].type;
 		if (type != MTRR_TYPE_WRBACK)
@@ -1028,13 +1029,13 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 			highest_pfn = base + size;
 	}
 
-	/* kvm/qemu doesn't have mtrr set right, don't trim them all */
+	/* kvm/qemu doesn't have mtrr set right, don't trim them all: */
 	if (!highest_pfn) {
 		printk(KERN_INFO "CPU MTRRs all blank - virtualized system.\n");
 		return 0;
 	}
 
-	/* check entries number */
+	/* Check entries number: */
 	memset(num, 0, sizeof(num));
 	for (i = 0; i < num_var_ranges; i++) {
 		type = range_state[i].type;
@@ -1046,11 +1047,11 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 		num[type]++;
 	}
 
-	/* no entry for WB? */
+	/* No entry for WB? */
 	if (!num[MTRR_TYPE_WRBACK])
 		return 0;
 
-	/* check if we only had WB and UC */
+	/* Check if we only had WB and UC: */
 	if (num[MTRR_TYPE_WRBACK] + num[MTRR_TYPE_UNCACHABLE] !=
 		num_var_ranges - num[MTRR_NUM_TYPES])
 		return 0;
@@ -1066,31 +1067,31 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 	}
 	nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0);
 
+	/* Check the head: */
 	total_trim_size = 0;
-	/* check the head */
 	if (range[0].start)
 		total_trim_size += real_trim_memory(0, range[0].start);
-	/* check the holes */
+
+	/* Check the holes: */
 	for (i = 0; i < nr_range - 1; i++) {
 		if (range[i].end + 1 < range[i+1].start)
 			total_trim_size += real_trim_memory(range[i].end + 1,
 							    range[i+1].start);
 	}
-	/* check the top */
+
+	/* Check the top: */
 	i = nr_range - 1;
 	if (range[i].end + 1 < end_pfn)
 		total_trim_size += real_trim_memory(range[i].end + 1,
 							 end_pfn);
 
 	if (total_trim_size) {
-		printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover"
-			" all of memory, losing %lluMB of RAM.\n",
-			total_trim_size >> 20);
+		pr_warning("WARNING: BIOS bug: CPU MTRRs don't cover all of memory, losing %lluMB of RAM.\n", total_trim_size >> 20);
 
 		if (!changed_by_mtrr_cleanup)
 			WARN_ON(1);
 
-		printk(KERN_INFO "update e820 for mtrr\n");
+		pr_info("update e820 for mtrr\n");
 		update_e820();
 
 		return 1;
@@ -1098,4 +1099,3 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
 
 	return 0;
 }
-
diff --git a/arch/x86/kernel/cpu/mtrr/cyrix.c b/arch/x86/kernel/cpu/mtrr/cyrix.c
index ff14c320040..228d982ce09 100644
--- a/arch/x86/kernel/cpu/mtrr/cyrix.c
+++ b/arch/x86/kernel/cpu/mtrr/cyrix.c
@@ -1,38 +1,40 @@
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/mm.h>
-#include <asm/mtrr.h>
-#include <asm/msr.h>
-#include <asm/io.h>
+
 #include <asm/processor-cyrix.h>
 #include <asm/processor-flags.h>
+#include <asm/mtrr.h>
+#include <asm/msr.h>
+
 #include "mtrr.h"
 
 static void
 cyrix_get_arr(unsigned int reg, unsigned long *base,
 	      unsigned long *size, mtrr_type * type)
 {
-	unsigned long flags;
 	unsigned char arr, ccr3, rcr, shift;
+	unsigned long flags;
 
 	arr = CX86_ARR_BASE + (reg << 1) + reg;	/* avoid multiplication by 3 */
 
-	/* Save flags and disable interrupts */
 	local_irq_save(flags);
 
 	ccr3 = getCx86(CX86_CCR3);
 	setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10);	/* enable MAPEN */
-	((unsigned char *) base)[3] = getCx86(arr);
-	((unsigned char *) base)[2] = getCx86(arr + 1);
-	((unsigned char *) base)[1] = getCx86(arr + 2);
+	((unsigned char *)base)[3] = getCx86(arr);
+	((unsigned char *)base)[2] = getCx86(arr + 1);
+	((unsigned char *)base)[1] = getCx86(arr + 2);
 	rcr = getCx86(CX86_RCR_BASE + reg);
-	setCx86(CX86_CCR3, ccr3);	/* disable MAPEN */
+	setCx86(CX86_CCR3, ccr3);			/* disable MAPEN */
 
-	/* Enable interrupts if it was enabled previously */
 	local_irq_restore(flags);
+
 	shift = ((unsigned char *) base)[1] & 0x0f;
 	*base >>= PAGE_SHIFT;
 
-	/* Power of two, at least 4K on ARR0-ARR6, 256K on ARR7
+	/*
+	 * Power of two, at least 4K on ARR0-ARR6, 256K on ARR7
 	 * Note: shift==0xf means 4G, this is unsupported.
 	 */
 	if (shift)
@@ -76,17 +78,20 @@ cyrix_get_arr(unsigned int reg, unsigned long *base,
 	}
 }
 
+/*
+ * cyrix_get_free_region - get a free ARR.
+ *
+ * @base: the starting (base) address of the region.
+ * @size: the size (in bytes) of the region.
+ *
+ * Returns: the index of the region on success, else -1 on error.
+*/
 static int
 cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
-/*  [SUMMARY] Get a free ARR.
-    <base> The starting (base) address of the region.
-    <size> The size (in bytes) of the region.
-    [RETURNS] The index of the region on success, else -1 on error.
-*/
 {
-	int i;
-	mtrr_type ltype;
 	unsigned long lbase, lsize;
+	mtrr_type ltype;
+	int i;
 
 	switch (replace_reg) {
 	case 7:
@@ -107,14 +112,17 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 		cyrix_get_arr(7, &lbase, &lsize, &ltype);
 		if (lsize == 0)
 			return 7;
-		/*  Else try ARR0-ARR6 first  */
+		/* Else try ARR0-ARR6 first  */
 	} else {
 		for (i = 0; i < 7; i++) {
 			cyrix_get_arr(i, &lbase, &lsize, &ltype);
 			if (lsize == 0)
 				return i;
 		}
-		/* ARR0-ARR6 isn't free, try ARR7 but its size must be at least 256K */
+		/*
+		 * ARR0-ARR6 isn't free
+		 * try ARR7 but its size must be at least 256K
+		 */
 		cyrix_get_arr(i, &lbase, &lsize, &ltype);
 		if ((lsize == 0) && (size >= 0x40))
 			return i;
@@ -122,21 +130,22 @@ cyrix_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 	return -ENOSPC;
 }
 
-static u32 cr4 = 0;
-static u32 ccr3;
+static u32 cr4, ccr3;
 
 static void prepare_set(void)
 {
 	u32 cr0;
 
 	/*  Save value of CR4 and clear Page Global Enable (bit 7)  */
-	if ( cpu_has_pge ) {
+	if (cpu_has_pge) {
 		cr4 = read_cr4();
 		write_cr4(cr4 & ~X86_CR4_PGE);
 	}
 
-	/*  Disable and flush caches. Note that wbinvd flushes the TLBs as
-	    a side-effect  */
+	/*
+	 * Disable and flush caches.
+	 * Note that wbinvd flushes the TLBs as a side-effect
+	 */
 	cr0 = read_cr0() | X86_CR0_CD;
 	wbinvd();
 	write_cr0(cr0);
@@ -147,22 +156,21 @@ static void prepare_set(void)
 
 	/* Cyrix ARRs - everything else was excluded at the top */
 	setCx86(CX86_CCR3, (ccr3 & 0x0f) | 0x10);
-
 }
 
 static void post_set(void)
 {
-	/*  Flush caches and TLBs  */
+	/* Flush caches and TLBs */
 	wbinvd();
 
 	/* Cyrix ARRs - everything else was excluded at the top */
 	setCx86(CX86_CCR3, ccr3);
-		
-	/*  Enable caches  */
+
+	/* Enable caches */
 	write_cr0(read_cr0() & 0xbfffffff);
 
-	/*  Restore value of CR4  */
-	if ( cpu_has_pge )
+	/* Restore value of CR4 */
+	if (cpu_has_pge)
 		write_cr4(cr4);
 }
 
@@ -178,7 +186,8 @@ static void cyrix_set_arr(unsigned int reg, unsigned long base,
 		size >>= 6;
 
 	size &= 0x7fff;		/* make sure arr_size <= 14 */
-	for (arr_size = 0; size; arr_size++, size >>= 1) ;
+	for (arr_size = 0; size; arr_size++, size >>= 1)
+		;
 
 	if (reg < 7) {
 		switch (type) {
@@ -215,18 +224,18 @@ static void cyrix_set_arr(unsigned int reg, unsigned long base,
 	prepare_set();
 
 	base <<= PAGE_SHIFT;
-	setCx86(arr, ((unsigned char *) &base)[3]);
-	setCx86(arr + 1, ((unsigned char *) &base)[2]);
-	setCx86(arr + 2, (((unsigned char *) &base)[1]) | arr_size);
+	setCx86(arr + 0,  ((unsigned char *)&base)[3]);
+	setCx86(arr + 1,  ((unsigned char *)&base)[2]);
+	setCx86(arr + 2, (((unsigned char *)&base)[1]) | arr_size);
 	setCx86(CX86_RCR_BASE + reg, arr_type);
 
 	post_set();
 }
 
 typedef struct {
-	unsigned long base;
-	unsigned long size;
-	mtrr_type type;
+	unsigned long	base;
+	unsigned long	size;
+	mtrr_type	type;
 } arr_state_t;
 
 static arr_state_t arr_state[8] = {
@@ -247,16 +256,17 @@ static void cyrix_set_all(void)
 		setCx86(CX86_CCR0 + i, ccr_state[i]);
 	for (; i < 7; i++)
 		setCx86(CX86_CCR4 + i, ccr_state[i]);
-	for (i = 0; i < 8; i++)
-		cyrix_set_arr(i, arr_state[i].base, 
+
+	for (i = 0; i < 8; i++) {
+		cyrix_set_arr(i, arr_state[i].base,
 			      arr_state[i].size, arr_state[i].type);
+	}
 
 	post_set();
 }
 
 static struct mtrr_ops cyrix_mtrr_ops = {
 	.vendor            = X86_VENDOR_CYRIX,
-//	.init              = cyrix_arr_init,
 	.set_all	   = cyrix_set_all,
 	.set               = cyrix_set_arr,
 	.get               = cyrix_get_arr,
@@ -270,5 +280,3 @@ int __init cyrix_init_mtrr(void)
 	set_mtrr_ops(&cyrix_mtrr_ops);
 	return 0;
 }
-
-//arch_initcall(cyrix_init_mtrr);
diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index 0543f69f0b2..55da0c5f68d 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -1,28 +1,34 @@
-/* This only handles 32bit MTRR on 32bit hosts. This is strictly wrong
-   because MTRRs can span upto 40 bits (36bits on most modern x86) */ 
+/*
+ * This only handles 32bit MTRR on 32bit hosts. This is strictly wrong
+ * because MTRRs can span upto 40 bits (36bits on most modern x86)
+ */
+#define DEBUG
+
+#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 #include <linux/mm.h>
-#include <linux/module.h>
-#include <asm/io.h>
-#include <asm/mtrr.h>
-#include <asm/msr.h>
-#include <asm/system.h>
-#include <asm/cpufeature.h>
+
 #include <asm/processor-flags.h>
+#include <asm/cpufeature.h>
 #include <asm/tlbflush.h>
+#include <asm/system.h>
+#include <asm/mtrr.h>
+#include <asm/msr.h>
 #include <asm/pat.h>
+
 #include "mtrr.h"
 
 struct fixed_range_block {
-	int base_msr; /* start address of an MTRR block */
-	int ranges;   /* number of MTRRs in this block  */
+	int base_msr;		/* start address of an MTRR block */
+	int ranges;		/* number of MTRRs in this block  */
 };
 
 static struct fixed_range_block fixed_range_blocks[] = {
-	{ MSR_MTRRfix64K_00000, 1 }, /* one  64k MTRR  */
-	{ MSR_MTRRfix16K_80000, 2 }, /* two  16k MTRRs */
-	{ MSR_MTRRfix4K_C0000,  8 }, /* eight 4k MTRRs */
+	{ MSR_MTRRfix64K_00000, 1 }, /* one   64k MTRR  */
+	{ MSR_MTRRfix16K_80000, 2 }, /* two   16k MTRRs */
+	{ MSR_MTRRfix4K_C0000,  8 }, /* eight  4k MTRRs */
 	{}
 };
 
@@ -30,10 +36,10 @@ static unsigned long smp_changes_mask;
 static int mtrr_state_set;
 u64 mtrr_tom2;
 
-struct mtrr_state_type mtrr_state = {};
+struct mtrr_state_type mtrr_state;
 EXPORT_SYMBOL_GPL(mtrr_state);
 
-/**
+/*
  * BIOS is expected to clear MtrrFixDramModEn bit, see for example
  * "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
  * Opteron Processors" (26094 Rev. 3.30 February 2006), section
@@ -104,9 +110,8 @@ u8 mtrr_type_lookup(u64 start, u64 end)
 	 * Look of multiple ranges matching this address and pick type
 	 * as per MTRR precedence
 	 */
-	if (!(mtrr_state.enabled & 2)) {
+	if (!(mtrr_state.enabled & 2))
 		return mtrr_state.def_type;
-	}
 
 	prev_match = 0xFF;
 	for (i = 0; i < num_var_ranges; ++i) {
@@ -125,9 +130,8 @@ u8 mtrr_type_lookup(u64 start, u64 end)
 		if (start_state != end_state)
 			return 0xFE;
 
-		if ((start & mask) != (base & mask)) {
+		if ((start & mask) != (base & mask))
 			continue;
-		}
 
 		curr_match = mtrr_state.var_ranges[i].base_lo & 0xff;
 		if (prev_match == 0xFF) {
@@ -148,9 +152,8 @@ u8 mtrr_type_lookup(u64 start, u64 end)
 			curr_match = MTRR_TYPE_WRTHROUGH;
 		}
 
-		if (prev_match != curr_match) {
+		if (prev_match != curr_match)
 			return MTRR_TYPE_UNCACHABLE;
-		}
 	}
 
 	if (mtrr_tom2) {
@@ -164,7 +167,7 @@ u8 mtrr_type_lookup(u64 start, u64 end)
 	return mtrr_state.def_type;
 }
 
-/*  Get the MSR pair relating to a var range  */
+/* Get the MSR pair relating to a var range */
 static void
 get_mtrr_var_range(unsigned int index, struct mtrr_var_range *vr)
 {
@@ -172,7 +175,7 @@ get_mtrr_var_range(unsigned int index, struct mtrr_var_range *vr)
 	rdmsr(MTRRphysMask_MSR(index), vr->mask_lo, vr->mask_hi);
 }
 
-/*  fill the MSR pair relating to a var range  */
+/* Fill the MSR pair relating to a var range */
 void fill_mtrr_var_range(unsigned int index,
 		u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi)
 {
@@ -186,10 +189,9 @@ void fill_mtrr_var_range(unsigned int index,
 	vr[index].mask_hi = mask_hi;
 }
 
-static void
-get_fixed_ranges(mtrr_type * frs)
+static void get_fixed_ranges(mtrr_type *frs)
 {
-	unsigned int *p = (unsigned int *) frs;
+	unsigned int *p = (unsigned int *)frs;
 	int i;
 
 	k8_check_syscfg_dram_mod_en();
@@ -217,22 +219,22 @@ static void __init print_fixed_last(void)
 	if (!last_fixed_end)
 		return;
 
-	printk(KERN_DEBUG "  %05X-%05X %s\n", last_fixed_start,
-		last_fixed_end - 1, mtrr_attrib_to_str(last_fixed_type));
+	pr_debug("  %05X-%05X %s\n", last_fixed_start,
+		 last_fixed_end - 1, mtrr_attrib_to_str(last_fixed_type));
 
 	last_fixed_end = 0;
 }
 
 static void __init update_fixed_last(unsigned base, unsigned end,
-				       mtrr_type type)
+				     mtrr_type type)
 {
 	last_fixed_start = base;
 	last_fixed_end = end;
 	last_fixed_type = type;
 }
 
-static void __init print_fixed(unsigned base, unsigned step,
-			       const mtrr_type *types)
+static void __init
+print_fixed(unsigned base, unsigned step, const mtrr_type *types)
 {
 	unsigned i;
 
@@ -259,54 +261,55 @@ static void __init print_mtrr_state(void)
 	unsigned int i;
 	int high_width;
 
-	printk(KERN_DEBUG "MTRR default type: %s\n",
-			 mtrr_attrib_to_str(mtrr_state.def_type));
+	pr_debug("MTRR default type: %s\n",
+		 mtrr_attrib_to_str(mtrr_state.def_type));
 	if (mtrr_state.have_fixed) {
-		printk(KERN_DEBUG "MTRR fixed ranges %sabled:\n",
-		       mtrr_state.enabled & 1 ? "en" : "dis");
+		pr_debug("MTRR fixed ranges %sabled:\n",
+			 mtrr_state.enabled & 1 ? "en" : "dis");
 		print_fixed(0x00000, 0x10000, mtrr_state.fixed_ranges + 0);
 		for (i = 0; i < 2; ++i)
-			print_fixed(0x80000 + i * 0x20000, 0x04000, mtrr_state.fixed_ranges + (i + 1) * 8);
+			print_fixed(0x80000 + i * 0x20000, 0x04000,
+				    mtrr_state.fixed_ranges + (i + 1) * 8);
 		for (i = 0; i < 8; ++i)
-			print_fixed(0xC0000 + i * 0x08000, 0x01000, mtrr_state.fixed_ranges + (i + 3) * 8);
+			print_fixed(0xC0000 + i * 0x08000, 0x01000,
+				    mtrr_state.fixed_ranges + (i + 3) * 8);
 
 		/* tail */
 		print_fixed_last();
 	}
-	printk(KERN_DEBUG "MTRR variable ranges %sabled:\n",
-	       mtrr_state.enabled & 2 ? "en" : "dis");
+	pr_debug("MTRR variable ranges %sabled:\n",
+		 mtrr_state.enabled & 2 ? "en" : "dis");
 	if (size_or_mask & 0xffffffffUL)
 		high_width = ffs(size_or_mask & 0xffffffffUL) - 1;
 	else
 		high_width = ffs(size_or_mask>>32) + 32 - 1;
 	high_width = (high_width - (32 - PAGE_SHIFT) + 3) / 4;
+
 	for (i = 0; i < num_var_ranges; ++i) {
 		if (mtrr_state.var_ranges[i].mask_lo & (1 << 11))
-			printk(KERN_DEBUG "  %u base %0*X%05X000 mask %0*X%05X000 %s\n",
-			       i,
-			       high_width,
-			       mtrr_state.var_ranges[i].base_hi,
-			       mtrr_state.var_ranges[i].base_lo >> 12,
-			       high_width,
-			       mtrr_state.var_ranges[i].mask_hi,
-			       mtrr_state.var_ranges[i].mask_lo >> 12,
-			       mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff));
+			pr_debug("  %u base %0*X%05X000 mask %0*X%05X000 %s\n",
+				 i,
+				 high_width,
+				 mtrr_state.var_ranges[i].base_hi,
+				 mtrr_state.var_ranges[i].base_lo >> 12,
+				 high_width,
+				 mtrr_state.var_ranges[i].mask_hi,
+				 mtrr_state.var_ranges[i].mask_lo >> 12,
+				 mtrr_attrib_to_str(mtrr_state.var_ranges[i].base_lo & 0xff));
 		else
-			printk(KERN_DEBUG "  %u disabled\n", i);
-	}
-	if (mtrr_tom2) {
-		printk(KERN_DEBUG "TOM2: %016llx aka %lldM\n",
-				  mtrr_tom2, mtrr_tom2>>20);
+			pr_debug("  %u disabled\n", i);
 	}
+	if (mtrr_tom2)
+		pr_debug("TOM2: %016llx aka %lldM\n", mtrr_tom2, mtrr_tom2>>20);
 }
 
-/*  Grab all of the MTRR state for this CPU into *state  */
+/* Grab all of the MTRR state for this CPU into *state */
 void __init get_mtrr_state(void)
 {
-	unsigned int i;
 	struct mtrr_var_range *vrs;
-	unsigned lo, dummy;
 	unsigned long flags;
+	unsigned lo, dummy;
+	unsigned int i;
 
 	vrs = mtrr_state.var_ranges;
 
@@ -324,6 +327,7 @@ void __init get_mtrr_state(void)
 
 	if (amd_special_default_mtrr()) {
 		unsigned low, high;
+
 		/* TOP_MEM2 */
 		rdmsr(MSR_K8_TOP_MEM2, low, high);
 		mtrr_tom2 = high;
@@ -344,10 +348,9 @@ void __init get_mtrr_state(void)
 
 	post_set();
 	local_irq_restore(flags);
-
 }
 
-/*  Some BIOS's are fucked and don't set all MTRRs the same!  */
+/* Some BIOS's are messed up and don't set all MTRRs the same! */
 void __init mtrr_state_warn(void)
 {
 	unsigned long mask = smp_changes_mask;
@@ -355,28 +358,33 @@ void __init mtrr_state_warn(void)
 	if (!mask)
 		return;
 	if (mask & MTRR_CHANGE_MASK_FIXED)
-		printk(KERN_WARNING "mtrr: your CPUs had inconsistent fixed MTRR settings\n");
+		pr_warning("mtrr: your CPUs had inconsistent fixed MTRR settings\n");
 	if (mask & MTRR_CHANGE_MASK_VARIABLE)
-		printk(KERN_WARNING "mtrr: your CPUs had inconsistent variable MTRR settings\n");
+		pr_warning("mtrr: your CPUs had inconsistent variable MTRR settings\n");
 	if (mask & MTRR_CHANGE_MASK_DEFTYPE)
-		printk(KERN_WARNING "mtrr: your CPUs had inconsistent MTRRdefType settings\n");
+		pr_warning("mtrr: your CPUs had inconsistent MTRRdefType settings\n");
+
 	printk(KERN_INFO "mtrr: probably your BIOS does not setup all CPUs.\n");
 	printk(KERN_INFO "mtrr: corrected configuration.\n");
 }
 
-/* Doesn't attempt to pass an error out to MTRR users
-   because it's quite complicated in some cases and probably not
-   worth it because the best error handling is to ignore it. */
+/*
+ * Doesn't attempt to pass an error out to MTRR users
+ * because it's quite complicated in some cases and probably not
+ * worth it because the best error handling is to ignore it.
+ */
 void mtrr_wrmsr(unsigned msr, unsigned a, unsigned b)
 {
-	if (wrmsr_safe(msr, a, b) < 0)
+	if (wrmsr_safe(msr, a, b) < 0) {
 		printk(KERN_ERR
 			"MTRR: CPU %u: Writing MSR %x to %x:%x failed\n",
 			smp_processor_id(), msr, a, b);
+	}
 }
 
 /**
- * set_fixed_range - checks & updates a fixed-range MTRR if it differs from the value it should have
+ * set_fixed_range - checks & updates a fixed-range MTRR if it
+ *		     differs from the value it should have
  * @msr: MSR address of the MTTR which should be checked and updated
  * @changed: pointer which indicates whether the MTRR needed to be changed
  * @msrwords: pointer to the MSR values which the MSR should have
@@ -401,20 +409,23 @@ static void set_fixed_range(int msr, bool *changed, unsigned int *msrwords)
  *
  * Returns: The index of the region on success, else negative on error.
  */
-int generic_get_free_region(unsigned long base, unsigned long size, int replace_reg)
+int
+generic_get_free_region(unsigned long base, unsigned long size, int replace_reg)
 {
-	int i, max;
-	mtrr_type ltype;
 	unsigned long lbase, lsize;
+	mtrr_type ltype;
+	int i, max;
 
 	max = num_var_ranges;
 	if (replace_reg >= 0 && replace_reg < max)
 		return replace_reg;
+
 	for (i = 0; i < max; ++i) {
 		mtrr_if->get(i, &lbase, &lsize, &ltype);
 		if (lsize == 0)
 			return i;
 	}
+
 	return -ENOSPC;
 }
 
@@ -434,7 +445,7 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base,
 	rdmsr(MTRRphysMask_MSR(reg), mask_lo, mask_hi);
 
 	if ((mask_lo & 0x800) == 0) {
-		/*  Invalid (i.e. free) range  */
+		/*  Invalid (i.e. free) range */
 		*base = 0;
 		*size = 0;
 		*type = 0;
@@ -471,27 +482,31 @@ out_put_cpu:
 }
 
 /**
- * set_fixed_ranges - checks & updates the fixed-range MTRRs if they differ from the saved set
+ * set_fixed_ranges - checks & updates the fixed-range MTRRs if they
+ *		      differ from the saved set
  * @frs: pointer to fixed-range MTRR values, saved by get_fixed_ranges()
  */
-static int set_fixed_ranges(mtrr_type * frs)
+static int set_fixed_ranges(mtrr_type *frs)
 {
-	unsigned long long *saved = (unsigned long long *) frs;
+	unsigned long long *saved = (unsigned long long *)frs;
 	bool changed = false;
-	int block=-1, range;
+	int block = -1, range;
 
 	k8_check_syscfg_dram_mod_en();
 
-	while (fixed_range_blocks[++block].ranges)
-	    for (range=0; range < fixed_range_blocks[block].ranges; range++)
-		set_fixed_range(fixed_range_blocks[block].base_msr + range,
-		    &changed, (unsigned int *) saved++);
+	while (fixed_range_blocks[++block].ranges) {
+		for (range = 0; range < fixed_range_blocks[block].ranges; range++)
+			set_fixed_range(fixed_range_blocks[block].base_msr + range,
+					&changed, (unsigned int *)saved++);
+	}
 
 	return changed;
 }
 
-/*  Set the MSR pair relating to a var range. Returns TRUE if
-    changes are made  */
+/*
+ * Set the MSR pair relating to a var range.
+ * Returns true if changes are made.
+ */
 static bool set_mtrr_var_ranges(unsigned int index, struct mtrr_var_range *vr)
 {
 	unsigned int lo, hi;
@@ -501,6 +516,7 @@ static bool set_mtrr_var_ranges(unsigned int index, struct mtrr_var_range *vr)
 	if ((vr->base_lo & 0xfffff0ffUL) != (lo & 0xfffff0ffUL)
 	    || (vr->base_hi & (size_and_mask >> (32 - PAGE_SHIFT))) !=
 		(hi & (size_and_mask >> (32 - PAGE_SHIFT)))) {
+
 		mtrr_wrmsr(MTRRphysBase_MSR(index), vr->base_lo, vr->base_hi);
 		changed = true;
 	}
@@ -526,21 +542,26 @@ static u32 deftype_lo, deftype_hi;
  */
 static unsigned long set_mtrr_state(void)
 {
-	unsigned int i;
 	unsigned long change_mask = 0;
+	unsigned int i;
 
-	for (i = 0; i < num_var_ranges; i++)
+	for (i = 0; i < num_var_ranges; i++) {
 		if (set_mtrr_var_ranges(i, &mtrr_state.var_ranges[i]))
 			change_mask |= MTRR_CHANGE_MASK_VARIABLE;
+	}
 
 	if (mtrr_state.have_fixed && set_fixed_ranges(mtrr_state.fixed_ranges))
 		change_mask |= MTRR_CHANGE_MASK_FIXED;
 
-	/*  Set_mtrr_restore restores the old value of MTRRdefType,
-	   so to set it we fiddle with the saved value  */
+	/*
+	 * Set_mtrr_restore restores the old value of MTRRdefType,
+	 * so to set it we fiddle with the saved value:
+	 */
 	if ((deftype_lo & 0xff) != mtrr_state.def_type
 	    || ((deftype_lo & 0xc00) >> 10) != mtrr_state.enabled) {
-		deftype_lo = (deftype_lo & ~0xcff) | mtrr_state.def_type | (mtrr_state.enabled << 10);
+
+		deftype_lo = (deftype_lo & ~0xcff) | mtrr_state.def_type |
+			     (mtrr_state.enabled << 10);
 		change_mask |= MTRR_CHANGE_MASK_DEFTYPE;
 	}
 
@@ -548,33 +569,36 @@ static unsigned long set_mtrr_state(void)
 }
 
 
-static unsigned long cr4 = 0;
+static unsigned long cr4;
 static DEFINE_SPINLOCK(set_atomicity_lock);
 
 /*
- * Since we are disabling the cache don't allow any interrupts - they
- * would run extremely slow and would only increase the pain.  The caller must
- * ensure that local interrupts are disabled and are reenabled after post_set()
- * has been called.
+ * Since we are disabling the cache don't allow any interrupts,
+ * they would run extremely slow and would only increase the pain.
+ *
+ * The caller must ensure that local interrupts are disabled and
+ * are reenabled after post_set() has been called.
  */
-
 static void prepare_set(void) __acquires(set_atomicity_lock)
 {
 	unsigned long cr0;
 
-	/*  Note that this is not ideal, since the cache is only flushed/disabled
-	   for this CPU while the MTRRs are changed, but changing this requires
-	   more invasive changes to the way the kernel boots  */
+	/*
+	 * Note that this is not ideal
+	 * since the cache is only flushed/disabled for this CPU while the
+	 * MTRRs are changed, but changing this requires more invasive
+	 * changes to the way the kernel boots
+	 */
 
 	spin_lock(&set_atomicity_lock);
 
-	/*  Enter the no-fill (CD=1, NW=0) cache mode and flush caches. */
+	/* Enter the no-fill (CD=1, NW=0) cache mode and flush caches. */
 	cr0 = read_cr0() | X86_CR0_CD;
 	write_cr0(cr0);
 	wbinvd();
 
-	/*  Save value of CR4 and clear Page Global Enable (bit 7)  */
-	if ( cpu_has_pge ) {
+	/* Save value of CR4 and clear Page Global Enable (bit 7) */
+	if (cpu_has_pge) {
 		cr4 = read_cr4();
 		write_cr4(cr4 & ~X86_CR4_PGE);
 	}
@@ -582,26 +606,26 @@ static void prepare_set(void) __acquires(set_atomicity_lock)
 	/* Flush all TLBs via a mov %cr3, %reg; mov %reg, %cr3 */
 	__flush_tlb();
 
-	/*  Save MTRR state */
+	/* Save MTRR state */
 	rdmsr(MSR_MTRRdefType, deftype_lo, deftype_hi);
 
-	/*  Disable MTRRs, and set the default type to uncached  */
+	/* Disable MTRRs, and set the default type to uncached */
 	mtrr_wrmsr(MSR_MTRRdefType, deftype_lo & ~0xcff, deftype_hi);
 }
 
 static void post_set(void) __releases(set_atomicity_lock)
 {
-	/*  Flush TLBs (no need to flush caches - they are disabled)  */
+	/* Flush TLBs (no need to flush caches - they are disabled) */
 	__flush_tlb();
 
 	/* Intel (P6) standard MTRRs */
 	mtrr_wrmsr(MSR_MTRRdefType, deftype_lo, deftype_hi);
-		
-	/*  Enable caches  */
+
+	/* Enable caches */
 	write_cr0(read_cr0() & 0xbfffffff);
 
-	/*  Restore value of CR4  */
-	if ( cpu_has_pge )
+	/* Restore value of CR4 */
+	if (cpu_has_pge)
 		write_cr4(cr4);
 	spin_unlock(&set_atomicity_lock);
 }
@@ -623,24 +647,27 @@ static void generic_set_all(void)
 	post_set();
 	local_irq_restore(flags);
 
-	/*  Use the atomic bitops to update the global mask  */
+	/* Use the atomic bitops to update the global mask */
 	for (count = 0; count < sizeof mask * 8; ++count) {
 		if (mask & 0x01)
 			set_bit(count, &smp_changes_mask);
 		mask >>= 1;
 	}
-	
+
 }
 
+/**
+ * generic_set_mtrr - set variable MTRR register on the local CPU.
+ *
+ * @reg: The register to set.
+ * @base: The base address of the region.
+ * @size: The size of the region. If this is 0 the region is disabled.
+ * @type: The type of the region.
+ *
+ * Returns nothing.
+ */
 static void generic_set_mtrr(unsigned int reg, unsigned long base,
 			     unsigned long size, mtrr_type type)
-/*  [SUMMARY] Set variable MTRR register on the local CPU.
-    <reg> The register to set.
-    <base> The base address of the region.
-    <size> The size of the region. If this is 0 the region is disabled.
-    <type> The type of the region.
-    [RETURNS] Nothing.
-*/
 {
 	unsigned long flags;
 	struct mtrr_var_range *vr;
@@ -651,8 +678,10 @@ static void generic_set_mtrr(unsigned int reg, unsigned long base,
 	prepare_set();
 
 	if (size == 0) {
-		/* The invalid bit is kept in the mask, so we simply clear the
-		   relevant mask register to disable a range. */
+		/*
+		 * The invalid bit is kept in the mask, so we simply
+		 * clear the relevant mask register to disable a range.
+		 */
 		mtrr_wrmsr(MTRRphysMask_MSR(reg), 0, 0);
 		memset(vr, 0, sizeof(struct mtrr_var_range));
 	} else {
@@ -669,46 +698,50 @@ static void generic_set_mtrr(unsigned int reg, unsigned long base,
 	local_irq_restore(flags);
 }
 
-int generic_validate_add_page(unsigned long base, unsigned long size, unsigned int type)
+int generic_validate_add_page(unsigned long base, unsigned long size,
+			      unsigned int type)
 {
 	unsigned long lbase, last;
 
-	/*  For Intel PPro stepping <= 7, must be 4 MiB aligned 
-	    and not touch 0x70000000->0x7003FFFF */
+	/*
+	 * For Intel PPro stepping <= 7
+	 * must be 4 MiB aligned and not touch 0x70000000 -> 0x7003FFFF
+	 */
 	if (is_cpu(INTEL) && boot_cpu_data.x86 == 6 &&
 	    boot_cpu_data.x86_model == 1 &&
 	    boot_cpu_data.x86_mask <= 7) {
 		if (base & ((1 << (22 - PAGE_SHIFT)) - 1)) {
-			printk(KERN_WARNING "mtrr: base(0x%lx000) is not 4 MiB aligned\n", base);
+			pr_warning("mtrr: base(0x%lx000) is not 4 MiB aligned\n", base);
 			return -EINVAL;
 		}
 		if (!(base + size < 0x70000 || base > 0x7003F) &&
 		    (type == MTRR_TYPE_WRCOMB
 		     || type == MTRR_TYPE_WRBACK)) {
-			printk(KERN_WARNING "mtrr: writable mtrr between 0x70000000 and 0x7003FFFF may hang the CPU.\n");
+			pr_warning("mtrr: writable mtrr between 0x70000000 and 0x7003FFFF may hang the CPU.\n");
 			return -EINVAL;
 		}
 	}
 
-	/*  Check upper bits of base and last are equal and lower bits are 0
-	    for base and 1 for last  */
+	/*
+	 * Check upper bits of base and last are equal and lower bits are 0
+	 * for base and 1 for last
+	 */
 	last = base + size - 1;
 	for (lbase = base; !(lbase & 1) && (last & 1);
-	     lbase = lbase >> 1, last = last >> 1) ;
+	     lbase = lbase >> 1, last = last >> 1)
+		;
 	if (lbase != last) {
-		printk(KERN_WARNING "mtrr: base(0x%lx000) is not aligned on a size(0x%lx000) boundary\n",
-		       base, size);
+		pr_warning("mtrr: base(0x%lx000) is not aligned on a size(0x%lx000) boundary\n", base, size);
 		return -EINVAL;
 	}
 	return 0;
 }
 
-
 static int generic_have_wrcomb(void)
 {
 	unsigned long config, dummy;
 	rdmsr(MSR_MTRRcap, config, dummy);
-	return (config & (1 << 10));
+	return config & (1 << 10);
 }
 
 int positive_have_wrcomb(void)
@@ -716,14 +749,15 @@ int positive_have_wrcomb(void)
 	return 1;
 }
 
-/* generic structure...
+/*
+ * Generic structure...
  */
 struct mtrr_ops generic_mtrr_ops = {
-	.use_intel_if      = 1,
-	.set_all	   = generic_set_all,
-	.get               = generic_get_mtrr,
-	.get_free_region   = generic_get_free_region,
-	.set               = generic_set_mtrr,
-	.validate_add_page = generic_validate_add_page,
-	.have_wrcomb       = generic_have_wrcomb,
+	.use_intel_if		= 1,
+	.set_all		= generic_set_all,
+	.get			= generic_get_mtrr,
+	.get_free_region	= generic_get_free_region,
+	.set			= generic_set_mtrr,
+	.validate_add_page	= generic_validate_add_page,
+	.have_wrcomb		= generic_have_wrcomb,
 };
diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c
index fb73a52913a..f04e7252760 100644
--- a/arch/x86/kernel/cpu/mtrr/if.c
+++ b/arch/x86/kernel/cpu/mtrr/if.c
@@ -1,27 +1,28 @@
-#include <linux/init.h>
-#include <linux/proc_fs.h>
 #include <linux/capability.h>
-#include <linux/ctype.h>
-#include <linux/module.h>
 #include <linux/seq_file.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
+#include <linux/proc_fs.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/init.h>
 
 #define LINE_SIZE 80
 
 #include <asm/mtrr.h>
+
 #include "mtrr.h"
 
 #define FILE_FCOUNT(f) (((struct seq_file *)((f)->private_data))->private)
 
 static const char *const mtrr_strings[MTRR_NUM_TYPES] =
 {
-    "uncachable",               /* 0 */
-    "write-combining",          /* 1 */
-    "?",                        /* 2 */
-    "?",                        /* 3 */
-    "write-through",            /* 4 */
-    "write-protect",            /* 5 */
-    "write-back",               /* 6 */
+	"uncachable",		/* 0 */
+	"write-combining",	/* 1 */
+	"?",			/* 2 */
+	"?",			/* 3 */
+	"write-through",	/* 4 */
+	"write-protect",	/* 5 */
+	"write-back",		/* 6 */
 };
 
 const char *mtrr_attrib_to_str(int x)
@@ -35,8 +36,8 @@ static int
 mtrr_file_add(unsigned long base, unsigned long size,
 	      unsigned int type, bool increment, struct file *file, int page)
 {
+	unsigned int *fcount = FILE_FCOUNT(file);
 	int reg, max;
-	unsigned int *fcount = FILE_FCOUNT(file); 
 
 	max = num_var_ranges;
 	if (fcount == NULL) {
@@ -61,8 +62,8 @@ static int
 mtrr_file_del(unsigned long base, unsigned long size,
 	      struct file *file, int page)
 {
-	int reg;
 	unsigned int *fcount = FILE_FCOUNT(file);
+	int reg;
 
 	if (!page) {
 		if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1)))
@@ -81,13 +82,14 @@ mtrr_file_del(unsigned long base, unsigned long size,
 	return reg;
 }
 
-/* RED-PEN: seq_file can seek now. this is ignored. */
+/*
+ * seq_file can seek but we ignore it.
+ *
+ * Format of control line:
+ *    "base=%Lx size=%Lx type=%s" or "disable=%d"
+ */
 static ssize_t
 mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
-/*  Format of control line:
-    "base=%Lx size=%Lx type=%s"     OR:
-    "disable=%d"
-*/
 {
 	int i, err;
 	unsigned long reg;
@@ -100,15 +102,18 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
 		return -EPERM;
 	if (!len)
 		return -EINVAL;
+
 	memset(line, 0, LINE_SIZE);
 	if (len > LINE_SIZE)
 		len = LINE_SIZE;
 	if (copy_from_user(line, buf, len - 1))
 		return -EFAULT;
+
 	linelen = strlen(line);
 	ptr = line + linelen - 1;
 	if (linelen && *ptr == '\n')
 		*ptr = '\0';
+
 	if (!strncmp(line, "disable=", 8)) {
 		reg = simple_strtoul(line + 8, &ptr, 0);
 		err = mtrr_del_page(reg, 0, 0);
@@ -116,28 +121,35 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
 			return err;
 		return len;
 	}
+
 	if (strncmp(line, "base=", 5))
 		return -EINVAL;
+
 	base = simple_strtoull(line + 5, &ptr, 0);
-	for (; isspace(*ptr); ++ptr) ;
+	while (isspace(*ptr))
+		ptr++;
+
 	if (strncmp(ptr, "size=", 5))
 		return -EINVAL;
+
 	size = simple_strtoull(ptr + 5, &ptr, 0);
 	if ((base & 0xfff) || (size & 0xfff))
 		return -EINVAL;
-	for (; isspace(*ptr); ++ptr) ;
+	while (isspace(*ptr))
+		ptr++;
+
 	if (strncmp(ptr, "type=", 5))
 		return -EINVAL;
 	ptr += 5;
-	for (; isspace(*ptr); ++ptr) ;
+	while (isspace(*ptr))
+		ptr++;
+
 	for (i = 0; i < MTRR_NUM_TYPES; ++i) {
 		if (strcmp(ptr, mtrr_strings[i]))
 			continue;
 		base >>= PAGE_SHIFT;
 		size >>= PAGE_SHIFT;
-		err =
-		    mtrr_add_page((unsigned long) base, (unsigned long) size, i,
-				  true);
+		err = mtrr_add_page((unsigned long)base, (unsigned long)size, i, true);
 		if (err < 0)
 			return err;
 		return len;
@@ -181,7 +193,9 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 	case MTRRIOC32_SET_PAGE_ENTRY:
 	case MTRRIOC32_DEL_PAGE_ENTRY:
 	case MTRRIOC32_KILL_PAGE_ENTRY: {
-		struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)__arg;
+		struct mtrr_sentry32 __user *s32;
+
+		s32 = (struct mtrr_sentry32 __user *)__arg;
 		err = get_user(sentry.base, &s32->base);
 		err |= get_user(sentry.size, &s32->size);
 		err |= get_user(sentry.type, &s32->type);
@@ -191,7 +205,9 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 	}
 	case MTRRIOC32_GET_ENTRY:
 	case MTRRIOC32_GET_PAGE_ENTRY: {
-		struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
+		struct mtrr_gentry32 __user *g32;
+
+		g32 = (struct mtrr_gentry32 __user *)__arg;
 		err = get_user(gentry.regnum, &g32->regnum);
 		err |= get_user(gentry.base, &g32->base);
 		err |= get_user(gentry.size, &g32->size);
@@ -314,7 +330,7 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 	if (err)
 		return err;
 
-	switch(cmd) {
+	switch (cmd) {
 	case MTRRIOC_GET_ENTRY:
 	case MTRRIOC_GET_PAGE_ENTRY:
 		if (copy_to_user(arg, &gentry, sizeof gentry))
@@ -323,7 +339,9 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 #ifdef CONFIG_COMPAT
 	case MTRRIOC32_GET_ENTRY:
 	case MTRRIOC32_GET_PAGE_ENTRY: {
-		struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)__arg;
+		struct mtrr_gentry32 __user *g32;
+
+		g32 = (struct mtrr_gentry32 __user *)__arg;
 		err = put_user(gentry.base, &g32->base);
 		err |= put_user(gentry.size, &g32->size);
 		err |= put_user(gentry.regnum, &g32->regnum);
@@ -335,11 +353,10 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
 	return err;
 }
 
-static int
-mtrr_close(struct inode *ino, struct file *file)
+static int mtrr_close(struct inode *ino, struct file *file)
 {
-	int i, max;
 	unsigned int *fcount = FILE_FCOUNT(file);
+	int i, max;
 
 	if (fcount != NULL) {
 		max = num_var_ranges;
@@ -359,22 +376,22 @@ static int mtrr_seq_show(struct seq_file *seq, void *offset);
 
 static int mtrr_open(struct inode *inode, struct file *file)
 {
-	if (!mtrr_if) 
+	if (!mtrr_if)
 		return -EIO;
-	if (!mtrr_if->get) 
-		return -ENXIO; 
+	if (!mtrr_if->get)
+		return -ENXIO;
 	return single_open(file, mtrr_seq_show, NULL);
 }
 
 static const struct file_operations mtrr_fops = {
-	.owner   = THIS_MODULE,
-	.open	 = mtrr_open, 
-	.read    = seq_read,
-	.llseek  = seq_lseek,
-	.write   = mtrr_write,
-	.unlocked_ioctl = mtrr_ioctl,
-	.compat_ioctl = mtrr_ioctl,
-	.release = mtrr_close,
+	.owner			= THIS_MODULE,
+	.open			= mtrr_open,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.write			= mtrr_write,
+	.unlocked_ioctl		= mtrr_ioctl,
+	.compat_ioctl		= mtrr_ioctl,
+	.release		= mtrr_close,
 };
 
 static int mtrr_seq_show(struct seq_file *seq, void *offset)
@@ -388,23 +405,24 @@ static int mtrr_seq_show(struct seq_file *seq, void *offset)
 	max = num_var_ranges;
 	for (i = 0; i < max; i++) {
 		mtrr_if->get(i, &base, &size, &type);
-		if (size == 0)
+		if (size == 0) {
 			mtrr_usage_table[i] = 0;
-		else {
-			if (size < (0x100000 >> PAGE_SHIFT)) {
-				/* less than 1MB */
-				factor = 'K';
-				size <<= PAGE_SHIFT - 10;
-			} else {
-				factor = 'M';
-				size >>= 20 - PAGE_SHIFT;
-			}
-			/* RED-PEN: base can be > 32bit */ 
-			len += seq_printf(seq, 
-				   "reg%02i: base=0x%06lx000 (%5luMB), size=%5lu%cB, count=%d: %s\n",
-			     i, base, base >> (20 - PAGE_SHIFT), size, factor,
-			     mtrr_usage_table[i], mtrr_attrib_to_str(type));
+			continue;
 		}
+		if (size < (0x100000 >> PAGE_SHIFT)) {
+			/* less than 1MB */
+			factor = 'K';
+			size <<= PAGE_SHIFT - 10;
+		} else {
+			factor = 'M';
+			size >>= 20 - PAGE_SHIFT;
+		}
+		/* Base can be > 32bit */
+		len += seq_printf(seq, "reg%02i: base=0x%06lx000 "
+			"(%5luMB), size=%5lu%cB, count=%d: %s\n",
+			i, base, base >> (20 - PAGE_SHIFT), size,
+			factor, mtrr_usage_table[i],
+			mtrr_attrib_to_str(type));
 	}
 	return 0;
 }
@@ -422,6 +440,5 @@ static int __init mtrr_if_init(void)
 	proc_create("mtrr", S_IWUSR | S_IRUGO, NULL, &mtrr_fops);
 	return 0;
 }
-
 arch_initcall(mtrr_if_init);
 #endif			/*  CONFIG_PROC_FS  */
diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
index 8fc248b5aea..84e83de5457 100644
--- a/arch/x86/kernel/cpu/mtrr/main.c
+++ b/arch/x86/kernel/cpu/mtrr/main.c
@@ -25,43 +25,49 @@
     Operating System Writer's Guide" (Intel document number 242692),
     section 11.11.7
 
-    This was cleaned and made readable by Patrick Mochel <mochel@osdl.org> 
-    on 6-7 March 2002. 
-    Source: Intel Architecture Software Developers Manual, Volume 3: 
+    This was cleaned and made readable by Patrick Mochel <mochel@osdl.org>
+    on 6-7 March 2002.
+    Source: Intel Architecture Software Developers Manual, Volume 3:
     System Programming Guide; Section 9.11. (1997 edition - PPro).
 */
 
+#define DEBUG
+
+#include <linux/types.h> /* FIXME: kvm_para.h needs this */
+
+#include <linux/kvm_para.h>
+#include <linux/uaccess.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/init.h>
+#include <linux/sort.h>
+#include <linux/cpu.h>
 #include <linux/pci.h>
 #include <linux/smp.h>
-#include <linux/cpu.h>
-#include <linux/mutex.h>
-#include <linux/sort.h>
 
+#include <asm/processor.h>
 #include <asm/e820.h>
 #include <asm/mtrr.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
 #include <asm/msr.h>
-#include <asm/kvm_para.h>
+
 #include "mtrr.h"
 
-u32 num_var_ranges = 0;
+u32 num_var_ranges;
 
 unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
 static DEFINE_MUTEX(mtrr_mutex);
 
 u64 size_or_mask, size_and_mask;
+static bool mtrr_aps_delayed_init;
 
-static struct mtrr_ops * mtrr_ops[X86_VENDOR_NUM] = {};
+static struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM];
 
-struct mtrr_ops * mtrr_if = NULL;
+struct mtrr_ops *mtrr_if;
 
 static void set_mtrr(unsigned int reg, unsigned long base,
 		     unsigned long size, mtrr_type type);
 
-void set_mtrr_ops(struct mtrr_ops * ops)
+void set_mtrr_ops(struct mtrr_ops *ops)
 {
 	if (ops->vendor && ops->vendor < X86_VENDOR_NUM)
 		mtrr_ops[ops->vendor] = ops;
@@ -72,30 +78,36 @@ static int have_wrcomb(void)
 {
 	struct pci_dev *dev;
 	u8 rev;
-	
-	if ((dev = pci_get_class(PCI_CLASS_BRIDGE_HOST << 8, NULL)) != NULL) {
-		/* ServerWorks LE chipsets < rev 6 have problems with write-combining
-		   Don't allow it and leave room for other chipsets to be tagged */
+
+	dev = pci_get_class(PCI_CLASS_BRIDGE_HOST << 8, NULL);
+	if (dev != NULL) {
+		/*
+		 * ServerWorks LE chipsets < rev 6 have problems with
+		 * write-combining. Don't allow it and leave room for other
+		 * chipsets to be tagged
+		 */
 		if (dev->vendor == PCI_VENDOR_ID_SERVERWORKS &&
 		    dev->device == PCI_DEVICE_ID_SERVERWORKS_LE) {
 			pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
 			if (rev <= 5) {
-				printk(KERN_INFO "mtrr: Serverworks LE rev < 6 detected. Write-combining disabled.\n");
+				pr_info("mtrr: Serverworks LE rev < 6 detected. Write-combining disabled.\n");
 				pci_dev_put(dev);
 				return 0;
 			}
 		}
-		/* Intel 450NX errata # 23. Non ascending cacheline evictions to
-		   write combining memory may resulting in data corruption */
+		/*
+		 * Intel 450NX errata # 23. Non ascending cacheline evictions to
+		 * write combining memory may resulting in data corruption
+		 */
 		if (dev->vendor == PCI_VENDOR_ID_INTEL &&
 		    dev->device == PCI_DEVICE_ID_INTEL_82451NX) {
-			printk(KERN_INFO "mtrr: Intel 450NX MMC detected. Write-combining disabled.\n");
+			pr_info("mtrr: Intel 450NX MMC detected. Write-combining disabled.\n");
 			pci_dev_put(dev);
 			return 0;
 		}
 		pci_dev_put(dev);
-	}		
-	return (mtrr_if->have_wrcomb ? mtrr_if->have_wrcomb() : 0);
+	}
+	return mtrr_if->have_wrcomb ? mtrr_if->have_wrcomb() : 0;
 }
 
 /*  This function returns the number of variable MTRRs  */
@@ -103,12 +115,13 @@ static void __init set_num_var_ranges(void)
 {
 	unsigned long config = 0, dummy;
 
-	if (use_intel()) {
+	if (use_intel())
 		rdmsr(MSR_MTRRcap, config, dummy);
-	} else if (is_cpu(AMD))
+	else if (is_cpu(AMD))
 		config = 2;
 	else if (is_cpu(CYRIX) || is_cpu(CENTAUR))
 		config = 8;
+
 	num_var_ranges = config & 0xff;
 }
 
@@ -130,10 +143,12 @@ struct set_mtrr_data {
 	mtrr_type	smp_type;
 };
 
+/**
+ * ipi_handler - Synchronisation handler. Executed by "other" CPUs.
+ *
+ * Returns nothing.
+ */
 static void ipi_handler(void *info)
-/*  [SUMMARY] Synchronisation handler. Executed by "other" CPUs.
-    [RETURNS] Nothing.
-*/
 {
 #ifdef CONFIG_SMP
 	struct set_mtrr_data *data = info;
@@ -142,18 +157,22 @@ static void ipi_handler(void *info)
 	local_irq_save(flags);
 
 	atomic_dec(&data->count);
-	while(!atomic_read(&data->gate))
+	while (!atomic_read(&data->gate))
 		cpu_relax();
 
 	/*  The master has cleared me to execute  */
-	if (data->smp_reg != ~0U) 
-		mtrr_if->set(data->smp_reg, data->smp_base, 
+	if (data->smp_reg != ~0U) {
+		mtrr_if->set(data->smp_reg, data->smp_base,
 			     data->smp_size, data->smp_type);
-	else
+	} else if (mtrr_aps_delayed_init) {
+		/*
+		 * Initialize the MTRRs inaddition to the synchronisation.
+		 */
 		mtrr_if->set_all();
+	}
 
 	atomic_dec(&data->count);
-	while(atomic_read(&data->gate))
+	while (atomic_read(&data->gate))
 		cpu_relax();
 
 	atomic_dec(&data->count);
@@ -161,7 +180,8 @@ static void ipi_handler(void *info)
 #endif
 }
 
-static inline int types_compatible(mtrr_type type1, mtrr_type type2) {
+static inline int types_compatible(mtrr_type type1, mtrr_type type2)
+{
 	return type1 == MTRR_TYPE_UNCACHABLE ||
 	       type2 == MTRR_TYPE_UNCACHABLE ||
 	       (type1 == MTRR_TYPE_WRTHROUGH && type2 == MTRR_TYPE_WRBACK) ||
@@ -176,10 +196,10 @@ static inline int types_compatible(mtrr_type type1, mtrr_type type2) {
  * @type:	mtrr type
  *
  * This is kinda tricky, but fortunately, Intel spelled it out for us cleanly:
- * 
+ *
  * 1. Send IPI to do the following:
  * 2. Disable Interrupts
- * 3. Wait for all procs to do so 
+ * 3. Wait for all procs to do so
  * 4. Enter no-fill cache mode
  * 5. Flush caches
  * 6. Clear PGE bit
@@ -189,26 +209,27 @@ static inline int types_compatible(mtrr_type type1, mtrr_type type2) {
  * 10. Enable all range registers
  * 11. Flush all TLBs and caches again
  * 12. Enter normal cache mode and reenable caching
- * 13. Set PGE 
+ * 13. Set PGE
  * 14. Wait for buddies to catch up
  * 15. Enable interrupts.
- * 
+ *
  * What does that mean for us? Well, first we set data.count to the number
  * of CPUs. As each CPU disables interrupts, it'll decrement it once. We wait
  * until it hits 0 and proceed. We set the data.gate flag and reset data.count.
- * Meanwhile, they are waiting for that flag to be set. Once it's set, each 
- * CPU goes through the transition of updating MTRRs. The CPU vendors may each do it 
- * differently, so we call mtrr_if->set() callback and let them take care of it.
- * When they're done, they again decrement data->count and wait for data.gate to 
- * be reset. 
- * When we finish, we wait for data.count to hit 0 and toggle the data.gate flag.
+ * Meanwhile, they are waiting for that flag to be set. Once it's set, each
+ * CPU goes through the transition of updating MTRRs.
+ * The CPU vendors may each do it differently,
+ * so we call mtrr_if->set() callback and let them take care of it.
+ * When they're done, they again decrement data->count and wait for data.gate
+ * to be reset.
+ * When we finish, we wait for data.count to hit 0 and toggle the data.gate flag
  * Everyone then enables interrupts and we all continue on.
  *
  * Note that the mechanism is the same for UP systems, too; all the SMP stuff
  * becomes nops.
  */
-static void set_mtrr(unsigned int reg, unsigned long base,
-		     unsigned long size, mtrr_type type)
+static void
+set_mtrr(unsigned int reg, unsigned long base, unsigned long size, mtrr_type type)
 {
 	struct set_mtrr_data data;
 	unsigned long flags;
@@ -218,121 +239,124 @@ static void set_mtrr(unsigned int reg, unsigned long base,
 	data.smp_size = size;
 	data.smp_type = type;
 	atomic_set(&data.count, num_booting_cpus() - 1);
-	/* make sure data.count is visible before unleashing other CPUs */
+
+	/* Make sure data.count is visible before unleashing other CPUs */
 	smp_wmb();
-	atomic_set(&data.gate,0);
+	atomic_set(&data.gate, 0);
 
-	/*  Start the ball rolling on other CPUs  */
+	/* Start the ball rolling on other CPUs */
 	if (smp_call_function(ipi_handler, &data, 0) != 0)
 		panic("mtrr: timed out waiting for other CPUs\n");
 
 	local_irq_save(flags);
 
-	while(atomic_read(&data.count))
+	while (atomic_read(&data.count))
 		cpu_relax();
 
-	/* ok, reset count and toggle gate */
+	/* Ok, reset count and toggle gate */
 	atomic_set(&data.count, num_booting_cpus() - 1);
 	smp_wmb();
-	atomic_set(&data.gate,1);
+	atomic_set(&data.gate, 1);
 
-	/* do our MTRR business */
+	/* Do our MTRR business */
 
-	/* HACK!
+	/*
+	 * HACK!
 	 * We use this same function to initialize the mtrrs on boot.
 	 * The state of the boot cpu's mtrrs has been saved, and we want
-	 * to replicate across all the APs. 
+	 * to replicate across all the APs.
 	 * If we're doing that @reg is set to something special...
 	 */
-	if (reg != ~0U) 
-		mtrr_if->set(reg,base,size,type);
+	if (reg != ~0U)
+		mtrr_if->set(reg, base, size, type);
+	else if (!mtrr_aps_delayed_init)
+		mtrr_if->set_all();
 
-	/* wait for the others */
-	while(atomic_read(&data.count))
+	/* Wait for the others */
+	while (atomic_read(&data.count))
 		cpu_relax();
 
 	atomic_set(&data.count, num_booting_cpus() - 1);
 	smp_wmb();
-	atomic_set(&data.gate,0);
+	atomic_set(&data.gate, 0);
 
 	/*
 	 * Wait here for everyone to have seen the gate change
 	 * So we're the last ones to touch 'data'
 	 */
-	while(atomic_read(&data.count))
+	while (atomic_read(&data.count))
 		cpu_relax();
 
 	local_irq_restore(flags);
 }
 
 /**
- *	mtrr_add_page - Add a memory type region
- *	@base: Physical base address of region in pages (in units of 4 kB!)
- *	@size: Physical size of region in pages (4 kB)
- *	@type: Type of MTRR desired
- *	@increment: If this is true do usage counting on the region
+ * mtrr_add_page - Add a memory type region
+ * @base: Physical base address of region in pages (in units of 4 kB!)
+ * @size: Physical size of region in pages (4 kB)
+ * @type: Type of MTRR desired
+ * @increment: If this is true do usage counting on the region
  *
- *	Memory type region registers control the caching on newer Intel and
- *	non Intel processors. This function allows drivers to request an
- *	MTRR is added. The details and hardware specifics of each processor's
- *	implementation are hidden from the caller, but nevertheless the 
- *	caller should expect to need to provide a power of two size on an
- *	equivalent power of two boundary.
+ * Memory type region registers control the caching on newer Intel and
+ * non Intel processors. This function allows drivers to request an
+ * MTRR is added. The details and hardware specifics of each processor's
+ * implementation are hidden from the caller, but nevertheless the
+ * caller should expect to need to provide a power of two size on an
+ * equivalent power of two boundary.
  *
- *	If the region cannot be added either because all regions are in use
- *	or the CPU cannot support it a negative value is returned. On success
- *	the register number for this entry is returned, but should be treated
- *	as a cookie only.
+ * If the region cannot be added either because all regions are in use
+ * or the CPU cannot support it a negative value is returned. On success
+ * the register number for this entry is returned, but should be treated
+ * as a cookie only.
  *
- *	On a multiprocessor machine the changes are made to all processors.
- *	This is required on x86 by the Intel processors.
+ * On a multiprocessor machine the changes are made to all processors.
+ * This is required on x86 by the Intel processors.
  *
- *	The available types are
+ * The available types are
  *
- *	%MTRR_TYPE_UNCACHABLE	-	No caching
+ * %MTRR_TYPE_UNCACHABLE - No caching
  *
- *	%MTRR_TYPE_WRBACK	-	Write data back in bursts whenever
+ * %MTRR_TYPE_WRBACK - Write data back in bursts whenever
  *
- *	%MTRR_TYPE_WRCOMB	-	Write data back soon but allow bursts
+ * %MTRR_TYPE_WRCOMB - Write data back soon but allow bursts
  *
- *	%MTRR_TYPE_WRTHROUGH	-	Cache reads but not writes
+ * %MTRR_TYPE_WRTHROUGH - Cache reads but not writes
  *
- *	BUGS: Needs a quiet flag for the cases where drivers do not mind
- *	failures and do not wish system log messages to be sent.
+ * BUGS: Needs a quiet flag for the cases where drivers do not mind
+ * failures and do not wish system log messages to be sent.
  */
-
-int mtrr_add_page(unsigned long base, unsigned long size, 
+int mtrr_add_page(unsigned long base, unsigned long size,
 		  unsigned int type, bool increment)
 {
+	unsigned long lbase, lsize;
 	int i, replace, error;
 	mtrr_type ltype;
-	unsigned long lbase, lsize;
 
 	if (!mtrr_if)
 		return -ENXIO;
-		
-	if ((error = mtrr_if->validate_add_page(base,size,type)))
+
+	error = mtrr_if->validate_add_page(base, size, type);
+	if (error)
 		return error;
 
 	if (type >= MTRR_NUM_TYPES) {
-		printk(KERN_WARNING "mtrr: type: %u invalid\n", type);
+		pr_warning("mtrr: type: %u invalid\n", type);
 		return -EINVAL;
 	}
 
-	/*  If the type is WC, check that this processor supports it  */
+	/* If the type is WC, check that this processor supports it */
 	if ((type == MTRR_TYPE_WRCOMB) && !have_wrcomb()) {
-		printk(KERN_WARNING
-		       "mtrr: your processor doesn't support write-combining\n");
+		pr_warning("mtrr: your processor doesn't support write-combining\n");
 		return -ENOSYS;
 	}
 
 	if (!size) {
-		printk(KERN_WARNING "mtrr: zero sized request\n");
+		pr_warning("mtrr: zero sized request\n");
 		return -EINVAL;
 	}
 
 	if (base & size_or_mask || size & size_or_mask) {
-		printk(KERN_WARNING "mtrr: base or size exceeds the MTRR width\n");
+		pr_warning("mtrr: base or size exceeds the MTRR width\n");
 		return -EINVAL;
 	}
 
@@ -341,36 +365,40 @@ int mtrr_add_page(unsigned long base, unsigned long size,
 
 	/* No CPU hotplug when we change MTRR entries */
 	get_online_cpus();
-	/*  Search for existing MTRR  */
+
+	/* Search for existing MTRR  */
 	mutex_lock(&mtrr_mutex);
 	for (i = 0; i < num_var_ranges; ++i) {
 		mtrr_if->get(i, &lbase, &lsize, &ltype);
-		if (!lsize || base > lbase + lsize - 1 || base + size - 1 < lbase)
+		if (!lsize || base > lbase + lsize - 1 ||
+		    base + size - 1 < lbase)
 			continue;
-		/*  At this point we know there is some kind of overlap/enclosure  */
+		/*
+		 * At this point we know there is some kind of
+		 * overlap/enclosure
+		 */
 		if (base < lbase || base + size - 1 > lbase + lsize - 1) {
-			if (base <= lbase && base + size - 1 >= lbase + lsize - 1) {
+			if (base <= lbase &&
+			    base + size - 1 >= lbase + lsize - 1) {
 				/*  New region encloses an existing region  */
 				if (type == ltype) {
 					replace = replace == -1 ? i : -2;
 					continue;
-				}
-				else if (types_compatible(type, ltype))
+				} else if (types_compatible(type, ltype))
 					continue;
 			}
-			printk(KERN_WARNING
-			       "mtrr: 0x%lx000,0x%lx000 overlaps existing"
-			       " 0x%lx000,0x%lx000\n", base, size, lbase,
-			       lsize);
+			pr_warning("mtrr: 0x%lx000,0x%lx000 overlaps existing"
+				" 0x%lx000,0x%lx000\n", base, size, lbase,
+				lsize);
 			goto out;
 		}
-		/*  New region is enclosed by an existing region  */
+		/* New region is enclosed by an existing region */
 		if (ltype != type) {
 			if (types_compatible(type, ltype))
 				continue;
-			printk (KERN_WARNING "mtrr: type mismatch for %lx000,%lx000 old: %s new: %s\n",
-			     base, size, mtrr_attrib_to_str(ltype),
-			     mtrr_attrib_to_str(type));
+			pr_warning("mtrr: type mismatch for %lx000,%lx000 old: %s new: %s\n",
+				base, size, mtrr_attrib_to_str(ltype),
+				mtrr_attrib_to_str(type));
 			goto out;
 		}
 		if (increment)
@@ -378,7 +406,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
 		error = i;
 		goto out;
 	}
-	/*  Search for an empty MTRR  */
+	/* Search for an empty MTRR */
 	i = mtrr_if->get_free_region(base, size, replace);
 	if (i >= 0) {
 		set_mtrr(i, base, size, type);
@@ -393,8 +421,9 @@ int mtrr_add_page(unsigned long base, unsigned long size,
 				mtrr_usage_table[replace] = 0;
 			}
 		}
-	} else
-		printk(KERN_INFO "mtrr: no more MTRRs available\n");
+	} else {
+		pr_info("mtrr: no more MTRRs available\n");
+	}
 	error = i;
  out:
 	mutex_unlock(&mtrr_mutex);
@@ -405,10 +434,8 @@ int mtrr_add_page(unsigned long base, unsigned long size,
 static int mtrr_check(unsigned long base, unsigned long size)
 {
 	if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
-		printk(KERN_WARNING
-			"mtrr: size and base must be multiples of 4 kiB\n");
-		printk(KERN_DEBUG
-			"mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
+		pr_warning("mtrr: size and base must be multiples of 4 kiB\n");
+		pr_debug("mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
 		dump_stack();
 		return -1;
 	}
@@ -416,66 +443,64 @@ static int mtrr_check(unsigned long base, unsigned long size)
 }
 
 /**
- *	mtrr_add - Add a memory type region
- *	@base: Physical base address of region
- *	@size: Physical size of region
- *	@type: Type of MTRR desired
- *	@increment: If this is true do usage counting on the region
+ * mtrr_add - Add a memory type region
+ * @base: Physical base address of region
+ * @size: Physical size of region
+ * @type: Type of MTRR desired
+ * @increment: If this is true do usage counting on the region
  *
- *	Memory type region registers control the caching on newer Intel and
- *	non Intel processors. This function allows drivers to request an
- *	MTRR is added. The details and hardware specifics of each processor's
- *	implementation are hidden from the caller, but nevertheless the 
- *	caller should expect to need to provide a power of two size on an
- *	equivalent power of two boundary.
+ * Memory type region registers control the caching on newer Intel and
+ * non Intel processors. This function allows drivers to request an
+ * MTRR is added. The details and hardware specifics of each processor's
+ * implementation are hidden from the caller, but nevertheless the
+ * caller should expect to need to provide a power of two size on an
+ * equivalent power of two boundary.
  *
- *	If the region cannot be added either because all regions are in use
- *	or the CPU cannot support it a negative value is returned. On success
- *	the register number for this entry is returned, but should be treated
- *	as a cookie only.
+ * If the region cannot be added either because all regions are in use
+ * or the CPU cannot support it a negative value is returned. On success
+ * the register number for this entry is returned, but should be treated
+ * as a cookie only.
  *
- *	On a multiprocessor machine the changes are made to all processors.
- *	This is required on x86 by the Intel processors.
+ * On a multiprocessor machine the changes are made to all processors.
+ * This is required on x86 by the Intel processors.
  *
- *	The available types are
+ * The available types are
  *
- *	%MTRR_TYPE_UNCACHABLE	-	No caching
+ * %MTRR_TYPE_UNCACHABLE - No caching
  *
- *	%MTRR_TYPE_WRBACK	-	Write data back in bursts whenever
+ * %MTRR_TYPE_WRBACK - Write data back in bursts whenever
  *
- *	%MTRR_TYPE_WRCOMB	-	Write data back soon but allow bursts
+ * %MTRR_TYPE_WRCOMB - Write data back soon but allow bursts
  *
- *	%MTRR_TYPE_WRTHROUGH	-	Cache reads but not writes
+ * %MTRR_TYPE_WRTHROUGH - Cache reads but not writes
  *
- *	BUGS: Needs a quiet flag for the cases where drivers do not mind
- *	failures and do not wish system log messages to be sent.
+ * BUGS: Needs a quiet flag for the cases where drivers do not mind
+ * failures and do not wish system log messages to be sent.
  */
-
-int
-mtrr_add(unsigned long base, unsigned long size, unsigned int type,
-	 bool increment)
+int mtrr_add(unsigned long base, unsigned long size, unsigned int type,
+	     bool increment)
 {
 	if (mtrr_check(base, size))
 		return -EINVAL;
 	return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,
 			     increment);
 }
+EXPORT_SYMBOL(mtrr_add);
 
 /**
- *	mtrr_del_page - delete a memory type region
- *	@reg: Register returned by mtrr_add
- *	@base: Physical base address
- *	@size: Size of region
+ * mtrr_del_page - delete a memory type region
+ * @reg: Register returned by mtrr_add
+ * @base: Physical base address
+ * @size: Size of region
  *
- *	If register is supplied then base and size are ignored. This is
- *	how drivers should call it.
+ * If register is supplied then base and size are ignored. This is
+ * how drivers should call it.
  *
- *	Releases an MTRR region. If the usage count drops to zero the 
- *	register is freed and the region returns to default state.
- *	On success the register is returned, on failure a negative error
- *	code.
+ * Releases an MTRR region. If the usage count drops to zero the
+ * register is freed and the region returns to default state.
+ * On success the register is returned, on failure a negative error
+ * code.
  */
-
 int mtrr_del_page(int reg, unsigned long base, unsigned long size)
 {
 	int i, max;
@@ -500,22 +525,22 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
 			}
 		}
 		if (reg < 0) {
-			printk(KERN_DEBUG "mtrr: no MTRR for %lx000,%lx000 found\n", base,
-			       size);
+			pr_debug("mtrr: no MTRR for %lx000,%lx000 found\n",
+				 base, size);
 			goto out;
 		}
 	}
 	if (reg >= max) {
-		printk(KERN_WARNING "mtrr: register: %d too big\n", reg);
+		pr_warning("mtrr: register: %d too big\n", reg);
 		goto out;
 	}
 	mtrr_if->get(reg, &lbase, &lsize, &ltype);
 	if (lsize < 1) {
-		printk(KERN_WARNING "mtrr: MTRR %d not used\n", reg);
+		pr_warning("mtrr: MTRR %d not used\n", reg);
 		goto out;
 	}
 	if (mtrr_usage_table[reg] < 1) {
-		printk(KERN_WARNING "mtrr: reg: %d has count=0\n", reg);
+		pr_warning("mtrr: reg: %d has count=0\n", reg);
 		goto out;
 	}
 	if (--mtrr_usage_table[reg] < 1)
@@ -526,33 +551,31 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
 	put_online_cpus();
 	return error;
 }
+
 /**
- *	mtrr_del - delete a memory type region
- *	@reg: Register returned by mtrr_add
- *	@base: Physical base address
- *	@size: Size of region
+ * mtrr_del - delete a memory type region
+ * @reg: Register returned by mtrr_add
+ * @base: Physical base address
+ * @size: Size of region
  *
- *	If register is supplied then base and size are ignored. This is
- *	how drivers should call it.
+ * If register is supplied then base and size are ignored. This is
+ * how drivers should call it.
  *
- *	Releases an MTRR region. If the usage count drops to zero the 
- *	register is freed and the region returns to default state.
- *	On success the register is returned, on failure a negative error
- *	code.
+ * Releases an MTRR region. If the usage count drops to zero the
+ * register is freed and the region returns to default state.
+ * On success the register is returned, on failure a negative error
+ * code.
  */
-
-int
-mtrr_del(int reg, unsigned long base, unsigned long size)
+int mtrr_del(int reg, unsigned long base, unsigned long size)
 {
 	if (mtrr_check(base, size))
 		return -EINVAL;
 	return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
 }
-
-EXPORT_SYMBOL(mtrr_add);
 EXPORT_SYMBOL(mtrr_del);
 
-/* HACK ALERT!
+/*
+ * HACK ALERT!
  * These should be called implicitly, but we can't yet until all the initcall
  * stuff is done...
  */
@@ -576,29 +599,28 @@ struct mtrr_value {
 
 static struct mtrr_value mtrr_value[MTRR_MAX_VAR_RANGES];
 
-static int mtrr_save(struct sys_device * sysdev, pm_message_t state)
+static int mtrr_save(struct sys_device *sysdev, pm_message_t state)
 {
 	int i;
 
 	for (i = 0; i < num_var_ranges; i++) {
-		mtrr_if->get(i,
-			     &mtrr_value[i].lbase,
-			     &mtrr_value[i].lsize,
-			     &mtrr_value[i].ltype);
+		mtrr_if->get(i, &mtrr_value[i].lbase,
+				&mtrr_value[i].lsize,
+				&mtrr_value[i].ltype);
 	}
 	return 0;
 }
 
-static int mtrr_restore(struct sys_device * sysdev)
+static int mtrr_restore(struct sys_device *sysdev)
 {
 	int i;
 
 	for (i = 0; i < num_var_ranges; i++) {
-		if (mtrr_value[i].lsize)
-			set_mtrr(i,
-				 mtrr_value[i].lbase,
-				 mtrr_value[i].lsize,
-				 mtrr_value[i].ltype);
+		if (mtrr_value[i].lsize) {
+			set_mtrr(i, mtrr_value[i].lbase,
+				    mtrr_value[i].lsize,
+				    mtrr_value[i].ltype);
+		}
 	}
 	return 0;
 }
@@ -615,26 +637,29 @@ int __initdata changed_by_mtrr_cleanup;
 /**
  * mtrr_bp_init - initialize mtrrs on the boot CPU
  *
- * This needs to be called early; before any of the other CPUs are 
+ * This needs to be called early; before any of the other CPUs are
  * initialized (i.e. before smp_init()).
- * 
+ *
  */
 void __init mtrr_bp_init(void)
 {
 	u32 phys_addr;
+
 	init_ifs();
 
 	phys_addr = 32;
 
 	if (cpu_has_mtrr) {
 		mtrr_if = &generic_mtrr_ops;
-		size_or_mask = 0xff000000;	/* 36 bits */
+		size_or_mask = 0xff000000;			/* 36 bits */
 		size_and_mask = 0x00f00000;
 		phys_addr = 36;
 
-		/* This is an AMD specific MSR, but we assume(hope?) that
-		   Intel will implement it to when they extend the address
-		   bus of the Xeon. */
+		/*
+		 * This is an AMD specific MSR, but we assume(hope?) that
+		 * Intel will implement it to when they extend the address
+		 * bus of the Xeon.
+		 */
 		if (cpuid_eax(0x80000000) >= 0x80000008) {
 			phys_addr = cpuid_eax(0x80000008) & 0xff;
 			/* CPUID workaround for Intel 0F33/0F34 CPU */
@@ -649,9 +674,11 @@ void __init mtrr_bp_init(void)
 			size_and_mask = ~size_or_mask & 0xfffff00000ULL;
 		} else if (boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR &&
 			   boot_cpu_data.x86 == 6) {
-			/* VIA C* family have Intel style MTRRs, but
-			   don't support PAE */
-			size_or_mask = 0xfff00000;	/* 32 bits */
+			/*
+			 * VIA C* family have Intel style MTRRs,
+			 * but don't support PAE
+			 */
+			size_or_mask = 0xfff00000;		/* 32 bits */
 			size_and_mask = 0;
 			phys_addr = 32;
 		}
@@ -694,30 +721,28 @@ void __init mtrr_bp_init(void)
 				changed_by_mtrr_cleanup = 1;
 				mtrr_if->set_all();
 			}
-
 		}
 	}
 }
 
 void mtrr_ap_init(void)
 {
-	unsigned long flags;
-
-	if (!mtrr_if || !use_intel())
+	if (!use_intel() || mtrr_aps_delayed_init)
 		return;
 	/*
-	 * Ideally we should hold mtrr_mutex here to avoid mtrr entries changed,
-	 * but this routine will be called in cpu boot time, holding the lock
-	 * breaks it. This routine is called in two cases: 1.very earily time
-	 * of software resume, when there absolutely isn't mtrr entry changes;
-	 * 2.cpu hotadd time. We let mtrr_add/del_page hold cpuhotplug lock to
-	 * prevent mtrr entry changes
+	 * Ideally we should hold mtrr_mutex here to avoid mtrr entries
+	 * changed, but this routine will be called in cpu boot time,
+	 * holding the lock breaks it.
+	 *
+	 * This routine is called in two cases:
+	 *
+	 *   1. very earily time of software resume, when there absolutely
+	 *      isn't mtrr entry changes;
+	 *
+	 *   2. cpu hotadd time. We let mtrr_add/del_page hold cpuhotplug
+	 *      lock to prevent mtrr entry changes
 	 */
-	local_irq_save(flags);
-
-	mtrr_if->set_all();
-
-	local_irq_restore(flags);
+	set_mtrr(~0U, 0, 0, 0);
 }
 
 /**
@@ -728,23 +753,55 @@ void mtrr_save_state(void)
 	smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1);
 }
 
+void set_mtrr_aps_delayed_init(void)
+{
+	if (!use_intel())
+		return;
+
+	mtrr_aps_delayed_init = true;
+}
+
+/*
+ * MTRR initialization for all AP's
+ */
+void mtrr_aps_init(void)
+{
+	if (!use_intel())
+		return;
+
+	set_mtrr(~0U, 0, 0, 0);
+	mtrr_aps_delayed_init = false;
+}
+
+void mtrr_bp_restore(void)
+{
+	if (!use_intel())
+		return;
+
+	mtrr_if->set_all();
+}
+
 static int __init mtrr_init_finialize(void)
 {
 	if (!mtrr_if)
 		return 0;
+
 	if (use_intel()) {
 		if (!changed_by_mtrr_cleanup)
 			mtrr_state_warn();
-	} else {
-		/* The CPUs haven't MTRR and seem to not support SMP. They have
-		 * specific drivers, we use a tricky method to support
-		 * suspend/resume for them.
-		 * TBD: is there any system with such CPU which supports
-		 * suspend/resume?  if no, we should remove the code.
-		 */
-		sysdev_driver_register(&cpu_sysdev_class,
-			&mtrr_sysdev_driver);
+		return 0;
 	}
+
+	/*
+	 * The CPU has no MTRR and seems to not support SMP. They have
+	 * specific drivers, we use a tricky method to support
+	 * suspend/resume for them.
+	 *
+	 * TBD: is there any system with such CPU which supports
+	 * suspend/resume? If no, we should remove the code.
+	 */
+	sysdev_driver_register(&cpu_sysdev_class, &mtrr_sysdev_driver);
+
 	return 0;
 }
 subsys_initcall(mtrr_init_finialize);
diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h
index 7538b767f20..a501dee9a87 100644
--- a/arch/x86/kernel/cpu/mtrr/mtrr.h
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
@@ -1,5 +1,5 @@
 /*
- * local mtrr defines.
+ * local MTRR defines.
  */
 
 #include <linux/types.h>
@@ -14,13 +14,12 @@ extern unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
 struct mtrr_ops {
 	u32	vendor;
 	u32	use_intel_if;
-//	void	(*init)(void);
 	void	(*set)(unsigned int reg, unsigned long base,
 		       unsigned long size, mtrr_type type);
 	void	(*set_all)(void);
 
 	void	(*get)(unsigned int reg, unsigned long *base,
-		       unsigned long *size, mtrr_type * type);
+		       unsigned long *size, mtrr_type *type);
 	int	(*get_free_region)(unsigned long base, unsigned long size,
 				   int replace_reg);
 	int	(*validate_add_page)(unsigned long base, unsigned long size,
@@ -39,11 +38,11 @@ extern int positive_have_wrcomb(void);
 
 /* library functions for processor-specific routines */
 struct set_mtrr_context {
-	unsigned long flags;
-	unsigned long cr4val;
-	u32 deftype_lo;
-	u32 deftype_hi;
-	u32 ccr3;
+	unsigned long	flags;
+	unsigned long	cr4val;
+	u32		deftype_lo;
+	u32		deftype_hi;
+	u32		ccr3;
 };
 
 void set_mtrr_done(struct set_mtrr_context *ctxt);
@@ -54,10 +53,10 @@ void fill_mtrr_var_range(unsigned int index,
 		u32 base_lo, u32 base_hi, u32 mask_lo, u32 mask_hi);
 void get_mtrr_state(void);
 
-extern void set_mtrr_ops(struct mtrr_ops * ops);
+extern void set_mtrr_ops(struct mtrr_ops *ops);
 
 extern u64 size_or_mask, size_and_mask;
-extern struct mtrr_ops * mtrr_if;
+extern struct mtrr_ops *mtrr_if;
 
 #define is_cpu(vnd)	(mtrr_if && mtrr_if->vendor == X86_VENDOR_##vnd)
 #define use_intel()	(mtrr_if && mtrr_if->use_intel_if == 1)
diff --git a/arch/x86/kernel/cpu/mtrr/state.c b/arch/x86/kernel/cpu/mtrr/state.c
index 1f5fb1588d1..dfc80b4e6b0 100644
--- a/arch/x86/kernel/cpu/mtrr/state.c
+++ b/arch/x86/kernel/cpu/mtrr/state.c
@@ -1,24 +1,25 @@
-#include <linux/mm.h>
 #include <linux/init.h>
-#include <asm/io.h>
-#include <asm/mtrr.h>
-#include <asm/msr.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+
 #include <asm/processor-cyrix.h>
 #include <asm/processor-flags.h>
-#include "mtrr.h"
+#include <asm/mtrr.h>
+#include <asm/msr.h>
 
+#include "mtrr.h"
 
-/*  Put the processor into a state where MTRRs can be safely set  */
+/* Put the processor into a state where MTRRs can be safely set */
 void set_mtrr_prepare_save(struct set_mtrr_context *ctxt)
 {
 	unsigned int cr0;
 
-	/*  Disable interrupts locally  */
+	/* Disable interrupts locally */
 	local_irq_save(ctxt->flags);
 
 	if (use_intel() || is_cpu(CYRIX)) {
 
-		/*  Save value of CR4 and clear Page Global Enable (bit 7)  */
+		/* Save value of CR4 and clear Page Global Enable (bit 7) */
 		if (cpu_has_pge) {
 			ctxt->cr4val = read_cr4();
 			write_cr4(ctxt->cr4val & ~X86_CR4_PGE);
@@ -33,50 +34,61 @@ void set_mtrr_prepare_save(struct set_mtrr_context *ctxt)
 		write_cr0(cr0);
 		wbinvd();
 
-		if (use_intel())
-			/*  Save MTRR state */
+		if (use_intel()) {
+			/* Save MTRR state */
 			rdmsr(MSR_MTRRdefType, ctxt->deftype_lo, ctxt->deftype_hi);
-		else
-			/* Cyrix ARRs - everything else were excluded at the top */
+		} else {
+			/*
+			 * Cyrix ARRs -
+			 * everything else were excluded at the top
+			 */
 			ctxt->ccr3 = getCx86(CX86_CCR3);
+		}
 	}
 }
 
 void set_mtrr_cache_disable(struct set_mtrr_context *ctxt)
 {
-	if (use_intel())
-		/*  Disable MTRRs, and set the default type to uncached  */
+	if (use_intel()) {
+		/* Disable MTRRs, and set the default type to uncached */
 		mtrr_wrmsr(MSR_MTRRdefType, ctxt->deftype_lo & 0xf300UL,
 		      ctxt->deftype_hi);
-	else if (is_cpu(CYRIX))
-		/* Cyrix ARRs - everything else were excluded at the top */
-		setCx86(CX86_CCR3, (ctxt->ccr3 & 0x0f) | 0x10);
+	} else {
+		if (is_cpu(CYRIX)) {
+			/* Cyrix ARRs - everything else were excluded at the top */
+			setCx86(CX86_CCR3, (ctxt->ccr3 & 0x0f) | 0x10);
+		}
+	}
 }
 
-/*  Restore the processor after a set_mtrr_prepare  */
+/* Restore the processor after a set_mtrr_prepare */
 void set_mtrr_done(struct set_mtrr_context *ctxt)
 {
 	if (use_intel() || is_cpu(CYRIX)) {
 
-		/*  Flush caches and TLBs  */
+		/* Flush caches and TLBs */
 		wbinvd();
 
-		/*  Restore MTRRdefType  */
-		if (use_intel())
+		/* Restore MTRRdefType */
+		if (use_intel()) {
 			/* Intel (P6) standard MTRRs */
-			mtrr_wrmsr(MSR_MTRRdefType, ctxt->deftype_lo, ctxt->deftype_hi);
-		else
-			/* Cyrix ARRs - everything else was excluded at the top */
+			mtrr_wrmsr(MSR_MTRRdefType, ctxt->deftype_lo,
+				   ctxt->deftype_hi);
+		} else {
+			/*
+			 * Cyrix ARRs -
+			 * everything else was excluded at the top
+			 */
 			setCx86(CX86_CCR3, ctxt->ccr3);
+		}
 
-		/*  Enable caches  */
+		/* Enable caches */
 		write_cr0(read_cr0() & 0xbfffffff);
 
-		/*  Restore value of CR4  */
+		/* Restore value of CR4 */
 		if (cpu_has_pge)
 			write_cr4(ctxt->cr4val);
 	}
-	/*  Re-enable interrupts locally (if enabled previously)  */
+	/* Re-enable interrupts locally (if enabled previously) */
 	local_irq_restore(ctxt->flags);
 }
-
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_event.c
index 900332b800f..b5801c31184 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1,16 +1,17 @@
 /*
- * Performance counter x86 architecture code
+ * Performance events x86 architecture code
  *
  *  Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
  *  Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar
  *  Copyright (C) 2009 Jaswinder Singh Rajput
  *  Copyright (C) 2009 Advanced Micro Devices, Inc., Robert Richter
  *  Copyright (C) 2008-2009 Red Hat, Inc., Peter Zijlstra <pzijlstr@redhat.com>
+ *  Copyright (C) 2009 Intel Corporation, <markus.t.metzger@intel.com>
  *
  *  For licencing details see kernel-base/COPYING
  */
 
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/capability.h>
 #include <linux/notifier.h>
 #include <linux/hardirq.h>
@@ -20,19 +21,60 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 #include <linux/highmem.h>
+#include <linux/cpu.h>
 
 #include <asm/apic.h>
 #include <asm/stacktrace.h>
 #include <asm/nmi.h>
 
-static u64 perf_counter_mask __read_mostly;
+static u64 perf_event_mask __read_mostly;
 
-struct cpu_hw_counters {
-	struct perf_counter	*counters[X86_PMC_IDX_MAX];
+/* The maximal number of PEBS events: */
+#define MAX_PEBS_EVENTS	4
+
+/* The size of a BTS record in bytes: */
+#define BTS_RECORD_SIZE		24
+
+/* The size of a per-cpu BTS buffer in bytes: */
+#define BTS_BUFFER_SIZE		(BTS_RECORD_SIZE * 2048)
+
+/* The BTS overflow threshold in bytes from the end of the buffer: */
+#define BTS_OVFL_TH		(BTS_RECORD_SIZE * 128)
+
+
+/*
+ * Bits in the debugctlmsr controlling branch tracing.
+ */
+#define X86_DEBUGCTL_TR			(1 << 6)
+#define X86_DEBUGCTL_BTS		(1 << 7)
+#define X86_DEBUGCTL_BTINT		(1 << 8)
+#define X86_DEBUGCTL_BTS_OFF_OS		(1 << 9)
+#define X86_DEBUGCTL_BTS_OFF_USR	(1 << 10)
+
+/*
+ * A debug store configuration.
+ *
+ * We only support architectures that use 64bit fields.
+ */
+struct debug_store {
+	u64	bts_buffer_base;
+	u64	bts_index;
+	u64	bts_absolute_maximum;
+	u64	bts_interrupt_threshold;
+	u64	pebs_buffer_base;
+	u64	pebs_index;
+	u64	pebs_absolute_maximum;
+	u64	pebs_interrupt_threshold;
+	u64	pebs_event_reset[MAX_PEBS_EVENTS];
+};
+
+struct cpu_hw_events {
+	struct perf_event	*events[X86_PMC_IDX_MAX];
 	unsigned long		used_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
 	unsigned long		active_mask[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
 	unsigned long		interrupts;
 	int			enabled;
+	struct debug_store	*ds;
 };
 
 /*
@@ -44,25 +86,27 @@ struct x86_pmu {
 	int		(*handle_irq)(struct pt_regs *);
 	void		(*disable_all)(void);
 	void		(*enable_all)(void);
-	void		(*enable)(struct hw_perf_counter *, int);
-	void		(*disable)(struct hw_perf_counter *, int);
+	void		(*enable)(struct hw_perf_event *, int);
+	void		(*disable)(struct hw_perf_event *, int);
 	unsigned	eventsel;
 	unsigned	perfctr;
 	u64		(*event_map)(int);
 	u64		(*raw_event)(u64);
 	int		max_events;
-	int		num_counters;
-	int		num_counters_fixed;
-	int		counter_bits;
-	u64		counter_mask;
+	int		num_events;
+	int		num_events_fixed;
+	int		event_bits;
+	u64		event_mask;
 	int		apic;
 	u64		max_period;
 	u64		intel_ctrl;
+	void		(*enable_bts)(u64 config);
+	void		(*disable_bts)(void);
 };
 
 static struct x86_pmu x86_pmu __read_mostly;
 
-static DEFINE_PER_CPU(struct cpu_hw_counters, cpu_hw_counters) = {
+static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {
 	.enabled = 1,
 };
 
@@ -80,35 +124,35 @@ static const u64 p6_perfmon_event_map[] =
   [PERF_COUNT_HW_BUS_CYCLES]		= 0x0062,
 };
 
-static u64 p6_pmu_event_map(int event)
+static u64 p6_pmu_event_map(int hw_event)
 {
-	return p6_perfmon_event_map[event];
+	return p6_perfmon_event_map[hw_event];
 }
 
 /*
- * Counter setting that is specified not to count anything.
+ * Event setting that is specified not to count anything.
  * We use this to effectively disable a counter.
  *
  * L2_RQSTS with 0 MESI unit mask.
  */
-#define P6_NOP_COUNTER			0x0000002EULL
+#define P6_NOP_EVENT			0x0000002EULL
 
-static u64 p6_pmu_raw_event(u64 event)
+static u64 p6_pmu_raw_event(u64 hw_event)
 {
 #define P6_EVNTSEL_EVENT_MASK		0x000000FFULL
 #define P6_EVNTSEL_UNIT_MASK		0x0000FF00ULL
 #define P6_EVNTSEL_EDGE_MASK		0x00040000ULL
 #define P6_EVNTSEL_INV_MASK		0x00800000ULL
-#define P6_EVNTSEL_COUNTER_MASK		0xFF000000ULL
+#define P6_EVNTSEL_REG_MASK		0xFF000000ULL
 
 #define P6_EVNTSEL_MASK			\
 	(P6_EVNTSEL_EVENT_MASK |	\
 	 P6_EVNTSEL_UNIT_MASK  |	\
 	 P6_EVNTSEL_EDGE_MASK  |	\
 	 P6_EVNTSEL_INV_MASK   |	\
-	 P6_EVNTSEL_COUNTER_MASK)
+	 P6_EVNTSEL_REG_MASK)
 
-	return event & P6_EVNTSEL_MASK;
+	return hw_event & P6_EVNTSEL_MASK;
 }
 
 
@@ -126,16 +170,16 @@ static const u64 intel_perfmon_event_map[] =
   [PERF_COUNT_HW_BUS_CYCLES]		= 0x013c,
 };
 
-static u64 intel_pmu_event_map(int event)
+static u64 intel_pmu_event_map(int hw_event)
 {
-	return intel_perfmon_event_map[event];
+	return intel_perfmon_event_map[hw_event];
 }
 
 /*
- * Generalized hw caching related event table, filled
+ * Generalized hw caching related hw_event table, filled
  * in on a per model basis. A value of 0 means
- * 'not supported', -1 means 'event makes no sense on
- * this CPU', any other value means the raw event
+ * 'not supported', -1 means 'hw_event makes no sense on
+ * this CPU', any other value means the raw hw_event
  * ID.
  */
 
@@ -419,22 +463,22 @@ static const u64 atom_hw_cache_event_ids
  },
 };
 
-static u64 intel_pmu_raw_event(u64 event)
+static u64 intel_pmu_raw_event(u64 hw_event)
 {
 #define CORE_EVNTSEL_EVENT_MASK		0x000000FFULL
 #define CORE_EVNTSEL_UNIT_MASK		0x0000FF00ULL
 #define CORE_EVNTSEL_EDGE_MASK		0x00040000ULL
 #define CORE_EVNTSEL_INV_MASK		0x00800000ULL
-#define CORE_EVNTSEL_COUNTER_MASK	0xFF000000ULL
+#define CORE_EVNTSEL_REG_MASK	0xFF000000ULL
 
 #define CORE_EVNTSEL_MASK		\
 	(CORE_EVNTSEL_EVENT_MASK |	\
 	 CORE_EVNTSEL_UNIT_MASK  |	\
 	 CORE_EVNTSEL_EDGE_MASK  |	\
 	 CORE_EVNTSEL_INV_MASK  |	\
-	 CORE_EVNTSEL_COUNTER_MASK)
+	 CORE_EVNTSEL_REG_MASK)
 
-	return event & CORE_EVNTSEL_MASK;
+	return hw_event & CORE_EVNTSEL_MASK;
 }
 
 static const u64 amd_hw_cache_event_ids
@@ -541,52 +585,55 @@ static const u64 amd_perfmon_event_map[] =
   [PERF_COUNT_HW_BRANCH_MISSES]		= 0x00c5,
 };
 
-static u64 amd_pmu_event_map(int event)
+static u64 amd_pmu_event_map(int hw_event)
 {
-	return amd_perfmon_event_map[event];
+	return amd_perfmon_event_map[hw_event];
 }
 
-static u64 amd_pmu_raw_event(u64 event)
+static u64 amd_pmu_raw_event(u64 hw_event)
 {
 #define K7_EVNTSEL_EVENT_MASK	0x7000000FFULL
 #define K7_EVNTSEL_UNIT_MASK	0x00000FF00ULL
 #define K7_EVNTSEL_EDGE_MASK	0x000040000ULL
 #define K7_EVNTSEL_INV_MASK	0x000800000ULL
-#define K7_EVNTSEL_COUNTER_MASK	0x0FF000000ULL
+#define K7_EVNTSEL_REG_MASK	0x0FF000000ULL
 
 #define K7_EVNTSEL_MASK			\
 	(K7_EVNTSEL_EVENT_MASK |	\
 	 K7_EVNTSEL_UNIT_MASK  |	\
 	 K7_EVNTSEL_EDGE_MASK  |	\
 	 K7_EVNTSEL_INV_MASK   |	\
-	 K7_EVNTSEL_COUNTER_MASK)
+	 K7_EVNTSEL_REG_MASK)
 
-	return event & K7_EVNTSEL_MASK;
+	return hw_event & K7_EVNTSEL_MASK;
 }
 
 /*
- * Propagate counter elapsed time into the generic counter.
- * Can only be executed on the CPU where the counter is active.
+ * Propagate event elapsed time into the generic event.
+ * Can only be executed on the CPU where the event is active.
  * Returns the delta events processed.
  */
 static u64
-x86_perf_counter_update(struct perf_counter *counter,
-			struct hw_perf_counter *hwc, int idx)
+x86_perf_event_update(struct perf_event *event,
+			struct hw_perf_event *hwc, int idx)
 {
-	int shift = 64 - x86_pmu.counter_bits;
+	int shift = 64 - x86_pmu.event_bits;
 	u64 prev_raw_count, new_raw_count;
 	s64 delta;
 
+	if (idx == X86_PMC_IDX_FIXED_BTS)
+		return 0;
+
 	/*
-	 * Careful: an NMI might modify the previous counter value.
+	 * Careful: an NMI might modify the previous event value.
 	 *
 	 * Our tactic to handle this is to first atomically read and
 	 * exchange a new raw count - then add that new-prev delta
-	 * count to the generic counter atomically:
+	 * count to the generic event atomically:
 	 */
 again:
 	prev_raw_count = atomic64_read(&hwc->prev_count);
-	rdmsrl(hwc->counter_base + idx, new_raw_count);
+	rdmsrl(hwc->event_base + idx, new_raw_count);
 
 	if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count,
 					new_raw_count) != prev_raw_count)
@@ -595,7 +642,7 @@ again:
 	/*
 	 * Now we have the new raw value and have updated the prev
 	 * timestamp already. We can now calculate the elapsed delta
-	 * (counter-)time and add that to the generic counter.
+	 * (event-)time and add that to the generic event.
 	 *
 	 * Careful, not all hw sign-extends above the physical width
 	 * of the count.
@@ -603,13 +650,13 @@ again:
 	delta = (new_raw_count << shift) - (prev_raw_count << shift);
 	delta >>= shift;
 
-	atomic64_add(delta, &counter->count);
+	atomic64_add(delta, &event->count);
 	atomic64_sub(delta, &hwc->period_left);
 
 	return new_raw_count;
 }
 
-static atomic_t active_counters;
+static atomic_t active_events;
 static DEFINE_MUTEX(pmc_reserve_mutex);
 
 static bool reserve_pmc_hardware(void)
@@ -620,12 +667,12 @@ static bool reserve_pmc_hardware(void)
 	if (nmi_watchdog == NMI_LOCAL_APIC)
 		disable_lapic_nmi_watchdog();
 
-	for (i = 0; i < x86_pmu.num_counters; i++) {
+	for (i = 0; i < x86_pmu.num_events; i++) {
 		if (!reserve_perfctr_nmi(x86_pmu.perfctr + i))
 			goto perfctr_fail;
 	}
 
-	for (i = 0; i < x86_pmu.num_counters; i++) {
+	for (i = 0; i < x86_pmu.num_events; i++) {
 		if (!reserve_evntsel_nmi(x86_pmu.eventsel + i))
 			goto eventsel_fail;
 	}
@@ -638,7 +685,7 @@ eventsel_fail:
 	for (i--; i >= 0; i--)
 		release_evntsel_nmi(x86_pmu.eventsel + i);
 
-	i = x86_pmu.num_counters;
+	i = x86_pmu.num_events;
 
 perfctr_fail:
 	for (i--; i >= 0; i--)
@@ -656,7 +703,7 @@ static void release_pmc_hardware(void)
 #ifdef CONFIG_X86_LOCAL_APIC
 	int i;
 
-	for (i = 0; i < x86_pmu.num_counters; i++) {
+	for (i = 0; i < x86_pmu.num_events; i++) {
 		release_perfctr_nmi(x86_pmu.perfctr + i);
 		release_evntsel_nmi(x86_pmu.eventsel + i);
 	}
@@ -666,10 +713,110 @@ static void release_pmc_hardware(void)
 #endif
 }
 
-static void hw_perf_counter_destroy(struct perf_counter *counter)
+static inline bool bts_available(void)
+{
+	return x86_pmu.enable_bts != NULL;
+}
+
+static inline void init_debug_store_on_cpu(int cpu)
+{
+	struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds;
+
+	if (!ds)
+		return;
+
+	wrmsr_on_cpu(cpu, MSR_IA32_DS_AREA,
+		     (u32)((u64)(unsigned long)ds),
+		     (u32)((u64)(unsigned long)ds >> 32));
+}
+
+static inline void fini_debug_store_on_cpu(int cpu)
+{
+	if (!per_cpu(cpu_hw_events, cpu).ds)
+		return;
+
+	wrmsr_on_cpu(cpu, MSR_IA32_DS_AREA, 0, 0);
+}
+
+static void release_bts_hardware(void)
+{
+	int cpu;
+
+	if (!bts_available())
+		return;
+
+	get_online_cpus();
+
+	for_each_online_cpu(cpu)
+		fini_debug_store_on_cpu(cpu);
+
+	for_each_possible_cpu(cpu) {
+		struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds;
+
+		if (!ds)
+			continue;
+
+		per_cpu(cpu_hw_events, cpu).ds = NULL;
+
+		kfree((void *)(unsigned long)ds->bts_buffer_base);
+		kfree(ds);
+	}
+
+	put_online_cpus();
+}
+
+static int reserve_bts_hardware(void)
 {
-	if (atomic_dec_and_mutex_lock(&active_counters, &pmc_reserve_mutex)) {
+	int cpu, err = 0;
+
+	if (!bts_available())
+		return 0;
+
+	get_online_cpus();
+
+	for_each_possible_cpu(cpu) {
+		struct debug_store *ds;
+		void *buffer;
+
+		err = -ENOMEM;
+		buffer = kzalloc(BTS_BUFFER_SIZE, GFP_KERNEL);
+		if (unlikely(!buffer))
+			break;
+
+		ds = kzalloc(sizeof(*ds), GFP_KERNEL);
+		if (unlikely(!ds)) {
+			kfree(buffer);
+			break;
+		}
+
+		ds->bts_buffer_base = (u64)(unsigned long)buffer;
+		ds->bts_index = ds->bts_buffer_base;
+		ds->bts_absolute_maximum =
+			ds->bts_buffer_base + BTS_BUFFER_SIZE;
+		ds->bts_interrupt_threshold =
+			ds->bts_absolute_maximum - BTS_OVFL_TH;
+
+		per_cpu(cpu_hw_events, cpu).ds = ds;
+		err = 0;
+	}
+
+	if (err)
+		release_bts_hardware();
+	else {
+		for_each_online_cpu(cpu)
+			init_debug_store_on_cpu(cpu);
+	}
+
+	put_online_cpus();
+
+	return err;
+}
+
+static void hw_perf_event_destroy(struct perf_event *event)
+{
+	if (atomic_dec_and_mutex_lock(&active_events, &pmc_reserve_mutex)) {
 		release_pmc_hardware();
+		release_bts_hardware();
 		mutex_unlock(&pmc_reserve_mutex);
 	}
 }
@@ -680,7 +827,7 @@ static inline int x86_pmu_initialized(void)
 }
 
 static inline int
-set_ext_hw_attr(struct hw_perf_counter *hwc, struct perf_counter_attr *attr)
+set_ext_hw_attr(struct hw_perf_event *hwc, struct perf_event_attr *attr)
 {
 	unsigned int cache_type, cache_op, cache_result;
 	u64 config, val;
@@ -712,13 +859,49 @@ set_ext_hw_attr(struct hw_perf_counter *hwc, struct perf_counter_attr *attr)
 	return 0;
 }
 
+static void intel_pmu_enable_bts(u64 config)
+{
+	unsigned long debugctlmsr;
+
+	debugctlmsr = get_debugctlmsr();
+
+	debugctlmsr |= X86_DEBUGCTL_TR;
+	debugctlmsr |= X86_DEBUGCTL_BTS;
+	debugctlmsr |= X86_DEBUGCTL_BTINT;
+
+	if (!(config & ARCH_PERFMON_EVENTSEL_OS))
+		debugctlmsr |= X86_DEBUGCTL_BTS_OFF_OS;
+
+	if (!(config & ARCH_PERFMON_EVENTSEL_USR))
+		debugctlmsr |= X86_DEBUGCTL_BTS_OFF_USR;
+
+	update_debugctlmsr(debugctlmsr);
+}
+
+static void intel_pmu_disable_bts(void)
+{
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	unsigned long debugctlmsr;
+
+	if (!cpuc->ds)
+		return;
+
+	debugctlmsr = get_debugctlmsr();
+
+	debugctlmsr &=
+		~(X86_DEBUGCTL_TR | X86_DEBUGCTL_BTS | X86_DEBUGCTL_BTINT |
+		  X86_DEBUGCTL_BTS_OFF_OS | X86_DEBUGCTL_BTS_OFF_USR);
+
+	update_debugctlmsr(debugctlmsr);
+}
+
 /*
  * Setup the hardware configuration for a given attr_type
  */
-static int __hw_perf_counter_init(struct perf_counter *counter)
+static int __hw_perf_event_init(struct perf_event *event)
 {
-	struct perf_counter_attr *attr = &counter->attr;
-	struct hw_perf_counter *hwc = &counter->hw;
+	struct perf_event_attr *attr = &event->attr;
+	struct hw_perf_event *hwc = &event->hw;
 	u64 config;
 	int err;
 
@@ -726,17 +909,23 @@ static int __hw_perf_counter_init(struct perf_counter *counter)
 		return -ENODEV;
 
 	err = 0;
-	if (!atomic_inc_not_zero(&active_counters)) {
+	if (!atomic_inc_not_zero(&active_events)) {
 		mutex_lock(&pmc_reserve_mutex);
-		if (atomic_read(&active_counters) == 0 && !reserve_pmc_hardware())
-			err = -EBUSY;
-		else
-			atomic_inc(&active_counters);
+		if (atomic_read(&active_events) == 0) {
+			if (!reserve_pmc_hardware())
+				err = -EBUSY;
+			else
+				err = reserve_bts_hardware();
+		}
+		if (!err)
+			atomic_inc(&active_events);
 		mutex_unlock(&pmc_reserve_mutex);
 	}
 	if (err)
 		return err;
 
+	event->destroy = hw_perf_event_destroy;
+
 	/*
 	 * Generate PMC IRQs:
 	 * (keep 'enabled' bit clear for now)
@@ -759,17 +948,15 @@ static int __hw_perf_counter_init(struct perf_counter *counter)
 		/*
 		 * If we have a PMU initialized but no APIC
 		 * interrupts, we cannot sample hardware
-		 * counters (user-space has to fall back and
-		 * sample via a hrtimer based software counter):
+		 * events (user-space has to fall back and
+		 * sample via a hrtimer based software event):
 		 */
 		if (!x86_pmu.apic)
 			return -EOPNOTSUPP;
 	}
 
-	counter->destroy = hw_perf_counter_destroy;
-
 	/*
-	 * Raw event type provide the config in the event structure
+	 * Raw hw_event type provide the config in the hw_event structure
 	 */
 	if (attr->type == PERF_TYPE_RAW) {
 		hwc->config |= x86_pmu.raw_event(attr->config);
@@ -793,6 +980,20 @@ static int __hw_perf_counter_init(struct perf_counter *counter)
 	if (config == -1LL)
 		return -EINVAL;
 
+	/*
+	 * Branch tracing:
+	 */
+	if ((attr->config == PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
+	    (hwc->sample_period == 1)) {
+		/* BTS is not supported by this architecture. */
+		if (!bts_available())
+			return -EOPNOTSUPP;
+
+		/* BTS is currently only allowed for user-mode. */
+		if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
+			return -EOPNOTSUPP;
+	}
+
 	hwc->config |= config;
 
 	return 0;
@@ -800,7 +1001,7 @@ static int __hw_perf_counter_init(struct perf_counter *counter)
 
 static void p6_pmu_disable_all(void)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	u64 val;
 
 	if (!cpuc->enabled)
@@ -817,12 +1018,23 @@ static void p6_pmu_disable_all(void)
 
 static void intel_pmu_disable_all(void)
 {
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+
+	if (!cpuc->enabled)
+		return;
+
+	cpuc->enabled = 0;
+	barrier();
+
 	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
+
+	if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask))
+		intel_pmu_disable_bts();
 }
 
 static void amd_pmu_disable_all(void)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	int idx;
 
 	if (!cpuc->enabled)
@@ -831,12 +1043,12 @@ static void amd_pmu_disable_all(void)
 	cpuc->enabled = 0;
 	/*
 	 * ensure we write the disable before we start disabling the
-	 * counters proper, so that amd_pmu_enable_counter() does the
+	 * events proper, so that amd_pmu_enable_event() does the
 	 * right thing.
 	 */
 	barrier();
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
 		u64 val;
 
 		if (!test_bit(idx, cpuc->active_mask))
@@ -858,7 +1070,7 @@ void hw_perf_disable(void)
 
 static void p6_pmu_enable_all(void)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	unsigned long val;
 
 	if (cpuc->enabled)
@@ -875,12 +1087,30 @@ static void p6_pmu_enable_all(void)
 
 static void intel_pmu_enable_all(void)
 {
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+
+	if (cpuc->enabled)
+		return;
+
+	cpuc->enabled = 1;
+	barrier();
+
 	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, x86_pmu.intel_ctrl);
+
+	if (test_bit(X86_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
+		struct perf_event *event =
+			cpuc->events[X86_PMC_IDX_FIXED_BTS];
+
+		if (WARN_ON_ONCE(!event))
+			return;
+
+		intel_pmu_enable_bts(event->hw.config);
+	}
 }
 
 static void amd_pmu_enable_all(void)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	int idx;
 
 	if (cpuc->enabled)
@@ -889,14 +1119,14 @@ static void amd_pmu_enable_all(void)
 	cpuc->enabled = 1;
 	barrier();
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
-		struct perf_counter *counter = cpuc->counters[idx];
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
+		struct perf_event *event = cpuc->events[idx];
 		u64 val;
 
 		if (!test_bit(idx, cpuc->active_mask))
 			continue;
 
-		val = counter->hw.config;
+		val = event->hw.config;
 		val |= ARCH_PERFMON_EVENTSEL0_ENABLE;
 		wrmsrl(MSR_K7_EVNTSEL0 + idx, val);
 	}
@@ -923,19 +1153,19 @@ static inline void intel_pmu_ack_status(u64 ack)
 	wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
 }
 
-static inline void x86_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
+static inline void x86_pmu_enable_event(struct hw_perf_event *hwc, int idx)
 {
 	(void)checking_wrmsrl(hwc->config_base + idx,
 			      hwc->config | ARCH_PERFMON_EVENTSEL0_ENABLE);
 }
 
-static inline void x86_pmu_disable_counter(struct hw_perf_counter *hwc, int idx)
+static inline void x86_pmu_disable_event(struct hw_perf_event *hwc, int idx)
 {
 	(void)checking_wrmsrl(hwc->config_base + idx, hwc->config);
 }
 
 static inline void
-intel_pmu_disable_fixed(struct hw_perf_counter *hwc, int __idx)
+intel_pmu_disable_fixed(struct hw_perf_event *hwc, int __idx)
 {
 	int idx = __idx - X86_PMC_IDX_FIXED;
 	u64 ctrl_val, mask;
@@ -948,10 +1178,10 @@ intel_pmu_disable_fixed(struct hw_perf_counter *hwc, int __idx)
 }
 
 static inline void
-p6_pmu_disable_counter(struct hw_perf_counter *hwc, int idx)
+p6_pmu_disable_event(struct hw_perf_event *hwc, int idx)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
-	u64 val = P6_NOP_COUNTER;
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	u64 val = P6_NOP_EVENT;
 
 	if (cpuc->enabled)
 		val |= ARCH_PERFMON_EVENTSEL0_ENABLE;
@@ -960,36 +1190,44 @@ p6_pmu_disable_counter(struct hw_perf_counter *hwc, int idx)
 }
 
 static inline void
-intel_pmu_disable_counter(struct hw_perf_counter *hwc, int idx)
+intel_pmu_disable_event(struct hw_perf_event *hwc, int idx)
 {
+	if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) {
+		intel_pmu_disable_bts();
+		return;
+	}
+
 	if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
 		intel_pmu_disable_fixed(hwc, idx);
 		return;
 	}
 
-	x86_pmu_disable_counter(hwc, idx);
+	x86_pmu_disable_event(hwc, idx);
 }
 
 static inline void
-amd_pmu_disable_counter(struct hw_perf_counter *hwc, int idx)
+amd_pmu_disable_event(struct hw_perf_event *hwc, int idx)
 {
-	x86_pmu_disable_counter(hwc, idx);
+	x86_pmu_disable_event(hwc, idx);
 }
 
-static DEFINE_PER_CPU(u64, prev_left[X86_PMC_IDX_MAX]);
+static DEFINE_PER_CPU(u64 [X86_PMC_IDX_MAX], pmc_prev_left);
 
 /*
  * Set the next IRQ period, based on the hwc->period_left value.
- * To be called with the counter disabled in hw:
+ * To be called with the event disabled in hw:
  */
 static int
-x86_perf_counter_set_period(struct perf_counter *counter,
-			     struct hw_perf_counter *hwc, int idx)
+x86_perf_event_set_period(struct perf_event *event,
+			     struct hw_perf_event *hwc, int idx)
 {
 	s64 left = atomic64_read(&hwc->period_left);
 	s64 period = hwc->sample_period;
 	int err, ret = 0;
 
+	if (idx == X86_PMC_IDX_FIXED_BTS)
+		return 0;
+
 	/*
 	 * If we are way outside a reasoable range then just skip forward:
 	 */
@@ -1007,7 +1245,7 @@ x86_perf_counter_set_period(struct perf_counter *counter,
 		ret = 1;
 	}
 	/*
-	 * Quirk: certain CPUs dont like it if just 1 event is left:
+	 * Quirk: certain CPUs dont like it if just 1 hw_event is left:
 	 */
 	if (unlikely(left < 2))
 		left = 2;
@@ -1015,24 +1253,24 @@ x86_perf_counter_set_period(struct perf_counter *counter,
 	if (left > x86_pmu.max_period)
 		left = x86_pmu.max_period;
 
-	per_cpu(prev_left[idx], smp_processor_id()) = left;
+	per_cpu(pmc_prev_left[idx], smp_processor_id()) = left;
 
 	/*
-	 * The hw counter starts counting from this counter offset,
+	 * The hw event starts counting from this event offset,
 	 * mark it to be able to extra future deltas:
 	 */
 	atomic64_set(&hwc->prev_count, (u64)-left);
 
-	err = checking_wrmsrl(hwc->counter_base + idx,
-			     (u64)(-left) & x86_pmu.counter_mask);
+	err = checking_wrmsrl(hwc->event_base + idx,
+			     (u64)(-left) & x86_pmu.event_mask);
 
-	perf_counter_update_userpage(counter);
+	perf_event_update_userpage(event);
 
 	return ret;
 }
 
 static inline void
-intel_pmu_enable_fixed(struct hw_perf_counter *hwc, int __idx)
+intel_pmu_enable_fixed(struct hw_perf_event *hwc, int __idx)
 {
 	int idx = __idx - X86_PMC_IDX_FIXED;
 	u64 ctrl_val, bits, mask;
@@ -1057,9 +1295,9 @@ intel_pmu_enable_fixed(struct hw_perf_counter *hwc, int __idx)
 	err = checking_wrmsrl(hwc->config_base, ctrl_val);
 }
 
-static void p6_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
+static void p6_pmu_enable_event(struct hw_perf_event *hwc, int idx)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	u64 val;
 
 	val = hwc->config;
@@ -1070,128 +1308,149 @@ static void p6_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
 }
 
 
-static void intel_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
+static void intel_pmu_enable_event(struct hw_perf_event *hwc, int idx)
 {
+	if (unlikely(idx == X86_PMC_IDX_FIXED_BTS)) {
+		if (!__get_cpu_var(cpu_hw_events).enabled)
+			return;
+
+		intel_pmu_enable_bts(hwc->config);
+		return;
+	}
+
 	if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
 		intel_pmu_enable_fixed(hwc, idx);
 		return;
 	}
 
-	x86_pmu_enable_counter(hwc, idx);
+	x86_pmu_enable_event(hwc, idx);
 }
 
-static void amd_pmu_enable_counter(struct hw_perf_counter *hwc, int idx)
+static void amd_pmu_enable_event(struct hw_perf_event *hwc, int idx)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 
 	if (cpuc->enabled)
-		x86_pmu_enable_counter(hwc, idx);
+		x86_pmu_enable_event(hwc, idx);
 }
 
 static int
-fixed_mode_idx(struct perf_counter *counter, struct hw_perf_counter *hwc)
+fixed_mode_idx(struct perf_event *event, struct hw_perf_event *hwc)
 {
-	unsigned int event;
+	unsigned int hw_event;
 
-	if (!x86_pmu.num_counters_fixed)
-		return -1;
+	hw_event = hwc->config & ARCH_PERFMON_EVENT_MASK;
+
+	if (unlikely((hw_event ==
+		      x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)) &&
+		     (hwc->sample_period == 1)))
+		return X86_PMC_IDX_FIXED_BTS;
 
-	event = hwc->config & ARCH_PERFMON_EVENT_MASK;
+	if (!x86_pmu.num_events_fixed)
+		return -1;
 
-	if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
+	if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_INSTRUCTIONS)))
 		return X86_PMC_IDX_FIXED_INSTRUCTIONS;
-	if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES)))
+	if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_CPU_CYCLES)))
 		return X86_PMC_IDX_FIXED_CPU_CYCLES;
-	if (unlikely(event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES)))
+	if (unlikely(hw_event == x86_pmu.event_map(PERF_COUNT_HW_BUS_CYCLES)))
 		return X86_PMC_IDX_FIXED_BUS_CYCLES;
 
 	return -1;
 }
 
 /*
- * Find a PMC slot for the freshly enabled / scheduled in counter:
+ * Find a PMC slot for the freshly enabled / scheduled in event:
  */
-static int x86_pmu_enable(struct perf_counter *counter)
+static int x86_pmu_enable(struct perf_event *event)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
-	struct hw_perf_counter *hwc = &counter->hw;
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	struct hw_perf_event *hwc = &event->hw;
 	int idx;
 
-	idx = fixed_mode_idx(counter, hwc);
-	if (idx >= 0) {
+	idx = fixed_mode_idx(event, hwc);
+	if (idx == X86_PMC_IDX_FIXED_BTS) {
+		/* BTS is already occupied. */
+		if (test_and_set_bit(idx, cpuc->used_mask))
+			return -EAGAIN;
+
+		hwc->config_base	= 0;
+		hwc->event_base	= 0;
+		hwc->idx		= idx;
+	} else if (idx >= 0) {
 		/*
-		 * Try to get the fixed counter, if that is already taken
-		 * then try to get a generic counter:
+		 * Try to get the fixed event, if that is already taken
+		 * then try to get a generic event:
 		 */
 		if (test_and_set_bit(idx, cpuc->used_mask))
 			goto try_generic;
 
 		hwc->config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL;
 		/*
-		 * We set it so that counter_base + idx in wrmsr/rdmsr maps to
+		 * We set it so that event_base + idx in wrmsr/rdmsr maps to
 		 * MSR_ARCH_PERFMON_FIXED_CTR0 ... CTR2:
 		 */
-		hwc->counter_base =
+		hwc->event_base =
 			MSR_ARCH_PERFMON_FIXED_CTR0 - X86_PMC_IDX_FIXED;
 		hwc->idx = idx;
 	} else {
 		idx = hwc->idx;
-		/* Try to get the previous generic counter again */
+		/* Try to get the previous generic event again */
 		if (test_and_set_bit(idx, cpuc->used_mask)) {
 try_generic:
 			idx = find_first_zero_bit(cpuc->used_mask,
-						  x86_pmu.num_counters);
-			if (idx == x86_pmu.num_counters)
+						  x86_pmu.num_events);
+			if (idx == x86_pmu.num_events)
 				return -EAGAIN;
 
 			set_bit(idx, cpuc->used_mask);
 			hwc->idx = idx;
 		}
 		hwc->config_base  = x86_pmu.eventsel;
-		hwc->counter_base = x86_pmu.perfctr;
+		hwc->event_base = x86_pmu.perfctr;
 	}
 
-	perf_counters_lapic_init();
+	perf_events_lapic_init();
 
 	x86_pmu.disable(hwc, idx);
 
-	cpuc->counters[idx] = counter;
+	cpuc->events[idx] = event;
 	set_bit(idx, cpuc->active_mask);
 
-	x86_perf_counter_set_period(counter, hwc, idx);
+	x86_perf_event_set_period(event, hwc, idx);
 	x86_pmu.enable(hwc, idx);
 
-	perf_counter_update_userpage(counter);
+	perf_event_update_userpage(event);
 
 	return 0;
 }
 
-static void x86_pmu_unthrottle(struct perf_counter *counter)
+static void x86_pmu_unthrottle(struct perf_event *event)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
-	struct hw_perf_counter *hwc = &counter->hw;
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	struct hw_perf_event *hwc = &event->hw;
 
 	if (WARN_ON_ONCE(hwc->idx >= X86_PMC_IDX_MAX ||
-				cpuc->counters[hwc->idx] != counter))
+				cpuc->events[hwc->idx] != event))
 		return;
 
 	x86_pmu.enable(hwc, hwc->idx);
 }
 
-void perf_counter_print_debug(void)
+void perf_event_print_debug(void)
 {
 	u64 ctrl, status, overflow, pmc_ctrl, pmc_count, prev_left, fixed;
-	struct cpu_hw_counters *cpuc;
+	struct cpu_hw_events *cpuc;
 	unsigned long flags;
 	int cpu, idx;
 
-	if (!x86_pmu.num_counters)
+	if (!x86_pmu.num_events)
 		return;
 
 	local_irq_save(flags);
 
 	cpu = smp_processor_id();
-	cpuc = &per_cpu(cpu_hw_counters, cpu);
+	cpuc = &per_cpu(cpu_hw_events, cpu);
 
 	if (x86_pmu.version >= 2) {
 		rdmsrl(MSR_CORE_PERF_GLOBAL_CTRL, ctrl);
@@ -1207,11 +1466,11 @@ void perf_counter_print_debug(void)
 	}
 	pr_info("CPU#%d: used:       %016llx\n", cpu, *(u64 *)cpuc->used_mask);
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
 		rdmsrl(x86_pmu.eventsel + idx, pmc_ctrl);
 		rdmsrl(x86_pmu.perfctr  + idx, pmc_count);
 
-		prev_left = per_cpu(prev_left[idx], cpu);
+		prev_left = per_cpu(pmc_prev_left[idx], cpu);
 
 		pr_info("CPU#%d:   gen-PMC%d ctrl:  %016llx\n",
 			cpu, idx, pmc_ctrl);
@@ -1220,7 +1479,7 @@ void perf_counter_print_debug(void)
 		pr_info("CPU#%d:   gen-PMC%d left:  %016llx\n",
 			cpu, idx, prev_left);
 	}
-	for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events_fixed; idx++) {
 		rdmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, pmc_count);
 
 		pr_info("CPU#%d: fixed-PMC%d count: %016llx\n",
@@ -1229,10 +1488,69 @@ void perf_counter_print_debug(void)
 	local_irq_restore(flags);
 }
 
-static void x86_pmu_disable(struct perf_counter *counter)
+static void intel_pmu_drain_bts_buffer(struct cpu_hw_events *cpuc)
 {
-	struct cpu_hw_counters *cpuc = &__get_cpu_var(cpu_hw_counters);
-	struct hw_perf_counter *hwc = &counter->hw;
+	struct debug_store *ds = cpuc->ds;
+	struct bts_record {
+		u64	from;
+		u64	to;
+		u64	flags;
+	};
+	struct perf_event *event = cpuc->events[X86_PMC_IDX_FIXED_BTS];
+	struct bts_record *at, *top;
+	struct perf_output_handle handle;
+	struct perf_event_header header;
+	struct perf_sample_data data;
+	struct pt_regs regs;
+
+	if (!event)
+		return;
+
+	if (!ds)
+		return;
+
+	at  = (struct bts_record *)(unsigned long)ds->bts_buffer_base;
+	top = (struct bts_record *)(unsigned long)ds->bts_index;
+
+	if (top <= at)
+		return;
+
+	ds->bts_index = ds->bts_buffer_base;
+
+
+	data.period	= event->hw.last_period;
+	data.addr	= 0;
+	regs.ip		= 0;
+
+	/*
+	 * Prepare a generic sample, i.e. fill in the invariant fields.
+	 * We will overwrite the from and to address before we output
+	 * the sample.
+	 */
+	perf_prepare_sample(&header, &data, event, &regs);
+
+	if (perf_output_begin(&handle, event,
+			      header.size * (top - at), 1, 1))
+		return;
+
+	for (; at < top; at++) {
+		data.ip		= at->from;
+		data.addr	= at->to;
+
+		perf_output_sample(&handle, &header, &data, event);
+	}
+
+	perf_output_end(&handle);
+
+	/* There's new data available. */
+	event->hw.interrupts++;
+	event->pending_kill = POLL_IN;
+}
+
+static void x86_pmu_disable(struct perf_event *event)
+{
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	struct hw_perf_event *hwc = &event->hw;
 	int idx = hwc->idx;
 
 	/*
@@ -1244,59 +1562,67 @@ static void x86_pmu_disable(struct perf_counter *counter)
 
 	/*
 	 * Make sure the cleared pointer becomes visible before we
-	 * (potentially) free the counter:
+	 * (potentially) free the event:
 	 */
 	barrier();
 
 	/*
-	 * Drain the remaining delta count out of a counter
+	 * Drain the remaining delta count out of a event
 	 * that we are disabling:
 	 */
-	x86_perf_counter_update(counter, hwc, idx);
-	cpuc->counters[idx] = NULL;
+	x86_perf_event_update(event, hwc, idx);
+
+	/* Drain the remaining BTS records. */
+	if (unlikely(idx == X86_PMC_IDX_FIXED_BTS))
+		intel_pmu_drain_bts_buffer(cpuc);
+
+	cpuc->events[idx] = NULL;
 	clear_bit(idx, cpuc->used_mask);
 
-	perf_counter_update_userpage(counter);
+	perf_event_update_userpage(event);
 }
 
 /*
- * Save and restart an expired counter. Called by NMI contexts,
- * so it has to be careful about preempting normal counter ops:
+ * Save and restart an expired event. Called by NMI contexts,
+ * so it has to be careful about preempting normal event ops:
  */
-static int intel_pmu_save_and_restart(struct perf_counter *counter)
+static int intel_pmu_save_and_restart(struct perf_event *event)
 {
-	struct hw_perf_counter *hwc = &counter->hw;
+	struct hw_perf_event *hwc = &event->hw;
 	int idx = hwc->idx;
 	int ret;
 
-	x86_perf_counter_update(counter, hwc, idx);
-	ret = x86_perf_counter_set_period(counter, hwc, idx);
+	x86_perf_event_update(event, hwc, idx);
+	ret = x86_perf_event_set_period(event, hwc, idx);
 
-	if (counter->state == PERF_COUNTER_STATE_ACTIVE)
-		intel_pmu_enable_counter(hwc, idx);
+	if (event->state == PERF_EVENT_STATE_ACTIVE)
+		intel_pmu_enable_event(hwc, idx);
 
 	return ret;
 }
 
 static void intel_pmu_reset(void)
 {
+	struct debug_store *ds = __get_cpu_var(cpu_hw_events).ds;
 	unsigned long flags;
 	int idx;
 
-	if (!x86_pmu.num_counters)
+	if (!x86_pmu.num_events)
 		return;
 
 	local_irq_save(flags);
 
 	printk("clearing PMU state on CPU#%d\n", smp_processor_id());
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
 		checking_wrmsrl(x86_pmu.eventsel + idx, 0ull);
 		checking_wrmsrl(x86_pmu.perfctr  + idx, 0ull);
 	}
-	for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events_fixed; idx++) {
 		checking_wrmsrl(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
 	}
+	if (ds)
+		ds->bts_index = ds->bts_buffer_base;
 
 	local_irq_restore(flags);
 }
@@ -1304,39 +1630,38 @@ static void intel_pmu_reset(void)
 static int p6_pmu_handle_irq(struct pt_regs *regs)
 {
 	struct perf_sample_data data;
-	struct cpu_hw_counters *cpuc;
-	struct perf_counter *counter;
-	struct hw_perf_counter *hwc;
+	struct cpu_hw_events *cpuc;
+	struct perf_event *event;
+	struct hw_perf_event *hwc;
 	int idx, handled = 0;
 	u64 val;
 
-	data.regs = regs;
 	data.addr = 0;
 
-	cpuc = &__get_cpu_var(cpu_hw_counters);
+	cpuc = &__get_cpu_var(cpu_hw_events);
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
 		if (!test_bit(idx, cpuc->active_mask))
 			continue;
 
-		counter = cpuc->counters[idx];
-		hwc = &counter->hw;
+		event = cpuc->events[idx];
+		hwc = &event->hw;
 
-		val = x86_perf_counter_update(counter, hwc, idx);
-		if (val & (1ULL << (x86_pmu.counter_bits - 1)))
+		val = x86_perf_event_update(event, hwc, idx);
+		if (val & (1ULL << (x86_pmu.event_bits - 1)))
 			continue;
 
 		/*
-		 * counter overflow
+		 * event overflow
 		 */
 		handled		= 1;
-		data.period	= counter->hw.last_period;
+		data.period	= event->hw.last_period;
 
-		if (!x86_perf_counter_set_period(counter, hwc, idx))
+		if (!x86_perf_event_set_period(event, hwc, idx))
 			continue;
 
-		if (perf_counter_overflow(counter, 1, &data))
-			p6_pmu_disable_counter(hwc, idx);
+		if (perf_event_overflow(event, 1, &data, regs))
+			p6_pmu_disable_event(hwc, idx);
 	}
 
 	if (handled)
@@ -1352,16 +1677,16 @@ static int p6_pmu_handle_irq(struct pt_regs *regs)
 static int intel_pmu_handle_irq(struct pt_regs *regs)
 {
 	struct perf_sample_data data;
-	struct cpu_hw_counters *cpuc;
+	struct cpu_hw_events *cpuc;
 	int bit, loops;
 	u64 ack, status;
 
-	data.regs = regs;
 	data.addr = 0;
 
-	cpuc = &__get_cpu_var(cpu_hw_counters);
+	cpuc = &__get_cpu_var(cpu_hw_events);
 
 	perf_disable();
+	intel_pmu_drain_bts_buffer(cpuc);
 	status = intel_pmu_get_status();
 	if (!status) {
 		perf_enable();
@@ -1371,8 +1696,8 @@ static int intel_pmu_handle_irq(struct pt_regs *regs)
 	loops = 0;
 again:
 	if (++loops > 100) {
-		WARN_ONCE(1, "perfcounters: irq loop stuck!\n");
-		perf_counter_print_debug();
+		WARN_ONCE(1, "perfevents: irq loop stuck!\n");
+		perf_event_print_debug();
 		intel_pmu_reset();
 		perf_enable();
 		return 1;
@@ -1381,19 +1706,19 @@ again:
 	inc_irq_stat(apic_perf_irqs);
 	ack = status;
 	for_each_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
-		struct perf_counter *counter = cpuc->counters[bit];
+		struct perf_event *event = cpuc->events[bit];
 
 		clear_bit(bit, (unsigned long *) &status);
 		if (!test_bit(bit, cpuc->active_mask))
 			continue;
 
-		if (!intel_pmu_save_and_restart(counter))
+		if (!intel_pmu_save_and_restart(event))
 			continue;
 
-		data.period = counter->hw.last_period;
+		data.period = event->hw.last_period;
 
-		if (perf_counter_overflow(counter, 1, &data))
-			intel_pmu_disable_counter(&counter->hw, bit);
+		if (perf_event_overflow(event, 1, &data, regs))
+			intel_pmu_disable_event(&event->hw, bit);
 	}
 
 	intel_pmu_ack_status(ack);
@@ -1413,39 +1738,38 @@ again:
 static int amd_pmu_handle_irq(struct pt_regs *regs)
 {
 	struct perf_sample_data data;
-	struct cpu_hw_counters *cpuc;
-	struct perf_counter *counter;
-	struct hw_perf_counter *hwc;
+	struct cpu_hw_events *cpuc;
+	struct perf_event *event;
+	struct hw_perf_event *hwc;
 	int idx, handled = 0;
 	u64 val;
 
-	data.regs = regs;
 	data.addr = 0;
 
-	cpuc = &__get_cpu_var(cpu_hw_counters);
+	cpuc = &__get_cpu_var(cpu_hw_events);
 
-	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
+	for (idx = 0; idx < x86_pmu.num_events; idx++) {
 		if (!test_bit(idx, cpuc->active_mask))
 			continue;
 
-		counter = cpuc->counters[idx];
-		hwc = &counter->hw;
+		event = cpuc->events[idx];
+		hwc = &event->hw;
 
-		val = x86_perf_counter_update(counter, hwc, idx);
-		if (val & (1ULL << (x86_pmu.counter_bits - 1)))
+		val = x86_perf_event_update(event, hwc, idx);
+		if (val & (1ULL << (x86_pmu.event_bits - 1)))
 			continue;
 
 		/*
-		 * counter overflow
+		 * event overflow
 		 */
 		handled		= 1;
-		data.period	= counter->hw.last_period;
+		data.period	= event->hw.last_period;
 
-		if (!x86_perf_counter_set_period(counter, hwc, idx))
+		if (!x86_perf_event_set_period(event, hwc, idx))
 			continue;
 
-		if (perf_counter_overflow(counter, 1, &data))
-			amd_pmu_disable_counter(hwc, idx);
+		if (perf_event_overflow(event, 1, &data, regs))
+			amd_pmu_disable_event(hwc, idx);
 	}
 
 	if (handled)
@@ -1459,18 +1783,21 @@ void smp_perf_pending_interrupt(struct pt_regs *regs)
 	irq_enter();
 	ack_APIC_irq();
 	inc_irq_stat(apic_pending_irqs);
-	perf_counter_do_pending();
+	perf_event_do_pending();
 	irq_exit();
 }
 
-void set_perf_counter_pending(void)
+void set_perf_event_pending(void)
 {
 #ifdef CONFIG_X86_LOCAL_APIC
+	if (!x86_pmu.apic || !x86_pmu_initialized())
+		return;
+
 	apic->send_IPI_self(LOCAL_PENDING_VECTOR);
 #endif
 }
 
-void perf_counters_lapic_init(void)
+void perf_events_lapic_init(void)
 {
 #ifdef CONFIG_X86_LOCAL_APIC
 	if (!x86_pmu.apic || !x86_pmu_initialized())
@@ -1484,13 +1811,13 @@ void perf_counters_lapic_init(void)
 }
 
 static int __kprobes
-perf_counter_nmi_handler(struct notifier_block *self,
+perf_event_nmi_handler(struct notifier_block *self,
 			 unsigned long cmd, void *__args)
 {
 	struct die_args *args = __args;
 	struct pt_regs *regs;
 
-	if (!atomic_read(&active_counters))
+	if (!atomic_read(&active_events))
 		return NOTIFY_DONE;
 
 	switch (cmd) {
@@ -1509,7 +1836,7 @@ perf_counter_nmi_handler(struct notifier_block *self,
 #endif
 	/*
 	 * Can't rely on the handled return value to say it was our NMI, two
-	 * counters could trigger 'simultaneously' raising two back-to-back NMIs.
+	 * events could trigger 'simultaneously' raising two back-to-back NMIs.
 	 *
 	 * If the first NMI handles both, the latter will be empty and daze
 	 * the CPU.
@@ -1519,8 +1846,8 @@ perf_counter_nmi_handler(struct notifier_block *self,
 	return NOTIFY_STOP;
 }
 
-static __read_mostly struct notifier_block perf_counter_nmi_notifier = {
-	.notifier_call		= perf_counter_nmi_handler,
+static __read_mostly struct notifier_block perf_event_nmi_notifier = {
+	.notifier_call		= perf_event_nmi_handler,
 	.next			= NULL,
 	.priority		= 1
 };
@@ -1530,8 +1857,8 @@ static struct x86_pmu p6_pmu = {
 	.handle_irq		= p6_pmu_handle_irq,
 	.disable_all		= p6_pmu_disable_all,
 	.enable_all		= p6_pmu_enable_all,
-	.enable			= p6_pmu_enable_counter,
-	.disable		= p6_pmu_disable_counter,
+	.enable			= p6_pmu_enable_event,
+	.disable		= p6_pmu_disable_event,
 	.eventsel		= MSR_P6_EVNTSEL0,
 	.perfctr		= MSR_P6_PERFCTR0,
 	.event_map		= p6_pmu_event_map,
@@ -1540,16 +1867,16 @@ static struct x86_pmu p6_pmu = {
 	.apic			= 1,
 	.max_period		= (1ULL << 31) - 1,
 	.version		= 0,
-	.num_counters		= 2,
+	.num_events		= 2,
 	/*
-	 * Counters have 40 bits implemented. However they are designed such
+	 * Events have 40 bits implemented. However they are designed such
 	 * that bits [32-39] are sign extensions of bit 31. As such the
-	 * effective width of a counter for P6-like PMU is 32 bits only.
+	 * effective width of a event for P6-like PMU is 32 bits only.
 	 *
 	 * See IA-32 Intel Architecture Software developer manual Vol 3B
 	 */
-	.counter_bits		= 32,
-	.counter_mask		= (1ULL << 32) - 1,
+	.event_bits		= 32,
+	.event_mask		= (1ULL << 32) - 1,
 };
 
 static struct x86_pmu intel_pmu = {
@@ -1557,8 +1884,8 @@ static struct x86_pmu intel_pmu = {
 	.handle_irq		= intel_pmu_handle_irq,
 	.disable_all		= intel_pmu_disable_all,
 	.enable_all		= intel_pmu_enable_all,
-	.enable			= intel_pmu_enable_counter,
-	.disable		= intel_pmu_disable_counter,
+	.enable			= intel_pmu_enable_event,
+	.disable		= intel_pmu_disable_event,
 	.eventsel		= MSR_ARCH_PERFMON_EVENTSEL0,
 	.perfctr		= MSR_ARCH_PERFMON_PERFCTR0,
 	.event_map		= intel_pmu_event_map,
@@ -1568,9 +1895,11 @@ static struct x86_pmu intel_pmu = {
 	/*
 	 * Intel PMCs cannot be accessed sanely above 32 bit width,
 	 * so we install an artificial 1<<31 period regardless of
-	 * the generic counter period:
+	 * the generic event period:
 	 */
 	.max_period		= (1ULL << 31) - 1,
+	.enable_bts		= intel_pmu_enable_bts,
+	.disable_bts		= intel_pmu_disable_bts,
 };
 
 static struct x86_pmu amd_pmu = {
@@ -1578,16 +1907,16 @@ static struct x86_pmu amd_pmu = {
 	.handle_irq		= amd_pmu_handle_irq,
 	.disable_all		= amd_pmu_disable_all,
 	.enable_all		= amd_pmu_enable_all,
-	.enable			= amd_pmu_enable_counter,
-	.disable		= amd_pmu_disable_counter,
+	.enable			= amd_pmu_enable_event,
+	.disable		= amd_pmu_disable_event,
 	.eventsel		= MSR_K7_EVNTSEL0,
 	.perfctr		= MSR_K7_PERFCTR0,
 	.event_map		= amd_pmu_event_map,
 	.raw_event		= amd_pmu_raw_event,
 	.max_events		= ARRAY_SIZE(amd_perfmon_event_map),
-	.num_counters		= 4,
-	.counter_bits		= 48,
-	.counter_mask		= (1ULL << 48) - 1,
+	.num_events		= 4,
+	.event_bits		= 48,
+	.event_mask		= (1ULL << 48) - 1,
 	.apic			= 1,
 	/* use highest bit to detect overflow */
 	.max_period		= (1ULL << 47) - 1,
@@ -1644,7 +1973,7 @@ static int intel_pmu_init(void)
 
 	/*
 	 * Check whether the Architectural PerfMon supports
-	 * Branch Misses Retired Event or not.
+	 * Branch Misses Retired hw_event or not.
 	 */
 	cpuid(10, &eax.full, &ebx, &unused, &edx.full);
 	if (eax.split.mask_length <= ARCH_PERFMON_BRANCH_MISSES_RETIRED)
@@ -1656,15 +1985,15 @@ static int intel_pmu_init(void)
 
 	x86_pmu				= intel_pmu;
 	x86_pmu.version			= version;
-	x86_pmu.num_counters		= eax.split.num_counters;
-	x86_pmu.counter_bits		= eax.split.bit_width;
-	x86_pmu.counter_mask		= (1ULL << eax.split.bit_width) - 1;
+	x86_pmu.num_events		= eax.split.num_events;
+	x86_pmu.event_bits		= eax.split.bit_width;
+	x86_pmu.event_mask		= (1ULL << eax.split.bit_width) - 1;
 
 	/*
-	 * Quirk: v2 perfmon does not report fixed-purpose counters, so
-	 * assume at least 3 counters:
+	 * Quirk: v2 perfmon does not report fixed-purpose events, so
+	 * assume at least 3 events:
 	 */
-	x86_pmu.num_counters_fixed	= max((int)edx.split.num_counters_fixed, 3);
+	x86_pmu.num_events_fixed	= max((int)edx.split.num_events_fixed, 3);
 
 	/*
 	 * Install the hw-cache-events table:
@@ -1711,11 +2040,11 @@ static int amd_pmu_init(void)
 	return 0;
 }
 
-void __init init_hw_perf_counters(void)
+void __init init_hw_perf_events(void)
 {
 	int err;
 
-	pr_info("Performance Counters: ");
+	pr_info("Performance Events: ");
 
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_INTEL:
@@ -1728,45 +2057,45 @@ void __init init_hw_perf_counters(void)
 		return;
 	}
 	if (err != 0) {
-		pr_cont("no PMU driver, software counters only.\n");
+		pr_cont("no PMU driver, software events only.\n");
 		return;
 	}
 
 	pr_cont("%s PMU driver.\n", x86_pmu.name);
 
-	if (x86_pmu.num_counters > X86_PMC_MAX_GENERIC) {
-		WARN(1, KERN_ERR "hw perf counters %d > max(%d), clipping!",
-		     x86_pmu.num_counters, X86_PMC_MAX_GENERIC);
-		x86_pmu.num_counters = X86_PMC_MAX_GENERIC;
+	if (x86_pmu.num_events > X86_PMC_MAX_GENERIC) {
+		WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
+		     x86_pmu.num_events, X86_PMC_MAX_GENERIC);
+		x86_pmu.num_events = X86_PMC_MAX_GENERIC;
 	}
-	perf_counter_mask = (1 << x86_pmu.num_counters) - 1;
-	perf_max_counters = x86_pmu.num_counters;
+	perf_event_mask = (1 << x86_pmu.num_events) - 1;
+	perf_max_events = x86_pmu.num_events;
 
-	if (x86_pmu.num_counters_fixed > X86_PMC_MAX_FIXED) {
-		WARN(1, KERN_ERR "hw perf counters fixed %d > max(%d), clipping!",
-		     x86_pmu.num_counters_fixed, X86_PMC_MAX_FIXED);
-		x86_pmu.num_counters_fixed = X86_PMC_MAX_FIXED;
+	if (x86_pmu.num_events_fixed > X86_PMC_MAX_FIXED) {
+		WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
+		     x86_pmu.num_events_fixed, X86_PMC_MAX_FIXED);
+		x86_pmu.num_events_fixed = X86_PMC_MAX_FIXED;
 	}
 
-	perf_counter_mask |=
-		((1LL << x86_pmu.num_counters_fixed)-1) << X86_PMC_IDX_FIXED;
-	x86_pmu.intel_ctrl = perf_counter_mask;
+	perf_event_mask |=
+		((1LL << x86_pmu.num_events_fixed)-1) << X86_PMC_IDX_FIXED;
+	x86_pmu.intel_ctrl = perf_event_mask;
 
-	perf_counters_lapic_init();
-	register_die_notifier(&perf_counter_nmi_notifier);
+	perf_events_lapic_init();
+	register_die_notifier(&perf_event_nmi_notifier);
 
-	pr_info("... version:                 %d\n",     x86_pmu.version);
-	pr_info("... bit width:               %d\n",     x86_pmu.counter_bits);
-	pr_info("... generic counters:        %d\n",     x86_pmu.num_counters);
-	pr_info("... value mask:              %016Lx\n", x86_pmu.counter_mask);
-	pr_info("... max period:              %016Lx\n", x86_pmu.max_period);
-	pr_info("... fixed-purpose counters:  %d\n",     x86_pmu.num_counters_fixed);
-	pr_info("... counter mask:            %016Lx\n", perf_counter_mask);
+	pr_info("... version:                %d\n",     x86_pmu.version);
+	pr_info("... bit width:              %d\n",     x86_pmu.event_bits);
+	pr_info("... generic registers:      %d\n",     x86_pmu.num_events);
+	pr_info("... value mask:             %016Lx\n", x86_pmu.event_mask);
+	pr_info("... max period:             %016Lx\n", x86_pmu.max_period);
+	pr_info("... fixed-purpose events:   %d\n",     x86_pmu.num_events_fixed);
+	pr_info("... event mask:             %016Lx\n", perf_event_mask);
 }
 
-static inline void x86_pmu_read(struct perf_counter *counter)
+static inline void x86_pmu_read(struct perf_event *event)
 {
-	x86_perf_counter_update(counter, &counter->hw, counter->hw.idx);
+	x86_perf_event_update(event, &event->hw, event->hw.idx);
 }
 
 static const struct pmu pmu = {
@@ -1776,13 +2105,16 @@ static const struct pmu pmu = {
 	.unthrottle	= x86_pmu_unthrottle,
 };
 
-const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
+const struct pmu *hw_perf_event_init(struct perf_event *event)
 {
 	int err;
 
-	err = __hw_perf_counter_init(counter);
-	if (err)
+	err = __hw_perf_event_init(event);
+	if (err) {
+		if (event->destroy)
+			event->destroy(event);
 		return ERR_PTR(err);
+	}
 
 	return &pmu;
 }
@@ -1798,8 +2130,8 @@ void callchain_store(struct perf_callchain_entry *entry, u64 ip)
 		entry->ip[entry->nr++] = ip;
 }
 
-static DEFINE_PER_CPU(struct perf_callchain_entry, irq_entry);
-static DEFINE_PER_CPU(struct perf_callchain_entry, nmi_entry);
+static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry);
+static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_nmi_entry);
 static DEFINE_PER_CPU(int, in_nmi_frame);
 
 
@@ -1952,9 +2284,9 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 	struct perf_callchain_entry *entry;
 
 	if (in_nmi())
-		entry = &__get_cpu_var(nmi_entry);
+		entry = &__get_cpu_var(pmc_nmi_entry);
 	else
-		entry = &__get_cpu_var(irq_entry);
+		entry = &__get_cpu_var(pmc_irq_entry);
 
 	entry->nr = 0;
 
@@ -1962,3 +2294,8 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 
 	return entry;
 }
+
+void hw_perf_event_setup_online(int cpu)
+{
+	init_debug_store_on_cpu(cpu);
+}
diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c
index e60ed740d2b..fab786f60ed 100644
--- a/arch/x86/kernel/cpu/perfctr-watchdog.c
+++ b/arch/x86/kernel/cpu/perfctr-watchdog.c
@@ -20,7 +20,7 @@
 #include <linux/kprobes.h>
 
 #include <asm/apic.h>
-#include <asm/perf_counter.h>
+#include <asm/perf_event.h>
 
 struct nmi_watchdog_ctlblk {
 	unsigned int cccr_msr;
@@ -68,16 +68,16 @@ static inline unsigned int nmi_perfctr_msr_to_bit(unsigned int msr)
 	/* returns the bit offset of the performance counter register */
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_AMD:
-		return (msr - MSR_K7_PERFCTR0);
+		return msr - MSR_K7_PERFCTR0;
 	case X86_VENDOR_INTEL:
 		if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON))
-			return (msr - MSR_ARCH_PERFMON_PERFCTR0);
+			return msr - MSR_ARCH_PERFMON_PERFCTR0;
 
 		switch (boot_cpu_data.x86) {
 		case 6:
-			return (msr - MSR_P6_PERFCTR0);
+			return msr - MSR_P6_PERFCTR0;
 		case 15:
-			return (msr - MSR_P4_BPU_PERFCTR0);
+			return msr - MSR_P4_BPU_PERFCTR0;
 		}
 	}
 	return 0;
@@ -92,16 +92,16 @@ static inline unsigned int nmi_evntsel_msr_to_bit(unsigned int msr)
 	/* returns the bit offset of the event selection register */
 	switch (boot_cpu_data.x86_vendor) {
 	case X86_VENDOR_AMD:
-		return (msr - MSR_K7_EVNTSEL0);
+		return msr - MSR_K7_EVNTSEL0;
 	case X86_VENDOR_INTEL:
 		if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON))
-			return (msr - MSR_ARCH_PERFMON_EVENTSEL0);
+			return msr - MSR_ARCH_PERFMON_EVENTSEL0;
 
 		switch (boot_cpu_data.x86) {
 		case 6:
-			return (msr - MSR_P6_EVNTSEL0);
+			return msr - MSR_P6_EVNTSEL0;
 		case 15:
-			return (msr - MSR_P4_BSU_ESCR0);
+			return msr - MSR_P4_BSU_ESCR0;
 		}
 	}
 	return 0;
@@ -113,7 +113,7 @@ int avail_to_resrv_perfctr_nmi_bit(unsigned int counter)
 {
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 
-	return (!test_bit(counter, perfctr_nmi_owner));
+	return !test_bit(counter, perfctr_nmi_owner);
 }
 
 /* checks the an msr for availability */
@@ -124,7 +124,7 @@ int avail_to_resrv_perfctr_nmi(unsigned int msr)
 	counter = nmi_perfctr_msr_to_bit(msr);
 	BUG_ON(counter > NMI_MAX_COUNTER_BITS);
 
-	return (!test_bit(counter, perfctr_nmi_owner));
+	return !test_bit(counter, perfctr_nmi_owner);
 }
 EXPORT_SYMBOL(avail_to_resrv_perfctr_nmi_bit);
 
@@ -237,7 +237,7 @@ static unsigned int adjust_for_32bit_ctr(unsigned int hz)
 	 */
 	counter_val = (u64)cpu_khz * 1000;
 	do_div(counter_val, retval);
- 	if (counter_val > 0x7fffffffULL) {
+	if (counter_val > 0x7fffffffULL) {
 		u64 count = (u64)cpu_khz * 1000;
 		do_div(count, 0x7fffffffUL);
 		retval = count + 1;
@@ -251,7 +251,7 @@ static void write_watchdog_counter(unsigned int perfctr_msr,
 	u64 count = (u64)cpu_khz * 1000;
 
 	do_div(count, nmi_hz);
-	if(descr)
+	if (descr)
 		pr_debug("setting %s to -0x%08Lx\n", descr, count);
 	wrmsrl(perfctr_msr, 0 - count);
 }
@@ -262,7 +262,7 @@ static void write_watchdog_counter32(unsigned int perfctr_msr,
 	u64 count = (u64)cpu_khz * 1000;
 
 	do_div(count, nmi_hz);
-	if(descr)
+	if (descr)
 		pr_debug("setting %s to -0x%08Lx\n", descr, count);
 	wrmsr(perfctr_msr, (u32)(-count), 0);
 }
@@ -296,7 +296,7 @@ static int setup_k7_watchdog(unsigned nmi_hz)
 
 	/* setup the timer */
 	wrmsr(evntsel_msr, evntsel, 0);
-	write_watchdog_counter(perfctr_msr, "K7_PERFCTR0",nmi_hz);
+	write_watchdog_counter(perfctr_msr, "K7_PERFCTR0", nmi_hz);
 
 	/* initialize the wd struct before enabling */
 	wd->perfctr_msr = perfctr_msr;
@@ -387,7 +387,7 @@ static int setup_p6_watchdog(unsigned nmi_hz)
 	/* setup the timer */
 	wrmsr(evntsel_msr, evntsel, 0);
 	nmi_hz = adjust_for_32bit_ctr(nmi_hz);
-	write_watchdog_counter32(perfctr_msr, "P6_PERFCTR0",nmi_hz);
+	write_watchdog_counter32(perfctr_msr, "P6_PERFCTR0", nmi_hz);
 
 	/* initialize the wd struct before enabling */
 	wd->perfctr_msr = perfctr_msr;
@@ -415,7 +415,7 @@ static void __kprobes p6_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz)
 	apic_write(APIC_LVTPC, APIC_DM_NMI);
 
 	/* P6/ARCH_PERFMON has 32 bit counter write */
-	write_watchdog_counter32(wd->perfctr_msr, NULL,nmi_hz);
+	write_watchdog_counter32(wd->perfctr_msr, NULL, nmi_hz);
 }
 
 static const struct wd_ops p6_wd_ops = {
@@ -490,9 +490,9 @@ static int setup_p4_watchdog(unsigned nmi_hz)
 	if (smp_num_siblings == 2) {
 		unsigned int ebx, apicid;
 
-        	ebx = cpuid_ebx(1);
-	        apicid = (ebx >> 24) & 0xff;
-        	ht_num = apicid & 1;
+		ebx = cpuid_ebx(1);
+		apicid = (ebx >> 24) & 0xff;
+		ht_num = apicid & 1;
 	} else
 #endif
 		ht_num = 0;
@@ -544,7 +544,7 @@ static int setup_p4_watchdog(unsigned nmi_hz)
 	}
 
 	evntsel = P4_ESCR_EVENT_SELECT(0x3F)
-	 	| P4_ESCR_OS
+		| P4_ESCR_OS
 		| P4_ESCR_USR;
 
 	cccr_val |= P4_CCCR_THRESHOLD(15)
@@ -612,7 +612,7 @@ static void __kprobes p4_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz)
 {
 	unsigned dummy;
 	/*
- 	 * P4 quirks:
+	 * P4 quirks:
 	 * - An overflown perfctr will assert its interrupt
 	 *   until the OVF flag in its CCCR is cleared.
 	 * - LVTPC is masked on interrupt and must be
@@ -662,7 +662,8 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz)
 	 * NOTE: Corresponding bit = 0 in ebx indicates event present.
 	 */
 	cpuid(10, &(eax.full), &ebx, &unused, &unused);
-	if ((eax.split.mask_length < (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX+1)) ||
+	if ((eax.split.mask_length <
+			(ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX+1)) ||
 	    (ebx & ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT))
 		return 0;
 
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index d5e30397246..62ac8cb6ba2 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -116,11 +116,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
 #endif
 	seq_printf(m, "clflush size\t: %u\n", c->x86_clflush_size);
-#ifdef CONFIG_X86_64
 	seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
 	seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
 		   c->x86_phys_bits, c->x86_virt_bits);
-#endif
 
 	seq_printf(m, "power management:");
 	for (i = 0; i < 32; i++) {
@@ -128,7 +126,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 			if (i < ARRAY_SIZE(x86_power_flags) &&
 			    x86_power_flags[i])
 				seq_printf(m, "%s%s",
-					   x86_power_flags[i][0]?" ":"",
+					   x86_power_flags[i][0] ? " " : "",
 					   x86_power_flags[i]);
 			else
 				seq_printf(m, " [%d]", i);
diff --git a/arch/x86/kernel/cpu/sched.c b/arch/x86/kernel/cpu/sched.c
new file mode 100644
index 00000000000..a640ae5ad20
--- /dev/null
+++ b/arch/x86/kernel/cpu/sched.c
@@ -0,0 +1,55 @@
+#include <linux/sched.h>
+#include <linux/math64.h>
+#include <linux/percpu.h>
+#include <linux/irqflags.h>
+
+#include <asm/cpufeature.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_SMP
+
+static DEFINE_PER_CPU(struct aperfmperf, old_perf_sched);
+
+static unsigned long scale_aperfmperf(void)
+{
+	struct aperfmperf val, *old = &__get_cpu_var(old_perf_sched);
+	unsigned long ratio, flags;
+
+	local_irq_save(flags);
+	get_aperfmperf(&val);
+	local_irq_restore(flags);
+
+	ratio = calc_aperfmperf_ratio(old, &val);
+	*old = val;
+
+	return ratio;
+}
+
+unsigned long arch_scale_freq_power(struct sched_domain *sd, int cpu)
+{
+	/*
+	 * do aperf/mperf on the cpu level because it includes things
+	 * like turbo mode, which are relevant to full cores.
+	 */
+	if (boot_cpu_has(X86_FEATURE_APERFMPERF))
+		return scale_aperfmperf();
+
+	/*
+	 * maybe have something cpufreq here
+	 */
+
+	return default_scale_freq_power(sd, cpu);
+}
+
+unsigned long arch_scale_smt_power(struct sched_domain *sd, int cpu)
+{
+	/*
+	 * aperf/mperf already includes the smt gain
+	 */
+	if (boot_cpu_has(X86_FEATURE_APERFMPERF))
+		return SCHED_LOAD_SCALE;
+
+	return default_scale_smt_power(sd, cpu);
+}
+
+#endif
diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 284c399e323..1cbed97b59c 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -24,6 +24,7 @@
 #include <linux/dmi.h>
 #include <asm/div64.h>
 #include <asm/vmware.h>
+#include <asm/x86_init.h>
 
 #define CPUID_VMWARE_INFO_LEAF	0x40000000
 #define VMWARE_HYPERVISOR_MAGIC	0x564D5868
@@ -47,19 +48,33 @@ static inline int __vmware_platform(void)
 	return eax != (uint32_t)-1 && ebx == VMWARE_HYPERVISOR_MAGIC;
 }
 
-static unsigned long __vmware_get_tsc_khz(void)
+static unsigned long vmware_get_tsc_khz(void)
 {
-        uint64_t tsc_hz;
-        uint32_t eax, ebx, ecx, edx;
+	uint64_t tsc_hz;
+	uint32_t eax, ebx, ecx, edx;
+
+	VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
+
+	tsc_hz = eax | (((uint64_t)ebx) << 32);
+	do_div(tsc_hz, 1000);
+	BUG_ON(tsc_hz >> 32);
+	printk(KERN_INFO "TSC freq read from hypervisor : %lu.%03lu MHz\n",
+			 (unsigned long) tsc_hz / 1000,
+			 (unsigned long) tsc_hz % 1000);
+	return tsc_hz;
+}
+
+void __init vmware_platform_setup(void)
+{
+	uint32_t eax, ebx, ecx, edx;
 
-        VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
+	VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);
 
-        if (ebx == UINT_MAX)
-                return 0;
-        tsc_hz = eax | (((uint64_t)ebx) << 32);
-        do_div(tsc_hz, 1000);
-        BUG_ON(tsc_hz >> 32);
-        return tsc_hz;
+	if (ebx != UINT_MAX)
+		x86_platform.calibrate_tsc = vmware_get_tsc_khz;
+	else
+		printk(KERN_WARNING
+		       "Failed to get TSC freq from the hypervisor\n");
 }
 
 /*
@@ -87,12 +102,6 @@ int vmware_platform(void)
 	return 0;
 }
 
-unsigned long vmware_get_tsc_khz(void)
-{
-	BUG_ON(!vmware_platform());
-	return __vmware_get_tsc_khz();
-}
-
 /*
  * VMware hypervisor takes care of exporting a reliable TSC to the guest.
  * Still, due to timing difference when running on virtual cpus, the TSC can
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index b07af886124..6a52d4b36a3 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -182,7 +182,7 @@ static struct notifier_block __refdata cpuid_class_cpu_notifier =
 	.notifier_call = cpuid_class_cpu_callback,
 };
 
-static char *cpuid_nodename(struct device *dev)
+static char *cpuid_devnode(struct device *dev, mode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt));
 }
@@ -203,7 +203,7 @@ static int __init cpuid_init(void)
 		err = PTR_ERR(cpuid_class);
 		goto out_chrdev;
 	}
-	cpuid_class->nodename = cpuid_nodename;
+	cpuid_class->devnode = cpuid_devnode;
 	for_each_online_cpu(i) {
 		err = cpuid_device_create(i);
 		if (err != 0)
diff --git a/arch/x86/kernel/doublefault_32.c b/arch/x86/kernel/doublefault_32.c
index b4f14c6c09d..37250fe490b 100644
--- a/arch/x86/kernel/doublefault_32.c
+++ b/arch/x86/kernel/doublefault_32.c
@@ -27,9 +27,7 @@ static void doublefault_fn(void)
 
 	if (ptr_ok(gdt)) {
 		gdt += GDT_ENTRY_TSS << 3;
-		tss = *(u16 *)(gdt+2);
-		tss += *(u8 *)(gdt+4) << 16;
-		tss += *(u8 *)(gdt+7) << 24;
+		tss = get_desc_base((struct desc_struct *)gdt);
 		printk(KERN_EMERG "double fault, tss at %08lx\n", tss);
 
 		if (ptr_ok(tss)) {
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 48bfe138603..ef42a038f1a 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -509,15 +509,15 @@ enum bts_field {
 	bts_escape		= ((unsigned long)-1 & ~bts_qual_mask)
 };
 
-static inline unsigned long bts_get(const char *base, enum bts_field field)
+static inline unsigned long bts_get(const char *base, unsigned long field)
 {
 	base += (ds_cfg.sizeof_ptr_field * field);
 	return *(unsigned long *)base;
 }
 
-static inline void bts_set(char *base, enum bts_field field, unsigned long val)
+static inline void bts_set(char *base, unsigned long field, unsigned long val)
 {
-	base += (ds_cfg.sizeof_ptr_field * field);;
+	base += (ds_cfg.sizeof_ptr_field * field);
 	(*(unsigned long *)base) = val;
 }
 
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index c8405718a4c..2d8a371d433 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -15,7 +15,6 @@
 #include <linux/bug.h>
 #include <linux/nmi.h>
 #include <linux/sysfs.h>
-#include <linux/ftrace.h>
 
 #include <asm/stacktrace.h>
 
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index bca5fba91c9..f7dd2a7c3bf 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -5,7 +5,6 @@
 #include <linux/kallsyms.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
-#include <linux/utsname.h>
 #include <linux/hardirq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 54b0a327676..a071e6be177 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -5,7 +5,6 @@
 #include <linux/kallsyms.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
-#include <linux/utsname.h>
 #include <linux/hardirq.h>
 #include <linux/kdebug.h>
 #include <linux/module.h>
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 5cb5725b2ba..85419bb7d4a 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -115,7 +115,7 @@ static void __init __e820_add_region(struct e820map *e820x, u64 start, u64 size,
 {
 	int x = e820x->nr_map;
 
-	if (x == ARRAY_SIZE(e820x->map)) {
+	if (x >= ARRAY_SIZE(e820x->map)) {
 		printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
 		return;
 	}
@@ -1331,7 +1331,7 @@ void __init e820_reserve_resources(void)
 	struct resource *res;
 	u64 end;
 
-	res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
+	res = alloc_bootmem(sizeof(struct resource) * e820.nr_map);
 	e820_res = res;
 	for (i = 0; i < e820.nr_map; i++) {
 		end = e820.map[i].addr + e820.map[i].size - 1;
@@ -1455,28 +1455,11 @@ char *__init default_machine_specific_memory_setup(void)
 	return who;
 }
 
-char *__init __attribute__((weak)) machine_specific_memory_setup(void)
-{
-	if (x86_quirks->arch_memory_setup) {
-		char *who = x86_quirks->arch_memory_setup();
-
-		if (who)
-			return who;
-	}
-	return default_machine_specific_memory_setup();
-}
-
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __init __attribute__((weak)) memory_setup(void)
-{
-	return machine_specific_memory_setup();
-}
-
 void __init setup_memory_map(void)
 {
 	char *who;
 
-	who = memory_setup();
+	who = x86_init.resources.memory_setup();
 	memcpy(&e820_saved, &e820, sizeof(struct e820map));
 	printk(KERN_INFO "BIOS-provided physical RAM map:\n");
 	e820_print_map(who);
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 335f049d110..41fd965c80c 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -160,721 +160,6 @@ static struct console early_serial_console = {
 	.index =	-1,
 };
 
-#ifdef CONFIG_EARLY_PRINTK_DBGP
-
-static struct ehci_caps __iomem *ehci_caps;
-static struct ehci_regs __iomem *ehci_regs;
-static struct ehci_dbg_port __iomem *ehci_debug;
-static unsigned int dbgp_endpoint_out;
-
-struct ehci_dev {
-	u32 bus;
-	u32 slot;
-	u32 func;
-};
-
-static struct ehci_dev ehci_dev;
-
-#define USB_DEBUG_DEVNUM 127
-
-#define DBGP_DATA_TOGGLE	0x8800
-
-static inline u32 dbgp_pid_update(u32 x, u32 tok)
-{
-	return ((x ^ DBGP_DATA_TOGGLE) & 0xffff00) | (tok & 0xff);
-}
-
-static inline u32 dbgp_len_update(u32 x, u32 len)
-{
-	return (x & ~0x0f) | (len & 0x0f);
-}
-
-/*
- * USB Packet IDs (PIDs)
- */
-
-/* token */
-#define USB_PID_OUT		0xe1
-#define USB_PID_IN		0x69
-#define USB_PID_SOF		0xa5
-#define USB_PID_SETUP		0x2d
-/* handshake */
-#define USB_PID_ACK		0xd2
-#define USB_PID_NAK		0x5a
-#define USB_PID_STALL		0x1e
-#define USB_PID_NYET		0x96
-/* data */
-#define USB_PID_DATA0		0xc3
-#define USB_PID_DATA1		0x4b
-#define USB_PID_DATA2		0x87
-#define USB_PID_MDATA		0x0f
-/* Special */
-#define USB_PID_PREAMBLE	0x3c
-#define USB_PID_ERR		0x3c
-#define USB_PID_SPLIT		0x78
-#define USB_PID_PING		0xb4
-#define USB_PID_UNDEF_0		0xf0
-
-#define USB_PID_DATA_TOGGLE	0x88
-#define DBGP_CLAIM (DBGP_OWNER | DBGP_ENABLED | DBGP_INUSE)
-
-#define PCI_CAP_ID_EHCI_DEBUG	0xa
-
-#define HUB_ROOT_RESET_TIME	50	/* times are in msec */
-#define HUB_SHORT_RESET_TIME	10
-#define HUB_LONG_RESET_TIME	200
-#define HUB_RESET_TIMEOUT	500
-
-#define DBGP_MAX_PACKET		8
-
-static int dbgp_wait_until_complete(void)
-{
-	u32 ctrl;
-	int loop = 0x100000;
-
-	do {
-		ctrl = readl(&ehci_debug->control);
-		/* Stop when the transaction is finished */
-		if (ctrl & DBGP_DONE)
-			break;
-	} while (--loop > 0);
-
-	if (!loop)
-		return -1;
-
-	/*
-	 * Now that we have observed the completed transaction,
-	 * clear the done bit.
-	 */
-	writel(ctrl | DBGP_DONE, &ehci_debug->control);
-	return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl);
-}
-
-static void __init dbgp_mdelay(int ms)
-{
-	int i;
-
-	while (ms--) {
-		for (i = 0; i < 1000; i++)
-			outb(0x1, 0x80);
-	}
-}
-
-static void dbgp_breath(void)
-{
-	/* Sleep to give the debug port a chance to breathe */
-}
-
-static int dbgp_wait_until_done(unsigned ctrl)
-{
-	u32 pids, lpid;
-	int ret;
-	int loop = 3;
-
-retry:
-	writel(ctrl | DBGP_GO, &ehci_debug->control);
-	ret = dbgp_wait_until_complete();
-	pids = readl(&ehci_debug->pids);
-	lpid = DBGP_PID_GET(pids);
-
-	if (ret < 0)
-		return ret;
-
-	/*
-	 * If the port is getting full or it has dropped data
-	 * start pacing ourselves, not necessary but it's friendly.
-	 */
-	if ((lpid == USB_PID_NAK) || (lpid == USB_PID_NYET))
-		dbgp_breath();
-
-	/* If I get a NACK reissue the transmission */
-	if (lpid == USB_PID_NAK) {
-		if (--loop > 0)
-			goto retry;
-	}
-
-	return ret;
-}
-
-static void dbgp_set_data(const void *buf, int size)
-{
-	const unsigned char *bytes = buf;
-	u32 lo, hi;
-	int i;
-
-	lo = hi = 0;
-	for (i = 0; i < 4 && i < size; i++)
-		lo |= bytes[i] << (8*i);
-	for (; i < 8 && i < size; i++)
-		hi |= bytes[i] << (8*(i - 4));
-	writel(lo, &ehci_debug->data03);
-	writel(hi, &ehci_debug->data47);
-}
-
-static void __init dbgp_get_data(void *buf, int size)
-{
-	unsigned char *bytes = buf;
-	u32 lo, hi;
-	int i;
-
-	lo = readl(&ehci_debug->data03);
-	hi = readl(&ehci_debug->data47);
-	for (i = 0; i < 4 && i < size; i++)
-		bytes[i] = (lo >> (8*i)) & 0xff;
-	for (; i < 8 && i < size; i++)
-		bytes[i] = (hi >> (8*(i - 4))) & 0xff;
-}
-
-static int dbgp_bulk_write(unsigned devnum, unsigned endpoint,
-			 const char *bytes, int size)
-{
-	u32 pids, addr, ctrl;
-	int ret;
-
-	if (size > DBGP_MAX_PACKET)
-		return -1;
-
-	addr = DBGP_EPADDR(devnum, endpoint);
-
-	pids = readl(&ehci_debug->pids);
-	pids = dbgp_pid_update(pids, USB_PID_OUT);
-
-	ctrl = readl(&ehci_debug->control);
-	ctrl = dbgp_len_update(ctrl, size);
-	ctrl |= DBGP_OUT;
-	ctrl |= DBGP_GO;
-
-	dbgp_set_data(bytes, size);
-	writel(addr, &ehci_debug->address);
-	writel(pids, &ehci_debug->pids);
-
-	ret = dbgp_wait_until_done(ctrl);
-	if (ret < 0)
-		return ret;
-
-	return ret;
-}
-
-static int __init dbgp_bulk_read(unsigned devnum, unsigned endpoint, void *data,
-				 int size)
-{
-	u32 pids, addr, ctrl;
-	int ret;
-
-	if (size > DBGP_MAX_PACKET)
-		return -1;
-
-	addr = DBGP_EPADDR(devnum, endpoint);
-
-	pids = readl(&ehci_debug->pids);
-	pids = dbgp_pid_update(pids, USB_PID_IN);
-
-	ctrl = readl(&ehci_debug->control);
-	ctrl = dbgp_len_update(ctrl, size);
-	ctrl &= ~DBGP_OUT;
-	ctrl |= DBGP_GO;
-
-	writel(addr, &ehci_debug->address);
-	writel(pids, &ehci_debug->pids);
-	ret = dbgp_wait_until_done(ctrl);
-	if (ret < 0)
-		return ret;
-
-	if (size > ret)
-		size = ret;
-	dbgp_get_data(data, size);
-	return ret;
-}
-
-static int __init dbgp_control_msg(unsigned devnum, int requesttype,
-	int request, int value, int index, void *data, int size)
-{
-	u32 pids, addr, ctrl;
-	struct usb_ctrlrequest req;
-	int read;
-	int ret;
-
-	read = (requesttype & USB_DIR_IN) != 0;
-	if (size > (read ? DBGP_MAX_PACKET:0))
-		return -1;
-
-	/* Compute the control message */
-	req.bRequestType = requesttype;
-	req.bRequest = request;
-	req.wValue = cpu_to_le16(value);
-	req.wIndex = cpu_to_le16(index);
-	req.wLength = cpu_to_le16(size);
-
-	pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP);
-	addr = DBGP_EPADDR(devnum, 0);
-
-	ctrl = readl(&ehci_debug->control);
-	ctrl = dbgp_len_update(ctrl, sizeof(req));
-	ctrl |= DBGP_OUT;
-	ctrl |= DBGP_GO;
-
-	/* Send the setup message */
-	dbgp_set_data(&req, sizeof(req));
-	writel(addr, &ehci_debug->address);
-	writel(pids, &ehci_debug->pids);
-	ret = dbgp_wait_until_done(ctrl);
-	if (ret < 0)
-		return ret;
-
-	/* Read the result */
-	return dbgp_bulk_read(devnum, 0, data, size);
-}
-
-
-/* Find a PCI capability */
-static u32 __init find_cap(u32 num, u32 slot, u32 func, int cap)
-{
-	u8 pos;
-	int bytes;
-
-	if (!(read_pci_config_16(num, slot, func, PCI_STATUS) &
-		PCI_STATUS_CAP_LIST))
-		return 0;
-
-	pos = read_pci_config_byte(num, slot, func, PCI_CAPABILITY_LIST);
-	for (bytes = 0; bytes < 48 && pos >= 0x40; bytes++) {
-		u8 id;
-
-		pos &= ~3;
-		id = read_pci_config_byte(num, slot, func, pos+PCI_CAP_LIST_ID);
-		if (id == 0xff)
-			break;
-		if (id == cap)
-			return pos;
-
-		pos = read_pci_config_byte(num, slot, func,
-						 pos+PCI_CAP_LIST_NEXT);
-	}
-	return 0;
-}
-
-static u32 __init __find_dbgp(u32 bus, u32 slot, u32 func)
-{
-	u32 class;
-
-	class = read_pci_config(bus, slot, func, PCI_CLASS_REVISION);
-	if ((class >> 8) != PCI_CLASS_SERIAL_USB_EHCI)
-		return 0;
-
-	return find_cap(bus, slot, func, PCI_CAP_ID_EHCI_DEBUG);
-}
-
-static u32 __init find_dbgp(int ehci_num, u32 *rbus, u32 *rslot, u32 *rfunc)
-{
-	u32 bus, slot, func;
-
-	for (bus = 0; bus < 256; bus++) {
-		for (slot = 0; slot < 32; slot++) {
-			for (func = 0; func < 8; func++) {
-				unsigned cap;
-
-				cap = __find_dbgp(bus, slot, func);
-
-				if (!cap)
-					continue;
-				if (ehci_num-- != 0)
-					continue;
-				*rbus = bus;
-				*rslot = slot;
-				*rfunc = func;
-				return cap;
-			}
-		}
-	}
-	return 0;
-}
-
-static int __init ehci_reset_port(int port)
-{
-	u32 portsc;
-	u32 delay_time, delay;
-	int loop;
-
-	/* Reset the usb debug port */
-	portsc = readl(&ehci_regs->port_status[port - 1]);
-	portsc &= ~PORT_PE;
-	portsc |= PORT_RESET;
-	writel(portsc, &ehci_regs->port_status[port - 1]);
-
-	delay = HUB_ROOT_RESET_TIME;
-	for (delay_time = 0; delay_time < HUB_RESET_TIMEOUT;
-	     delay_time += delay) {
-		dbgp_mdelay(delay);
-
-		portsc = readl(&ehci_regs->port_status[port - 1]);
-		if (portsc & PORT_RESET) {
-			/* force reset to complete */
-			loop = 2;
-			writel(portsc & ~(PORT_RWC_BITS | PORT_RESET),
-				&ehci_regs->port_status[port - 1]);
-			do {
-				portsc = readl(&ehci_regs->port_status[port-1]);
-			} while ((portsc & PORT_RESET) && (--loop > 0));
-		}
-
-		/* Device went away? */
-		if (!(portsc & PORT_CONNECT))
-			return -ENOTCONN;
-
-		/* bomb out completely if something weird happend */
-		if ((portsc & PORT_CSC))
-			return -EINVAL;
-
-		/* If we've finished resetting, then break out of the loop */
-		if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
-			return 0;
-	}
-	return -EBUSY;
-}
-
-static int __init ehci_wait_for_port(int port)
-{
-	u32 status;
-	int ret, reps;
-
-	for (reps = 0; reps < 3; reps++) {
-		dbgp_mdelay(100);
-		status = readl(&ehci_regs->status);
-		if (status & STS_PCD) {
-			ret = ehci_reset_port(port);
-			if (ret == 0)
-				return 0;
-		}
-	}
-	return -ENOTCONN;
-}
-
-#ifdef DBGP_DEBUG
-# define dbgp_printk early_printk
-#else
-static inline void dbgp_printk(const char *fmt, ...) { }
-#endif
-
-typedef void (*set_debug_port_t)(int port);
-
-static void __init default_set_debug_port(int port)
-{
-}
-
-static set_debug_port_t __initdata set_debug_port = default_set_debug_port;
-
-static void __init nvidia_set_debug_port(int port)
-{
-	u32 dword;
-	dword = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
-				 0x74);
-	dword &= ~(0x0f<<12);
-	dword |= ((port & 0x0f)<<12);
-	write_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func, 0x74,
-				 dword);
-	dbgp_printk("set debug port to %d\n", port);
-}
-
-static void __init detect_set_debug_port(void)
-{
-	u32 vendorid;
-
-	vendorid = read_pci_config(ehci_dev.bus, ehci_dev.slot, ehci_dev.func,
-		 0x00);
-
-	if ((vendorid & 0xffff) == 0x10de) {
-		dbgp_printk("using nvidia set_debug_port\n");
-		set_debug_port = nvidia_set_debug_port;
-	}
-}
-
-static int __init ehci_setup(void)
-{
-	struct usb_debug_descriptor dbgp_desc;
-	u32 cmd, ctrl, status, portsc, hcs_params;
-	u32 debug_port, new_debug_port = 0, n_ports;
-	u32  devnum;
-	int ret, i;
-	int loop;
-	int port_map_tried;
-	int playtimes = 3;
-
-try_next_time:
-	port_map_tried = 0;
-
-try_next_port:
-
-	hcs_params = readl(&ehci_caps->hcs_params);
-	debug_port = HCS_DEBUG_PORT(hcs_params);
-	n_ports    = HCS_N_PORTS(hcs_params);
-
-	dbgp_printk("debug_port: %d\n", debug_port);
-	dbgp_printk("n_ports:    %d\n", n_ports);
-
-	for (i = 1; i <= n_ports; i++) {
-		portsc = readl(&ehci_regs->port_status[i-1]);
-		dbgp_printk("portstatus%d: %08x\n", i, portsc);
-	}
-
-	if (port_map_tried && (new_debug_port != debug_port)) {
-		if (--playtimes) {
-			set_debug_port(new_debug_port);
-			goto try_next_time;
-		}
-		return -1;
-	}
-
-	loop = 10;
-	/* Reset the EHCI controller */
-	cmd = readl(&ehci_regs->command);
-	cmd |= CMD_RESET;
-	writel(cmd, &ehci_regs->command);
-	do {
-		cmd = readl(&ehci_regs->command);
-	} while ((cmd & CMD_RESET) && (--loop > 0));
-
-	if (!loop) {
-		dbgp_printk("can not reset ehci\n");
-		return -1;
-	}
-	dbgp_printk("ehci reset done\n");
-
-	/* Claim ownership, but do not enable yet */
-	ctrl = readl(&ehci_debug->control);
-	ctrl |= DBGP_OWNER;
-	ctrl &= ~(DBGP_ENABLED | DBGP_INUSE);
-	writel(ctrl, &ehci_debug->control);
-
-	/* Start the ehci running */
-	cmd = readl(&ehci_regs->command);
-	cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET);
-	cmd |= CMD_RUN;
-	writel(cmd, &ehci_regs->command);
-
-	/* Ensure everything is routed to the EHCI */
-	writel(FLAG_CF, &ehci_regs->configured_flag);
-
-	/* Wait until the controller is no longer halted */
-	loop = 10;
-	do {
-		status = readl(&ehci_regs->status);
-	} while ((status & STS_HALT) && (--loop > 0));
-
-	if (!loop) {
-		dbgp_printk("ehci can be started\n");
-		return -1;
-	}
-	dbgp_printk("ehci started\n");
-
-	/* Wait for a device to show up in the debug port */
-	ret = ehci_wait_for_port(debug_port);
-	if (ret < 0) {
-		dbgp_printk("No device found in debug port\n");
-		goto next_debug_port;
-	}
-	dbgp_printk("ehci wait for port done\n");
-
-	/* Enable the debug port */
-	ctrl = readl(&ehci_debug->control);
-	ctrl |= DBGP_CLAIM;
-	writel(ctrl, &ehci_debug->control);
-	ctrl = readl(&ehci_debug->control);
-	if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) {
-		dbgp_printk("No device in debug port\n");
-		writel(ctrl & ~DBGP_CLAIM, &ehci_debug->control);
-		goto err;
-	}
-	dbgp_printk("debug ported enabled\n");
-
-	/* Completely transfer the debug device to the debug controller */
-	portsc = readl(&ehci_regs->port_status[debug_port - 1]);
-	portsc &= ~PORT_PE;
-	writel(portsc, &ehci_regs->port_status[debug_port - 1]);
-
-	dbgp_mdelay(100);
-
-	/* Find the debug device and make it device number 127 */
-	for (devnum = 0; devnum <= 127; devnum++) {
-		ret = dbgp_control_msg(devnum,
-			USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
-			USB_REQ_GET_DESCRIPTOR, (USB_DT_DEBUG << 8), 0,
-			&dbgp_desc, sizeof(dbgp_desc));
-		if (ret > 0)
-			break;
-	}
-	if (devnum > 127) {
-		dbgp_printk("Could not find attached debug device\n");
-		goto err;
-	}
-	if (ret < 0) {
-		dbgp_printk("Attached device is not a debug device\n");
-		goto err;
-	}
-	dbgp_endpoint_out = dbgp_desc.bDebugOutEndpoint;
-
-	/* Move the device to 127 if it isn't already there */
-	if (devnum != USB_DEBUG_DEVNUM) {
-		ret = dbgp_control_msg(devnum,
-			USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
-			USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, NULL, 0);
-		if (ret < 0) {
-			dbgp_printk("Could not move attached device to %d\n",
-				USB_DEBUG_DEVNUM);
-			goto err;
-		}
-		devnum = USB_DEBUG_DEVNUM;
-		dbgp_printk("debug device renamed to 127\n");
-	}
-
-	/* Enable the debug interface */
-	ret = dbgp_control_msg(USB_DEBUG_DEVNUM,
-		USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
-		USB_REQ_SET_FEATURE, USB_DEVICE_DEBUG_MODE, 0, NULL, 0);
-	if (ret < 0) {
-		dbgp_printk(" Could not enable the debug device\n");
-		goto err;
-	}
-	dbgp_printk("debug interface enabled\n");
-
-	/* Perform a small write to get the even/odd data state in sync
-	 */
-	ret = dbgp_bulk_write(USB_DEBUG_DEVNUM, dbgp_endpoint_out, " ", 1);
-	if (ret < 0) {
-		dbgp_printk("dbgp_bulk_write failed: %d\n", ret);
-		goto err;
-	}
-	dbgp_printk("small write doned\n");
-
-	return 0;
-err:
-	/* Things didn't work so remove my claim */
-	ctrl = readl(&ehci_debug->control);
-	ctrl &= ~(DBGP_CLAIM | DBGP_OUT);
-	writel(ctrl, &ehci_debug->control);
-	return -1;
-
-next_debug_port:
-	port_map_tried |= (1<<(debug_port - 1));
-	new_debug_port = ((debug_port-1+1)%n_ports) + 1;
-	if (port_map_tried != ((1<<n_ports) - 1)) {
-		set_debug_port(new_debug_port);
-		goto try_next_port;
-	}
-	if (--playtimes) {
-		set_debug_port(new_debug_port);
-		goto try_next_time;
-	}
-
-	return -1;
-}
-
-static int __init early_dbgp_init(char *s)
-{
-	u32 debug_port, bar, offset;
-	u32 bus, slot, func, cap;
-	void __iomem *ehci_bar;
-	u32 dbgp_num;
-	u32 bar_val;
-	char *e;
-	int ret;
-	u8 byte;
-
-	if (!early_pci_allowed())
-		return -1;
-
-	dbgp_num = 0;
-	if (*s)
-		dbgp_num = simple_strtoul(s, &e, 10);
-	dbgp_printk("dbgp_num: %d\n", dbgp_num);
-
-	cap = find_dbgp(dbgp_num, &bus, &slot, &func);
-	if (!cap)
-		return -1;
-
-	dbgp_printk("Found EHCI debug port on %02x:%02x.%1x\n", bus, slot,
-			 func);
-
-	debug_port = read_pci_config(bus, slot, func, cap);
-	bar = (debug_port >> 29) & 0x7;
-	bar = (bar * 4) + 0xc;
-	offset = (debug_port >> 16) & 0xfff;
-	dbgp_printk("bar: %02x offset: %03x\n", bar, offset);
-	if (bar != PCI_BASE_ADDRESS_0) {
-		dbgp_printk("only debug ports on bar 1 handled.\n");
-
-		return -1;
-	}
-
-	bar_val = read_pci_config(bus, slot, func, PCI_BASE_ADDRESS_0);
-	dbgp_printk("bar_val: %02x offset: %03x\n", bar_val, offset);
-	if (bar_val & ~PCI_BASE_ADDRESS_MEM_MASK) {
-		dbgp_printk("only simple 32bit mmio bars supported\n");
-
-		return -1;
-	}
-
-	/* double check if the mem space is enabled */
-	byte = read_pci_config_byte(bus, slot, func, 0x04);
-	if (!(byte & 0x2)) {
-		byte  |= 0x02;
-		write_pci_config_byte(bus, slot, func, 0x04, byte);
-		dbgp_printk("mmio for ehci enabled\n");
-	}
-
-	/*
-	 * FIXME I don't have the bar size so just guess PAGE_SIZE is more
-	 * than enough.  1K is the biggest I have seen.
-	 */
-	set_fixmap_nocache(FIX_DBGP_BASE, bar_val & PAGE_MASK);
-	ehci_bar = (void __iomem *)__fix_to_virt(FIX_DBGP_BASE);
-	ehci_bar += bar_val & ~PAGE_MASK;
-	dbgp_printk("ehci_bar: %p\n", ehci_bar);
-
-	ehci_caps  = ehci_bar;
-	ehci_regs  = ehci_bar + HC_LENGTH(readl(&ehci_caps->hc_capbase));
-	ehci_debug = ehci_bar + offset;
-	ehci_dev.bus = bus;
-	ehci_dev.slot = slot;
-	ehci_dev.func = func;
-
-	detect_set_debug_port();
-
-	ret = ehci_setup();
-	if (ret < 0) {
-		dbgp_printk("ehci_setup failed\n");
-		ehci_debug = NULL;
-
-		return -1;
-	}
-
-	return 0;
-}
-
-static void early_dbgp_write(struct console *con, const char *str, u32 n)
-{
-	int chunk, ret;
-
-	if (!ehci_debug)
-		return;
-	while (n > 0) {
-		chunk = n;
-		if (chunk > DBGP_MAX_PACKET)
-			chunk = DBGP_MAX_PACKET;
-		ret = dbgp_bulk_write(USB_DEBUG_DEVNUM,
-			dbgp_endpoint_out, str, chunk);
-		str += chunk;
-		n -= chunk;
-	}
-}
-
-static struct console early_dbgp_console = {
-	.name =		"earlydbg",
-	.write =	early_dbgp_write,
-	.flags =	CON_PRINTBUFFER,
-	.index =	-1,
-};
-#endif
-
 /* Direct interface for emergencies */
 static struct console *early_console = &early_vga_console;
 static int __initdata early_console_initialized;
@@ -891,10 +176,24 @@ asmlinkage void early_printk(const char *fmt, ...)
 	va_end(ap);
 }
 
+static inline void early_console_register(struct console *con, int keep_early)
+{
+	if (early_console->index != -1) {
+		printk(KERN_CRIT "ERROR: earlyprintk= %s already used\n",
+		       con->name);
+		return;
+	}
+	early_console = con;
+	if (keep_early)
+		early_console->flags &= ~CON_BOOT;
+	else
+		early_console->flags |= CON_BOOT;
+	register_console(early_console);
+}
 
 static int __init setup_early_printk(char *buf)
 {
-	int keep_early;
+	int keep;
 
 	if (!buf)
 		return 0;
@@ -903,42 +202,34 @@ static int __init setup_early_printk(char *buf)
 		return 0;
 	early_console_initialized = 1;
 
-	keep_early = (strstr(buf, "keep") != NULL);
-
-	if (!strncmp(buf, "serial", 6)) {
-		early_serial_init(buf + 6);
-		early_console = &early_serial_console;
-	} else if (!strncmp(buf, "ttyS", 4)) {
-		early_serial_init(buf);
-		early_console = &early_serial_console;
-	} else if (!strncmp(buf, "vga", 3)
-		&& boot_params.screen_info.orig_video_isVGA == 1) {
-		max_xpos = boot_params.screen_info.orig_video_cols;
-		max_ypos = boot_params.screen_info.orig_video_lines;
-		current_ypos = boot_params.screen_info.orig_y;
-		early_console = &early_vga_console;
+	keep = (strstr(buf, "keep") != NULL);
+
+	while (*buf != '\0') {
+		if (!strncmp(buf, "serial", 6)) {
+			early_serial_init(buf + 6);
+			early_console_register(&early_serial_console, keep);
+		}
+		if (!strncmp(buf, "ttyS", 4)) {
+			early_serial_init(buf + 4);
+			early_console_register(&early_serial_console, keep);
+		}
+		if (!strncmp(buf, "vga", 3) &&
+		    boot_params.screen_info.orig_video_isVGA == 1) {
+			max_xpos = boot_params.screen_info.orig_video_cols;
+			max_ypos = boot_params.screen_info.orig_video_lines;
+			current_ypos = boot_params.screen_info.orig_y;
+			early_console_register(&early_vga_console, keep);
+		}
 #ifdef CONFIG_EARLY_PRINTK_DBGP
-	} else if (!strncmp(buf, "dbgp", 4)) {
-		if (early_dbgp_init(buf+4) < 0)
-			return 0;
-		early_console = &early_dbgp_console;
-		/*
-		 * usb subsys will reset ehci controller, so don't keep
-		 * that early console
-		 */
-		keep_early = 0;
+		if (!strncmp(buf, "dbgp", 4) && !early_dbgp_init(buf + 4))
+			early_console_register(&early_dbgp_console, keep);
 #endif
 #ifdef CONFIG_HVC_XEN
-	} else if (!strncmp(buf, "xen", 3)) {
-		early_console = &xenboot_console;
+		if (!strncmp(buf, "xen", 3))
+			early_console_register(&xenboot_console, keep);
 #endif
+		buf++;
 	}
-
-	if (keep_early)
-		early_console->flags &= ~CON_BOOT;
-	else
-		early_console->flags |= CON_BOOT;
-	register_console(early_console);
 	return 0;
 }
 
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index fe26ba3e345..ad5bd988fb7 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -42,6 +42,7 @@
 #include <asm/time.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
+#include <asm/x86_init.h>
 
 #define EFI_DEBUG	1
 #define PFX 		"EFI: "
@@ -453,6 +454,9 @@ void __init efi_init(void)
 	if (add_efi_memmap)
 		do_add_efi_memmap();
 
+	x86_platform.get_wallclock = efi_get_time;
+	x86_platform.set_wallclock = efi_set_rtc_mmss;
+
 	/* Setup for EFI runtime service */
 	reboot_type = BOOT_EFI;
 
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index c251be74510..b5c061f8f35 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -146,7 +146,7 @@ ENTRY(ftrace_graph_caller)
 END(ftrace_graph_caller)
 
 GLOBAL(return_to_handler)
-	subq  $80, %rsp
+	subq  $24, %rsp
 
 	/* Save the return values */
 	movq %rax, (%rsp)
@@ -155,10 +155,10 @@ GLOBAL(return_to_handler)
 
 	call ftrace_return_to_handler
 
-	movq %rax, 72(%rsp)
+	movq %rax, 16(%rsp)
 	movq 8(%rsp), %rdx
 	movq (%rsp), %rax
-	addq $72, %rsp
+	addq $16, %rsp
 	retq
 #endif
 
@@ -536,20 +536,13 @@ sysret_signal:
 	bt $TIF_SYSCALL_AUDIT,%edx
 	jc sysret_audit
 #endif
-	/* edx:	work flags (arg3) */
-	leaq -ARGOFFSET(%rsp),%rdi # &pt_regs -> arg1
-	xorl %esi,%esi # oldset -> arg2
-	SAVE_REST
-	FIXUP_TOP_OF_STACK %r11
-	call do_notify_resume
-	RESTORE_TOP_OF_STACK %r11
-	RESTORE_REST
-	movl $_TIF_WORK_MASK,%edi
-	/* Use IRET because user could have changed frame. This
-	   works because ptregscall_common has called FIXUP_TOP_OF_STACK. */
-	DISABLE_INTERRUPTS(CLBR_NONE)
-	TRACE_IRQS_OFF
-	jmp int_with_check
+	/*
+	 * We have a signal, or exit tracing or single-step.
+	 * These all wind up with the iret return path anyway,
+	 * so just join that path right now.
+	 */
+	FIXUP_TOP_OF_STACK %r11, -ARGOFFSET
+	jmp int_check_syscall_exit_work
 
 badsys:
 	movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
@@ -654,6 +647,7 @@ int_careful:
 int_very_careful:
 	TRACE_IRQS_ON
 	ENABLE_INTERRUPTS(CLBR_NONE)
+int_check_syscall_exit_work:
 	SAVE_REST
 	/* Check for syscall exit trace */
 	testl $_TIF_WORK_SYSCALL_EXIT,%edx
@@ -1021,7 +1015,7 @@ apicinterrupt ERROR_APIC_VECTOR \
 apicinterrupt SPURIOUS_APIC_VECTOR \
 	spurious_interrupt smp_spurious_interrupt
 
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
 apicinterrupt LOCAL_PENDING_VECTOR \
 	perf_pending_interrupt smp_perf_pending_interrupt
 #endif
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index d94e1ea3b9f..9dbb527e165 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -417,10 +417,6 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
 	unsigned long return_hooker = (unsigned long)
 				&return_to_handler;
 
-	/* Nmi's are currently unsupported */
-	if (unlikely(in_nmi()))
-		return;
-
 	if (unlikely(atomic_read(&current->tracing_graph_pause)))
 		return;
 
@@ -498,37 +494,56 @@ static struct syscall_metadata *find_syscall_meta(unsigned long *syscall)
 
 struct syscall_metadata *syscall_nr_to_meta(int nr)
 {
-	if (!syscalls_metadata || nr >= FTRACE_SYSCALL_MAX || nr < 0)
+	if (!syscalls_metadata || nr >= NR_syscalls || nr < 0)
 		return NULL;
 
 	return syscalls_metadata[nr];
 }
 
-void arch_init_ftrace_syscalls(void)
+int syscall_name_to_nr(char *name)
+{
+	int i;
+
+	if (!syscalls_metadata)
+		return -1;
+
+	for (i = 0; i < NR_syscalls; i++) {
+		if (syscalls_metadata[i]) {
+			if (!strcmp(syscalls_metadata[i]->name, name))
+				return i;
+		}
+	}
+	return -1;
+}
+
+void set_syscall_enter_id(int num, int id)
+{
+	syscalls_metadata[num]->enter_id = id;
+}
+
+void set_syscall_exit_id(int num, int id)
+{
+	syscalls_metadata[num]->exit_id = id;
+}
+
+static int __init arch_init_ftrace_syscalls(void)
 {
 	int i;
 	struct syscall_metadata *meta;
 	unsigned long **psys_syscall_table = &sys_call_table;
-	static atomic_t refs;
-
-	if (atomic_inc_return(&refs) != 1)
-		goto end;
 
 	syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) *
-					FTRACE_SYSCALL_MAX, GFP_KERNEL);
+					NR_syscalls, GFP_KERNEL);
 	if (!syscalls_metadata) {
 		WARN_ON(1);
-		return;
+		return -ENOMEM;
 	}
 
-	for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
+	for (i = 0; i < NR_syscalls; i++) {
 		meta = find_syscall_meta(psys_syscall_table[i]);
 		syscalls_metadata[i] = meta;
 	}
-	return;
-
-	/* Paranoid: avoid overflow */
-end:
-	atomic_dec(&refs);
+	return 0;
 }
+arch_initcall(arch_init_ftrace_syscalls);
 #endif
diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index 3f8579f8d42..4f8e2507e8f 100644
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -11,8 +11,21 @@
 #include <asm/setup.h>
 #include <asm/sections.h>
 #include <asm/e820.h>
-#include <asm/bios_ebda.h>
+#include <asm/page.h>
 #include <asm/trampoline.h>
+#include <asm/apic.h>
+#include <asm/io_apic.h>
+#include <asm/bios_ebda.h>
+
+static void __init i386_default_early_setup(void)
+{
+	/* Initilize 32bit specific setup functions */
+	x86_init.resources.probe_roms = probe_roms;
+	x86_init.resources.reserve_resources = i386_reserve_resources;
+	x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
+
+	reserve_ebda_region();
+}
 
 void __init i386_start_kernel(void)
 {
@@ -29,7 +42,16 @@ void __init i386_start_kernel(void)
 		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
 	}
 #endif
-	reserve_ebda_region();
+
+	/* Call the subarch specific early setup function */
+	switch (boot_params.hdr.hardware_subarch) {
+	case X86_SUBARCH_MRST:
+		x86_mrst_early_setup();
+		break;
+	default:
+		i386_default_early_setup();
+		break;
+	}
 
 	/*
 	 * At this point everything still needed from the boot loader
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 70eaa852c73..0b06cd778fd 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -23,8 +23,8 @@
 #include <asm/sections.h>
 #include <asm/kdebug.h>
 #include <asm/e820.h>
-#include <asm/bios_ebda.h>
 #include <asm/trampoline.h>
+#include <asm/bios_ebda.h>
 
 static void __init zap_identity_mappings(void)
 {
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index cc827ac9e8d..050c278481b 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -79,7 +79,7 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE)
  * any particular GDT layout, because we load our own as soon as we
  * can.
  */
-.section .text.head,"ax",@progbits
+__HEAD
 ENTRY(startup_32)
 	/* test KEEP_SEGMENTS flag to see if the bootloader is asking
 		us to not reload segments */
@@ -157,6 +157,7 @@ subarch_entries:
 	.long default_entry		/* normal x86/PC */
 	.long lguest_entry		/* lguest hypervisor */
 	.long xen_entry			/* Xen hypervisor */
+	.long default_entry		/* Moorestown MID */
 num_subarch_entries = (. - subarch_entries) / 4
 .previous
 #endif /* CONFIG_PARAVIRT */
@@ -439,7 +440,6 @@ is386:	movl $2,%ecx		# set MP
 	jne 1f
 	movl $per_cpu__gdt_page,%eax
 	movl $per_cpu__stack_canary,%ecx
-	subl $20, %ecx
 	movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax)
 	shrl $16, %ecx
 	movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax)
@@ -608,7 +608,7 @@ ENTRY(initial_code)
 /*
  * BSS section
  */
-.section ".bss.page_aligned","wa"
+__PAGE_ALIGNED_BSS
 	.align PAGE_SIZE_asm
 #ifdef CONFIG_X86_PAE
 swapper_pg_pmd:
@@ -626,7 +626,7 @@ ENTRY(empty_zero_page)
  * This starts the data section.
  */
 #ifdef CONFIG_X86_PAE
-.section ".data.page_aligned","wa"
+__PAGE_ALIGNED_DATA
 	/* Page-aligned for the benefit of paravirt? */
 	.align PAGE_SIZE_asm
 ENTRY(swapper_pg_dir)
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index fa54f78e2a0..780cd928fcd 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -40,7 +40,7 @@ L4_START_KERNEL = pgd_index(__START_KERNEL_map)
 L3_START_KERNEL = pud_index(__START_KERNEL_map)
 
 	.text
-	.section .text.head
+	__HEAD
 	.code64
 	.globl startup_64
 startup_64:
@@ -418,7 +418,7 @@ ENTRY(phys_base)
 ENTRY(idt_table)
 	.skip IDT_ENTRIES * 16
 
-	.section .bss.page_aligned, "aw", @nobits
+	__PAGE_ALIGNED_BSS
 	.align PAGE_SIZE
 ENTRY(empty_zero_page)
 	.skip PAGE_SIZE
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index 43cec6bdda6..1736c5a725a 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -10,6 +10,14 @@
 EXPORT_SYMBOL(mcount);
 #endif
 
+/*
+ * Note, this is a prototype to get at the symbol for
+ * the export, but dont use it from C code, it is used
+ * by assembly code and is not using C calling convention!
+ */
+extern void cmpxchg8b_emu(void);
+EXPORT_SYMBOL(cmpxchg8b_emu);
+
 /* Networking helper routines. */
 EXPORT_SYMBOL(csum_partial_copy_generic);
 
diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c
index 5cf36c053ac..23c167925a5 100644
--- a/arch/x86/kernel/i8253.c
+++ b/arch/x86/kernel/i8253.c
@@ -19,12 +19,6 @@
 DEFINE_SPINLOCK(i8253_lock);
 EXPORT_SYMBOL(i8253_lock);
 
-#ifdef CONFIG_X86_32
-static void pit_disable_clocksource(void);
-#else
-static inline void pit_disable_clocksource(void) { }
-#endif
-
 /*
  * HPET replaces the PIT, when enabled. So we need to know, which of
  * the two timers is used
@@ -57,12 +51,10 @@ static void init_pit_timer(enum clock_event_mode mode,
 			outb_pit(0, PIT_CH0);
 			outb_pit(0, PIT_CH0);
 		}
-		pit_disable_clocksource();
 		break;
 
 	case CLOCK_EVT_MODE_ONESHOT:
 		/* One shot setup */
-		pit_disable_clocksource();
 		outb_pit(0x38, PIT_MODE);
 		break;
 
@@ -200,17 +192,6 @@ static struct clocksource pit_cs = {
 	.shift		= 20,
 };
 
-static void pit_disable_clocksource(void)
-{
-	/*
-	 * Use mult to check whether it is registered or not
-	 */
-	if (pit_cs.mult) {
-		clocksource_unregister(&pit_cs);
-		pit_cs.mult = 0;
-	}
-}
-
 static int __init init_pit_clocksource(void)
 {
 	 /*
diff --git a/arch/x86/kernel/init_task.c b/arch/x86/kernel/init_task.c
index 270ff83efc1..3a54dcb9cd0 100644
--- a/arch/x86/kernel/init_task.c
+++ b/arch/x86/kernel/init_task.c
@@ -20,9 +20,8 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */
-union thread_union init_thread_union
-	__attribute__((__section__(".data.init_task"))) =
-		{ INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data =
+	{ INIT_THREAD_INFO(init_task) };
 
 /*
  * Initial task structure.
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index b0cdde6932f..74656d1d4e3 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -104,7 +104,7 @@ static int show_other_interrupts(struct seq_file *p, int prec)
 	seq_printf(p, "  Threshold APIC interrupts\n");
 # endif
 #endif
-#ifdef CONFIG_X86_NEW_MCE
+#ifdef CONFIG_X86_MCE
 	seq_printf(p, "%*s: ", prec, "MCE");
 	for_each_online_cpu(j)
 		seq_printf(p, "%10u ", per_cpu(mce_exception_count, j));
@@ -200,7 +200,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 	sum += irq_stats(cpu)->irq_threshold_count;
 # endif
 #endif
-#ifdef CONFIG_X86_NEW_MCE
+#ifdef CONFIG_X86_MCE
 	sum += per_cpu(mce_exception_count, cpu);
 	sum += per_cpu(mce_poll_count, cpu);
 #endif
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index 3b09634a515..7d35d0fe232 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -218,7 +218,6 @@ bool handle_irq(unsigned irq, struct pt_regs *regs)
 void fixup_irqs(void)
 {
 	unsigned int irq;
-	static int warned;
 	struct irq_desc *desc;
 
 	for_each_irq_desc(irq, desc) {
@@ -236,8 +235,8 @@ void fixup_irqs(void)
 		}
 		if (desc->chip->set_affinity)
 			desc->chip->set_affinity(irq, affinity);
-		else if (desc->action && !(warned++))
-			printk("Cannot set affinity for irq %i\n", irq);
+		else if (desc->action)
+			printk_once("Cannot set affinity for irq %i\n", irq);
 	}
 
 #if 0
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 92b7703d3d5..40f30773fb2 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -116,7 +116,7 @@ int vector_used_by_percpu_irq(unsigned int vector)
 	return 0;
 }
 
-static void __init init_ISA_irqs(void)
+void __init init_ISA_irqs(void)
 {
 	int i;
 
@@ -140,8 +140,10 @@ static void __init init_ISA_irqs(void)
 	}
 }
 
-/* Overridden in paravirt.c */
-void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
+void __init init_IRQ(void)
+{
+	x86_init.irqs.intr_init();
+}
 
 static void __init smp_intr_init(void)
 {
@@ -190,7 +192,7 @@ static void __init apic_intr_init(void)
 #ifdef CONFIG_X86_MCE_THRESHOLD
 	alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);
 #endif
-#if defined(CONFIG_X86_NEW_MCE) && defined(CONFIG_X86_LOCAL_APIC)
+#if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_LOCAL_APIC)
 	alloc_intr_gate(MCE_SELF_VECTOR, mce_self_interrupt);
 #endif
 
@@ -206,39 +208,19 @@ static void __init apic_intr_init(void)
 	alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
 
 	/* Performance monitoring interrupts: */
-# ifdef CONFIG_PERF_COUNTERS
+# ifdef CONFIG_PERF_EVENTS
 	alloc_intr_gate(LOCAL_PENDING_VECTOR, perf_pending_interrupt);
 # endif
 
 #endif
 }
 
-/**
- * x86_quirk_pre_intr_init - initialisation prior to setting up interrupt vectors
- *
- * Description:
- *	Perform any necessary interrupt initialisation prior to setting up
- *	the "ordinary" interrupt call gates.  For legacy reasons, the ISA
- *	interrupts should be initialised here if the machine emulates a PC
- *	in any way.
- **/
-static void __init x86_quirk_pre_intr_init(void)
-{
-#ifdef CONFIG_X86_32
-	if (x86_quirks->arch_pre_intr_init) {
-		if (x86_quirks->arch_pre_intr_init())
-			return;
-	}
-#endif
-	init_ISA_irqs();
-}
-
 void __init native_init_IRQ(void)
 {
 	int i;
 
 	/* Execute any quirks before the call gates are initialised: */
-	x86_quirk_pre_intr_init();
+	x86_init.irqs.pre_vector_init();
 
 	apic_intr_init();
 
@@ -258,12 +240,6 @@ void __init native_init_IRQ(void)
 
 #ifdef CONFIG_X86_32
 	/*
-	 * Call quirks after call gates are initialised (usually add in
-	 * the architecture specific gates):
-	 */
-	x86_quirk_intr_init();
-
-	/*
 	 * External FPU? Set up irq13 if so, for
 	 * original braindamaged IBM FERR coupling.
 	 */
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index c664d515f61..63b0ec8d3d4 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -34,7 +34,6 @@
 struct kvm_para_state {
 	u8 mmu_queue[MMU_QUEUE_SIZE];
 	int mmu_queue_len;
-	enum paravirt_lazy_mode mode;
 };
 
 static DEFINE_PER_CPU(struct kvm_para_state, para_state);
@@ -77,7 +76,7 @@ static void kvm_deferred_mmu_op(void *buffer, int len)
 {
 	struct kvm_para_state *state = kvm_para_state();
 
-	if (state->mode != PARAVIRT_LAZY_MMU) {
+	if (paravirt_get_lazy_mode() != PARAVIRT_LAZY_MMU) {
 		kvm_mmu_op(buffer, len);
 		return;
 	}
@@ -185,10 +184,7 @@ static void kvm_release_pt(unsigned long pfn)
 
 static void kvm_enter_lazy_mmu(void)
 {
-	struct kvm_para_state *state = kvm_para_state();
-
 	paravirt_enter_lazy_mmu();
-	state->mode = paravirt_get_lazy_mode();
 }
 
 static void kvm_leave_lazy_mmu(void)
@@ -197,7 +193,6 @@ static void kvm_leave_lazy_mmu(void)
 
 	mmu_queue_flush(state);
 	paravirt_leave_lazy_mmu();
-	state->mode = paravirt_get_lazy_mode();
 }
 
 static void __init paravirt_ops_setup(void)
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index 223af43f152..feaeb0d3aa4 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -22,6 +22,8 @@
 #include <asm/msr.h>
 #include <asm/apic.h>
 #include <linux/percpu.h>
+
+#include <asm/x86_init.h>
 #include <asm/reboot.h>
 
 #define KVM_SCALE 22
@@ -50,8 +52,8 @@ static unsigned long kvm_get_wallclock(void)
 	struct timespec ts;
 	int low, high;
 
-	low = (int)__pa(&wall_clock);
-	high = ((u64)__pa(&wall_clock) >> 32);
+	low = (int)__pa_symbol(&wall_clock);
+	high = ((u64)__pa_symbol(&wall_clock) >> 32);
 	native_write_msr(MSR_KVM_WALL_CLOCK, low, high);
 
 	vcpu_time = &get_cpu_var(hv_clock);
@@ -182,12 +184,13 @@ void __init kvmclock_init(void)
 	if (kvmclock && kvm_para_has_feature(KVM_FEATURE_CLOCKSOURCE)) {
 		if (kvm_register_clock("boot clock"))
 			return;
-		pv_time_ops.get_wallclock = kvm_get_wallclock;
-		pv_time_ops.set_wallclock = kvm_set_wallclock;
 		pv_time_ops.sched_clock = kvm_clock_read;
-		pv_time_ops.get_tsc_khz = kvm_get_tsc_khz;
+		x86_platform.calibrate_tsc = kvm_get_tsc_khz;
+		x86_platform.get_wallclock = kvm_get_wallclock;
+		x86_platform.set_wallclock = kvm_set_wallclock;
 #ifdef CONFIG_X86_LOCAL_APIC
-		pv_apic_ops.setup_secondary_clock = kvm_setup_secondary_clock;
+		x86_cpuinit.setup_percpu_clockev =
+			kvm_setup_secondary_clock;
 #endif
 #ifdef CONFIG_SMP
 		smp_ops.smp_prepare_boot_cpu = kvm_smp_prepare_boot_cpu;
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 71f1d99a635..ec6ef60cbd1 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -67,8 +67,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 #ifdef CONFIG_SMP
 		preempt_disable();
 		load_LDT(pc);
-		if (!cpus_equal(current->mm->cpu_vm_mask,
-				cpumask_of_cpu(smp_processor_id())))
+		if (!cpumask_equal(mm_cpumask(current->mm),
+				   cpumask_of(smp_processor_id())))
 			smp_call_function(flush_ldt, current->mm, 1);
 		preempt_enable();
 #else
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 9371448290a..378e9a8f1bf 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -210,8 +210,8 @@ static ssize_t microcode_write(struct file *file, const char __user *buf,
 {
 	ssize_t ret = -EINVAL;
 
-	if ((len >> PAGE_SHIFT) > num_physpages) {
-		pr_err("microcode: too much data (max %ld pages)\n", num_physpages);
+	if ((len >> PAGE_SHIFT) > totalram_pages) {
+		pr_err("microcode: too much data (max %ld pages)\n", totalram_pages);
 		return ret;
 	}
 
@@ -236,7 +236,7 @@ static const struct file_operations microcode_fops = {
 static struct miscdevice microcode_dev = {
 	.minor			= MICROCODE_MINOR,
 	.name			= "microcode",
-	.devnode		= "cpu/microcode",
+	.nodename		= "cpu/microcode",
 	.fops			= &microcode_fops,
 };
 
diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index 651c93b2886..5be95ef4ffe 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -45,6 +45,11 @@ static int __init mpf_checksum(unsigned char *mp, int len)
 	return sum & 0xFF;
 }
 
+int __init default_mpc_apic_id(struct mpc_cpu *m)
+{
+	return m->apicid;
+}
+
 static void __init MP_processor_info(struct mpc_cpu *m)
 {
 	int apicid;
@@ -55,10 +60,7 @@ static void __init MP_processor_info(struct mpc_cpu *m)
 		return;
 	}
 
-	if (x86_quirks->mpc_apic_id)
-		apicid = x86_quirks->mpc_apic_id(m);
-	else
-		apicid = m->apicid;
+	apicid = x86_init.mpparse.mpc_apic_id(m);
 
 	if (m->cpuflag & CPU_BOOTPROCESSOR) {
 		bootup_cpu = " (Bootup-CPU)";
@@ -70,16 +72,18 @@ static void __init MP_processor_info(struct mpc_cpu *m)
 }
 
 #ifdef CONFIG_X86_IO_APIC
-static void __init MP_bus_info(struct mpc_bus *m)
+void __init default_mpc_oem_bus_info(struct mpc_bus *m, char *str)
 {
-	char str[7];
 	memcpy(str, m->bustype, 6);
 	str[6] = 0;
+	apic_printk(APIC_VERBOSE, "Bus #%d is %s\n", m->busid, str);
+}
 
-	if (x86_quirks->mpc_oem_bus_info)
-		x86_quirks->mpc_oem_bus_info(m, str);
-	else
-		apic_printk(APIC_VERBOSE, "Bus #%d is %s\n", m->busid, str);
+static void __init MP_bus_info(struct mpc_bus *m)
+{
+	char str[7];
+
+	x86_init.mpparse.mpc_oem_bus_info(m, str);
 
 #if MAX_MP_BUSSES < 256
 	if (m->busid >= MAX_MP_BUSSES) {
@@ -96,8 +100,8 @@ static void __init MP_bus_info(struct mpc_bus *m)
 		mp_bus_id_to_type[m->busid] = MP_BUS_ISA;
 #endif
 	} else if (strncmp(str, BUSTYPE_PCI, sizeof(BUSTYPE_PCI) - 1) == 0) {
-		if (x86_quirks->mpc_oem_pci_bus)
-			x86_quirks->mpc_oem_pci_bus(m);
+		if (x86_init.mpparse.mpc_oem_pci_bus)
+			x86_init.mpparse.mpc_oem_pci_bus(m);
 
 		clear_bit(m->busid, mp_bus_not_pci);
 #if defined(CONFIG_EISA) || defined(CONFIG_MCA)
@@ -291,6 +295,8 @@ static void __init smp_dump_mptable(struct mpc_table *mpc, unsigned char *mpt)
 			1, mpc, mpc->length, 1);
 }
 
+void __init default_smp_read_mpc_oem(struct mpc_table *mpc) { }
+
 static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
 {
 	char str[16];
@@ -312,16 +318,13 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
 	if (early)
 		return 1;
 
-	if (mpc->oemptr && x86_quirks->smp_read_mpc_oem) {
-		struct mpc_oemtable *oem_table = (void *)(long)mpc->oemptr;
-		x86_quirks->smp_read_mpc_oem(oem_table, mpc->oemsize);
-	}
+	if (mpc->oemptr)
+		x86_init.mpparse.smp_read_mpc_oem(mpc);
 
 	/*
 	 *      Now process the configuration blocks.
 	 */
-	if (x86_quirks->mpc_record)
-		*x86_quirks->mpc_record = 0;
+	x86_init.mpparse.mpc_record(0);
 
 	while (count < mpc->length) {
 		switch (*mpt) {
@@ -353,8 +356,7 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
 			count = mpc->length;
 			break;
 		}
-		if (x86_quirks->mpc_record)
-			(*x86_quirks->mpc_record)++;
+		x86_init.mpparse.mpc_record(1);
 	}
 
 #ifdef CONFIG_X86_BIGSMP
@@ -482,11 +484,11 @@ static void __init construct_ioapic_table(int mpc_default_type)
 		MP_bus_info(&bus);
 	}
 
-	ioapic.type = MP_IOAPIC;
-	ioapic.apicid = 2;
-	ioapic.apicver = mpc_default_type > 4 ? 0x10 : 0x01;
-	ioapic.flags = MPC_APIC_USABLE;
-	ioapic.apicaddr = 0xFEC00000;
+	ioapic.type	= MP_IOAPIC;
+	ioapic.apicid	= 2;
+	ioapic.apicver	= mpc_default_type > 4 ? 0x10 : 0x01;
+	ioapic.flags	= MPC_APIC_USABLE;
+	ioapic.apicaddr	= IO_APIC_DEFAULT_PHYS_BASE;
 	MP_ioapic_info(&ioapic);
 
 	/*
@@ -608,7 +610,7 @@ static int __init check_physptr(struct mpf_intel *mpf, unsigned int early)
 /*
  * Scan the memory blocks for an SMP configuration block.
  */
-static void __init __get_smp_config(unsigned int early)
+void __init default_get_smp_config(unsigned int early)
 {
 	struct mpf_intel *mpf = mpf_found;
 
@@ -625,11 +627,6 @@ static void __init __get_smp_config(unsigned int early)
 	if (acpi_lapic && acpi_ioapic)
 		return;
 
-	if (x86_quirks->mach_get_smp_config) {
-		if (x86_quirks->mach_get_smp_config(early))
-			return;
-	}
-
 	printk(KERN_INFO "Intel MultiProcessor Specification v1.%d\n",
 	       mpf->specification);
 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)
@@ -670,16 +667,6 @@ static void __init __get_smp_config(unsigned int early)
 	 */
 }
 
-void __init early_get_smp_config(void)
-{
-	__get_smp_config(1);
-}
-
-void __init get_smp_config(void)
-{
-	__get_smp_config(0);
-}
-
 static void __init smp_reserve_bootmem(struct mpf_intel *mpf)
 {
 	unsigned long size = get_mpc_size(mpf->physptr);
@@ -745,14 +732,10 @@ static int __init smp_scan_config(unsigned long base, unsigned long length,
 	return 0;
 }
 
-static void __init __find_smp_config(unsigned int reserve)
+void __init default_find_smp_config(unsigned int reserve)
 {
 	unsigned int address;
 
-	if (x86_quirks->mach_find_smp_config) {
-		if (x86_quirks->mach_find_smp_config(reserve))
-			return;
-	}
 	/*
 	 * FIXME: Linux assumes you have 640K of base ram..
 	 * this continues the error...
@@ -787,16 +770,6 @@ static void __init __find_smp_config(unsigned int reserve)
 		smp_scan_config(address, 0x400, reserve);
 }
 
-void __init early_find_smp_config(void)
-{
-	__find_smp_config(0);
-}
-
-void __init find_smp_config(void)
-{
-	__find_smp_config(1);
-}
-
 #ifdef CONFIG_X86_IO_APIC
 static u8 __initdata irq_used[MAX_IRQ_SOURCES];
 
diff --git a/arch/x86/kernel/mrst.c b/arch/x86/kernel/mrst.c
new file mode 100644
index 00000000000..3b7078abc87
--- /dev/null
+++ b/arch/x86/kernel/mrst.c
@@ -0,0 +1,24 @@
+/*
+ * mrst.c: Intel Moorestown platform specific setup code
+ *
+ * (C) Copyright 2008 Intel Corporation
+ * Author: Jacob Pan (jacob.jun.pan@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+#include <linux/init.h>
+
+#include <asm/setup.h>
+
+/*
+ * Moorestown specific x86_init function overrides and early setup
+ * calls.
+ */
+void __init x86_mrst_early_setup(void)
+{
+	x86_init.resources.probe_roms = x86_init_noop;
+	x86_init.resources.reserve_resources = x86_init_noop;
+}
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 98fd6cd4e3a..6a3cefc7dda 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -1,6 +1,7 @@
 /* ----------------------------------------------------------------------- *
  *
  *   Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
+ *   Copyright 2009 Intel Corporation; author: H. Peter Anvin
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -80,11 +81,8 @@ static ssize_t msr_read(struct file *file, char __user *buf,
 
 	for (; count; count -= 8) {
 		err = rdmsr_safe_on_cpu(cpu, reg, &data[0], &data[1]);
-		if (err) {
-			if (err == -EFAULT) /* Fix idiotic error code */
-				err = -EIO;
+		if (err)
 			break;
-		}
 		if (copy_to_user(tmp, &data, 8)) {
 			err = -EFAULT;
 			break;
@@ -115,11 +113,8 @@ static ssize_t msr_write(struct file *file, const char __user *buf,
 			break;
 		}
 		err = wrmsr_safe_on_cpu(cpu, reg, data[0], data[1]);
-		if (err) {
-			if (err == -EFAULT) /* Fix idiotic error code */
-				err = -EIO;
+		if (err)
 			break;
-		}
 		tmp += 2;
 		bytes += 8;
 	}
@@ -127,6 +122,54 @@ static ssize_t msr_write(struct file *file, const char __user *buf,
 	return bytes ? bytes : err;
 }
 
+static long msr_ioctl(struct file *file, unsigned int ioc, unsigned long arg)
+{
+	u32 __user *uregs = (u32 __user *)arg;
+	u32 regs[8];
+	int cpu = iminor(file->f_path.dentry->d_inode);
+	int err;
+
+	switch (ioc) {
+	case X86_IOC_RDMSR_REGS:
+		if (!(file->f_mode & FMODE_READ)) {
+			err = -EBADF;
+			break;
+		}
+		if (copy_from_user(&regs, uregs, sizeof regs)) {
+			err = -EFAULT;
+			break;
+		}
+		err = rdmsr_safe_regs_on_cpu(cpu, regs);
+		if (err)
+			break;
+		if (copy_to_user(uregs, &regs, sizeof regs))
+			err = -EFAULT;
+		break;
+
+	case X86_IOC_WRMSR_REGS:
+		if (!(file->f_mode & FMODE_WRITE)) {
+			err = -EBADF;
+			break;
+		}
+		if (copy_from_user(&regs, uregs, sizeof regs)) {
+			err = -EFAULT;
+			break;
+		}
+		err = wrmsr_safe_regs_on_cpu(cpu, regs);
+		if (err)
+			break;
+		if (copy_to_user(uregs, &regs, sizeof regs))
+			err = -EFAULT;
+		break;
+
+	default:
+		err = -ENOTTY;
+		break;
+	}
+
+	return err;
+}
+
 static int msr_open(struct inode *inode, struct file *file)
 {
 	unsigned int cpu = iminor(file->f_path.dentry->d_inode);
@@ -157,6 +200,8 @@ static const struct file_operations msr_fops = {
 	.read = msr_read,
 	.write = msr_write,
 	.open = msr_open,
+	.unlocked_ioctl = msr_ioctl,
+	.compat_ioctl = msr_ioctl,
 };
 
 static int __cpuinit msr_device_create(int cpu)
@@ -196,7 +241,7 @@ static struct notifier_block __refdata msr_class_cpu_notifier = {
 	.notifier_call = msr_class_cpu_callback,
 };
 
-static char *msr_nodename(struct device *dev)
+static char *msr_devnode(struct device *dev, mode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "cpu/%u/msr", MINOR(dev->devt));
 }
@@ -217,7 +262,7 @@ static int __init msr_init(void)
 		err = PTR_ERR(msr_class);
 		goto out_chrdev;
 	}
-	msr_class->nodename = msr_nodename;
+	msr_class->devnode = msr_devnode;
 	for_each_online_cpu(i) {
 		err = msr_device_create(i);
 		if (err != 0)
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 70ec9b951d7..1b1739d1631 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -54,17 +54,12 @@ u64 _paravirt_ident_64(u64 x)
 	return x;
 }
 
-static void __init default_banner(void)
+void __init default_banner(void)
 {
 	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
 	       pv_info.name);
 }
 
-char *memory_setup(void)
-{
-	return pv_init_ops.memory_setup();
-}
-
 /* Simple instruction patching code. */
 #define DEF_NATIVE(ops, name, code)					\
 	extern const char start_##ops##_##name[], end_##ops##_##name[];	\
@@ -188,11 +183,6 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
 	return insn_len;
 }
 
-void init_IRQ(void)
-{
-	pv_irq_ops.init_IRQ();
-}
-
 static void native_flush_tlb(void)
 {
 	__native_flush_tlb();
@@ -218,13 +208,6 @@ extern void native_irq_enable_sysexit(void);
 extern void native_usergs_sysret32(void);
 extern void native_usergs_sysret64(void);
 
-static int __init print_banner(void)
-{
-	pv_init_ops.banner();
-	return 0;
-}
-core_initcall(print_banner);
-
 static struct resource reserve_ioports = {
 	.start = 0,
 	.end = IO_SPACE_LIMIT,
@@ -320,21 +303,13 @@ struct pv_info pv_info = {
 
 struct pv_init_ops pv_init_ops = {
 	.patch = native_patch,
-	.banner = default_banner,
-	.arch_setup = paravirt_nop,
-	.memory_setup = machine_specific_memory_setup,
 };
 
 struct pv_time_ops pv_time_ops = {
-	.time_init = hpet_time_init,
-	.get_wallclock = native_get_wallclock,
-	.set_wallclock = native_set_wallclock,
 	.sched_clock = native_sched_clock,
-	.get_tsc_khz = native_calibrate_tsc,
 };
 
 struct pv_irq_ops pv_irq_ops = {
-	.init_IRQ = native_init_IRQ,
 	.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
 	.restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
 	.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
@@ -362,8 +337,9 @@ struct pv_cpu_ops pv_cpu_ops = {
 #endif
 	.wbinvd = native_wbinvd,
 	.read_msr = native_read_msr_safe,
-	.read_msr_amd = native_read_msr_amd_safe,
+	.rdmsr_regs = native_rdmsr_safe_regs,
 	.write_msr = native_write_msr_safe,
+	.wrmsr_regs = native_wrmsr_safe_regs,
 	.read_tsc = native_read_tsc,
 	.read_pmc = native_read_pmc,
 	.read_tscp = native_read_tscp,
@@ -408,8 +384,6 @@ struct pv_cpu_ops pv_cpu_ops = {
 
 struct pv_apic_ops pv_apic_ops = {
 #ifdef CONFIG_X86_LOCAL_APIC
-	.setup_boot_clock = setup_boot_APIC_clock,
-	.setup_secondary_clock = setup_secondary_APIC_clock,
 	.startup_ipi_hook = paravirt_nop,
 #endif
 };
@@ -423,13 +397,6 @@ struct pv_apic_ops pv_apic_ops = {
 #endif
 
 struct pv_mmu_ops pv_mmu_ops = {
-#ifndef CONFIG_X86_64
-	.pagetable_setup_start = native_pagetable_setup_start,
-	.pagetable_setup_done = native_pagetable_setup_done,
-#else
-	.pagetable_setup_start = paravirt_nop,
-	.pagetable_setup_done = paravirt_nop,
-#endif
 
 	.read_cr2 = native_read_cr2,
 	.write_cr2 = native_write_cr2,
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 1a041bcf506..64b838eac18 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -3,6 +3,7 @@
 #include <linux/dmar.h>
 #include <linux/bootmem.h>
 #include <linux/pci.h>
+#include <linux/kmemleak.h>
 
 #include <asm/proto.h>
 #include <asm/dma.h>
@@ -32,7 +33,14 @@ int no_iommu __read_mostly;
 /* Set this to 1 if there is a HW IOMMU in the system */
 int iommu_detected __read_mostly = 0;
 
-int iommu_pass_through;
+/*
+ * This variable becomes 1 if iommu=pt is passed on the kernel command line.
+ * If this variable is 1, IOMMU implementations do no DMA ranslation for
+ * devices and allow every device to access to whole physical memory. This is
+ * useful if a user want to use an IOMMU only for KVM device assignment to
+ * guests and not for driver dma translation.
+ */
+int iommu_pass_through __read_mostly;
 
 dma_addr_t bad_dma_address __read_mostly = 0;
 EXPORT_SYMBOL(bad_dma_address);
@@ -88,6 +96,11 @@ void __init dma32_reserve_bootmem(void)
 	size = roundup(dma32_bootmem_size, align);
 	dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
 				 512ULL<<20);
+	/*
+	 * Kmemleak should not scan this block as it may not be mapped via the
+	 * kernel direct mapping.
+	 */
+	kmemleak_ignore(dma32_bootmem_ptr);
 	if (dma32_bootmem_ptr)
 		dma32_bootmem_size = size;
 	else
@@ -147,7 +160,7 @@ again:
 		return NULL;
 
 	addr = page_to_phys(page);
-	if (!is_buffer_dma_capable(dma_mask, addr, size)) {
+	if (addr + size > dma_mask) {
 		__free_pages(page, get_order(size));
 
 		if (dma_mask < DMA_BIT_MASK(32) && !(flag & GFP_DMA)) {
@@ -212,10 +225,8 @@ static __init int iommu_setup(char *p)
 		if (!strncmp(p, "soft", 4))
 			swiotlb = 1;
 #endif
-		if (!strncmp(p, "pt", 2)) {
+		if (!strncmp(p, "pt", 2))
 			iommu_pass_through = 1;
-			return 1;
-		}
 
 		gart_parse_options(p);
 
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index d2e56b8f48e..98a827ee9ed 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -190,14 +190,13 @@ static void iommu_full(struct device *dev, size_t size, int dir)
 static inline int
 need_iommu(struct device *dev, unsigned long addr, size_t size)
 {
-	return force_iommu ||
-		!is_buffer_dma_capable(*dev->dma_mask, addr, size);
+	return force_iommu || !dma_capable(dev, addr, size);
 }
 
 static inline int
 nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
 {
-	return !is_buffer_dma_capable(*dev->dma_mask, addr, size);
+	return !dma_capable(dev, addr, size);
 }
 
 /* Map a single continuous physical area into the IOMMU.
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index 71d412a09f3..a3933d4330c 100644
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -14,7 +14,7 @@
 static int
 check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
 {
-	if (hwdev && !is_buffer_dma_capable(*hwdev->dma_mask, bus, size)) {
+	if (hwdev && !dma_capable(hwdev, bus, size)) {
 		if (*hwdev->dma_mask >= DMA_BIT_MASK(32))
 			printk(KERN_ERR
 			    "nommu_%s: overflow %Lx+%zu of device mask %Lx\n",
@@ -79,12 +79,29 @@ static void nommu_free_coherent(struct device *dev, size_t size, void *vaddr,
 	free_pages((unsigned long)vaddr, get_order(size));
 }
 
+static void nommu_sync_single_for_device(struct device *dev,
+			dma_addr_t addr, size_t size,
+			enum dma_data_direction dir)
+{
+	flush_write_buffers();
+}
+
+
+static void nommu_sync_sg_for_device(struct device *dev,
+			struct scatterlist *sg, int nelems,
+			enum dma_data_direction dir)
+{
+	flush_write_buffers();
+}
+
 struct dma_map_ops nommu_dma_ops = {
-	.alloc_coherent	= dma_generic_alloc_coherent,
-	.free_coherent	= nommu_free_coherent,
-	.map_sg		= nommu_map_sg,
-	.map_page	= nommu_map_page,
-	.is_phys	= 1,
+	.alloc_coherent		= dma_generic_alloc_coherent,
+	.free_coherent		= nommu_free_coherent,
+	.map_sg			= nommu_map_sg,
+	.map_page		= nommu_map_page,
+	.sync_single_for_device = nommu_sync_single_for_device,
+	.sync_sg_for_device	= nommu_sync_sg_for_device,
+	.is_phys		= 1,
 };
 
 void __init no_iommu_init(void)
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index 6af96ee4420..aaa6b7839f1 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -13,31 +13,6 @@
 
 int swiotlb __read_mostly;
 
-void * __init swiotlb_alloc_boot(size_t size, unsigned long nslabs)
-{
-	return alloc_bootmem_low_pages(size);
-}
-
-void *swiotlb_alloc(unsigned order, unsigned long nslabs)
-{
-	return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
-}
-
-dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
-{
-	return paddr;
-}
-
-phys_addr_t swiotlb_bus_to_phys(struct device *hwdev, dma_addr_t baddr)
-{
-	return baddr;
-}
-
-int __weak swiotlb_arch_range_needs_mapping(phys_addr_t paddr, size_t size)
-{
-	return 0;
-}
-
 static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
 					dma_addr_t *dma_handle, gfp_t flags)
 {
@@ -71,9 +46,8 @@ void __init pci_swiotlb_init(void)
 {
 	/* don't initialize swiotlb if iommu=off (no_iommu=1) */
 #ifdef CONFIG_X86_64
-	if ((!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN) ||
-		iommu_pass_through)
-	       swiotlb = 1;
+	if ((!iommu_detected && !no_iommu && max_pfn > MAX_DMA32_PFN))
+		swiotlb = 1;
 #endif
 	if (swiotlb_force)
 		swiotlb = 1;
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 071166a4ba8..5284cd2b577 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -9,7 +9,7 @@
 #include <linux/pm.h>
 #include <linux/clockchips.h>
 #include <linux/random.h>
-#include <trace/power.h>
+#include <trace/events/power.h>
 #include <asm/system.h>
 #include <asm/apic.h>
 #include <asm/syscalls.h>
@@ -25,9 +25,6 @@ EXPORT_SYMBOL(idle_nomwait);
 
 struct kmem_cache *task_xstate_cachep;
 
-DEFINE_TRACE(power_start);
-DEFINE_TRACE(power_end);
-
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {
 	*dst = *src;
@@ -299,9 +296,7 @@ static inline int hlt_use_halt(void)
 void default_idle(void)
 {
 	if (hlt_use_halt()) {
-		struct power_trace it;
-
-		trace_power_start(&it, POWER_CSTATE, 1);
+		trace_power_start(POWER_CSTATE, 1);
 		current_thread_info()->status &= ~TS_POLLING;
 		/*
 		 * TS_POLLING-cleared state must be visible before we
@@ -314,7 +309,6 @@ void default_idle(void)
 		else
 			local_irq_enable();
 		current_thread_info()->status |= TS_POLLING;
-		trace_power_end(&it);
 	} else {
 		local_irq_enable();
 		/* loop is done by the caller */
@@ -372,9 +366,7 @@ EXPORT_SYMBOL_GPL(cpu_idle_wait);
  */
 void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
 {
-	struct power_trace it;
-
-	trace_power_start(&it, POWER_CSTATE, (ax>>4)+1);
+	trace_power_start(POWER_CSTATE, (ax>>4)+1);
 	if (!need_resched()) {
 		if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
 			clflush((void *)&current_thread_info()->flags);
@@ -384,15 +376,13 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
 		if (!need_resched())
 			__mwait(ax, cx);
 	}
-	trace_power_end(&it);
 }
 
 /* Default MONITOR/MWAIT with no hints, used for default C1 state */
 static void mwait_idle(void)
 {
-	struct power_trace it;
 	if (!need_resched()) {
-		trace_power_start(&it, POWER_CSTATE, 1);
+		trace_power_start(POWER_CSTATE, 1);
 		if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
 			clflush((void *)&current_thread_info()->flags);
 
@@ -402,7 +392,6 @@ static void mwait_idle(void)
 			__sti_mwait(0, 0);
 		else
 			local_irq_enable();
-		trace_power_end(&it);
 	} else
 		local_irq_enable();
 }
@@ -414,13 +403,11 @@ static void mwait_idle(void)
  */
 static void poll_idle(void)
 {
-	struct power_trace it;
-
-	trace_power_start(&it, POWER_CSTATE, 0);
+	trace_power_start(POWER_CSTATE, 0);
 	local_irq_enable();
 	while (!need_resched())
 		cpu_relax();
-	trace_power_end(&it);
+	trace_power_end(0);
 }
 
 /*
@@ -568,10 +555,8 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
 void __init init_c1e_mask(void)
 {
 	/* If we're using c1e_idle, we need to allocate c1e_mask. */
-	if (pm_idle == c1e_idle) {
-		alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
-		cpumask_clear(c1e_mask);
-	}
+	if (pm_idle == c1e_idle)
+		zalloc_cpumask_var(&c1e_mask, GFP_KERNEL);
 }
 
 static int __init idle_setup(char *str)
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 59f4524984a..4cf79567cda 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -61,9 +61,6 @@
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
 
-DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-
 /*
  * Return saved PC of a blocked thread.
  */
@@ -350,14 +347,21 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 				 *next = &next_p->thread;
 	int cpu = smp_processor_id();
 	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	bool preload_fpu;
 
 	/* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
 
-	__unlazy_fpu(prev_p);
+	/*
+	 * If the task has used fpu the last 5 timeslices, just do a full
+	 * restore of the math state immediately to avoid the trap; the
+	 * chances of needing FPU soon are obviously high now
+	 */
+	preload_fpu = tsk_used_math(next_p) && next_p->fpu_counter > 5;
 
+	__unlazy_fpu(prev_p);
 
 	/* we're going to use this soon, after a few expensive things */
-	if (next_p->fpu_counter > 5)
+	if (preload_fpu)
 		prefetch(next->xstate);
 
 	/*
@@ -398,6 +402,11 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 		     task_thread_info(next_p)->flags & _TIF_WORK_CTXSW_NEXT))
 		__switch_to_xtra(prev_p, next_p, tss);
 
+	/* If we're going to preload the fpu context, make sure clts
+	   is run while we're batching the cpu state updates. */
+	if (preload_fpu)
+		clts();
+
 	/*
 	 * Leave lazy mode, flushing any hypercalls made here.
 	 * This must be done before restoring TLS segments so
@@ -407,15 +416,8 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	arch_end_context_switch(next_p);
 
-	/* If the task has used fpu the last 5 timeslices, just do a full
-	 * restore of the math state immediately to avoid the trap; the
-	 * chances of needing FPU soon are obviously high now
-	 *
-	 * tsk_used_math() checks prevent calling math_state_restore(),
-	 * which can sleep in the case of !tsk_used_math()
-	 */
-	if (tsk_used_math(next_p) && next_p->fpu_counter > 5)
-		math_state_restore();
+	if (preload_fpu)
+		__math_state_restore();
 
 	/*
 	 * Restore %gs if needed (which is common)
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ebefb5407b9..ad535b68317 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -55,9 +55,6 @@
 
 asmlinkage extern void ret_from_fork(void);
 
-DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task;
-EXPORT_PER_CPU_SYMBOL(current_task);
-
 DEFINE_PER_CPU(unsigned long, old_rsp);
 static DEFINE_PER_CPU(unsigned char, is_idle);
 
@@ -386,9 +383,17 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	int cpu = smp_processor_id();
 	struct tss_struct *tss = &per_cpu(init_tss, cpu);
 	unsigned fsindex, gsindex;
+	bool preload_fpu;
+
+	/*
+	 * If the task has used fpu the last 5 timeslices, just do a full
+	 * restore of the math state immediately to avoid the trap; the
+	 * chances of needing FPU soon are obviously high now
+	 */
+	preload_fpu = tsk_used_math(next_p) && next_p->fpu_counter > 5;
 
 	/* we're going to use this soon, after a few expensive things */
-	if (next_p->fpu_counter > 5)
+	if (preload_fpu)
 		prefetch(next->xstate);
 
 	/*
@@ -419,6 +424,13 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 
 	load_TLS(next, cpu);
 
+	/* Must be after DS reload */
+	unlazy_fpu(prev_p);
+
+	/* Make sure cpu is ready for new context */
+	if (preload_fpu)
+		clts();
+
 	/*
 	 * Leave lazy mode, flushing any hypercalls made here.
 	 * This must be done before restoring TLS segments so
@@ -459,9 +471,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 		wrmsrl(MSR_KERNEL_GS_BASE, next->gs);
 	prev->gsindex = gsindex;
 
-	/* Must be after DS reload */
-	unlazy_fpu(prev_p);
-
 	/*
 	 * Switch the PDA and FPU contexts.
 	 */
@@ -480,15 +489,12 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 		     task_thread_info(prev_p)->flags & _TIF_WORK_CTXSW_PREV))
 		__switch_to_xtra(prev_p, next_p, tss);
 
-	/* If the task has used fpu the last 5 timeslices, just do a full
-	 * restore of the math state immediately to avoid the trap; the
-	 * chances of needing FPU soon are obviously high now
-	 *
-	 * tsk_used_math() checks prevent calling math_state_restore(),
-	 * which can sleep in the case of !tsk_used_math()
+	/*
+	 * Preload the FPU context, now that we've determined that the
+	 * task is likely to be using it. 
 	 */
-	if (tsk_used_math(next_p) && next_p->fpu_counter > 5)
-		math_state_restore();
+	if (preload_fpu)
+		__math_state_restore();
 	return prev_p;
 }
 
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 09ecbde91c1..7b058a2dc66 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -35,10 +35,11 @@
 #include <asm/proto.h>
 #include <asm/ds.h>
 
-#include <trace/syscall.h>
-
 #include "tls.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/syscalls.h>
+
 enum x86_regset {
 	REGSET_GENERAL,
 	REGSET_FP,
@@ -324,16 +325,6 @@ static int putreg(struct task_struct *child,
 		return set_flags(child, value);
 
 #ifdef CONFIG_X86_64
-	/*
-	 * Orig_ax is really just a flag with small positive and
-	 * negative values, so make sure to always sign-extend it
-	 * from 32 bits so that it works correctly regardless of
-	 * whether we come from a 32-bit environment or not.
-	 */
-	case offsetof(struct user_regs_struct, orig_ax):
-		value = (long) (s32) value;
-		break;
-
 	case offsetof(struct user_regs_struct,fs_base):
 		if (value >= TASK_SIZE_OF(child))
 			return -EIO;
@@ -1125,10 +1116,15 @@ static int putreg32(struct task_struct *child, unsigned regno, u32 value)
 
 	case offsetof(struct user32, regs.orig_eax):
 		/*
-		 * Sign-extend the value so that orig_eax = -1
-		 * causes (long)orig_ax < 0 tests to fire correctly.
+		 * A 32-bit debugger setting orig_eax means to restore
+		 * the state of the task restarting a 32-bit syscall.
+		 * Make sure we interpret the -ERESTART* codes correctly
+		 * in case the task is not actually still sitting at the
+		 * exit from a 32-bit syscall with TS_COMPAT still set.
 		 */
-		regs->orig_ax = (long) (s32) value;
+		regs->orig_ax = value;
+		if (syscall_get_nr(child, regs) >= 0)
+			task_thread_info(child)->status |= TS_COMPAT;
 		break;
 
 	case offsetof(struct user32, regs.eflags):
@@ -1497,8 +1493,8 @@ asmregparm long syscall_trace_enter(struct pt_regs *regs)
 	    tracehook_report_syscall_entry(regs))
 		ret = -1L;
 
-	if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
-		ftrace_syscall_enter(regs);
+	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
+		trace_sys_enter(regs, regs->orig_ax);
 
 	if (unlikely(current->audit_context)) {
 		if (IS_IA32)
@@ -1523,8 +1519,8 @@ asmregparm void syscall_trace_leave(struct pt_regs *regs)
 	if (unlikely(current->audit_context))
 		audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
 
-	if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
-		ftrace_syscall_exit(regs);
+	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
+		trace_sys_exit(regs, regs->ax);
 
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		tracehook_report_syscall_exit(regs, 0);
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
index af71d06624b..6c3b2c6fd77 100644
--- a/arch/x86/kernel/quirks.c
+++ b/arch/x86/kernel/quirks.c
@@ -508,7 +508,7 @@ static void __init quirk_amd_nb_node(struct pci_dev *dev)
 
 	pci_read_config_dword(nb_ht, 0x60, &val);
 	set_dev_node(&dev->dev, val & 7);
-	pci_dev_put(dev);
+	pci_dev_put(nb_ht);
 }
 
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index a06e8d10184..27349f92a6d 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -4,6 +4,7 @@
 #include <linux/pm.h>
 #include <linux/efi.h>
 #include <linux/dmi.h>
+#include <linux/tboot.h>
 #include <acpi/reboot.h>
 #include <asm/io.h>
 #include <asm/apic.h>
@@ -508,6 +509,8 @@ static void native_machine_emergency_restart(void)
 	if (reboot_emergency)
 		emergency_vmx_disable_all();
 
+	tboot_shutdown(TB_SHUTDOWN_REBOOT);
+
 	/* Tell the BIOS if we want cold or warm reboot */
 	*((unsigned short *)__va(0x472)) = reboot_mode;
 
@@ -634,6 +637,8 @@ static void native_machine_halt(void)
 	/* stop other cpus and apics */
 	machine_shutdown();
 
+	tboot_shutdown(TB_SHUTDOWN_HALT);
+
 	/* stop this cpu */
 	stop_this_cpu(NULL);
 }
@@ -645,6 +650,8 @@ static void native_machine_power_off(void)
 			machine_shutdown();
 		pm_power_off();
 	}
+	/* a fallback in case there is no PM info available */
+	tboot_shutdown(TB_SHUTDOWN_HALT);
 }
 
 struct machine_ops machine_ops = {
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 5d465b207e7..1cfbbfc3ae2 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -8,6 +8,7 @@
 #include <linux/pnp.h>
 
 #include <asm/vsyscall.h>
+#include <asm/x86_init.h>
 #include <asm/time.h>
 
 #ifdef CONFIG_X86_32
@@ -165,33 +166,29 @@ void rtc_cmos_write(unsigned char val, unsigned char addr)
 }
 EXPORT_SYMBOL(rtc_cmos_write);
 
-static int set_rtc_mmss(unsigned long nowtime)
+int update_persistent_clock(struct timespec now)
 {
 	unsigned long flags;
 	int retval;
 
 	spin_lock_irqsave(&rtc_lock, flags);
-	retval = set_wallclock(nowtime);
+	retval = x86_platform.set_wallclock(now.tv_sec);
 	spin_unlock_irqrestore(&rtc_lock, flags);
 
 	return retval;
 }
 
 /* not static: needed by APM */
-unsigned long read_persistent_clock(void)
+void read_persistent_clock(struct timespec *ts)
 {
 	unsigned long retval, flags;
 
 	spin_lock_irqsave(&rtc_lock, flags);
-	retval = get_wallclock();
+	retval = x86_platform.get_wallclock();
 	spin_unlock_irqrestore(&rtc_lock, flags);
 
-	return retval;
-}
-
-int update_persistent_clock(struct timespec now)
-{
-	return set_rtc_mmss(now.tv_sec);
+	ts->tv_sec = retval;
+	ts->tv_nsec = 0;
 }
 
 unsigned long long native_read_tsc(void)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 63f32d220ef..e09f0e2c14b 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -27,6 +27,7 @@
 #include <linux/screen_info.h>
 #include <linux/ioport.h>
 #include <linux/acpi.h>
+#include <linux/sfi.h>
 #include <linux/apm_bios.h>
 #include <linux/initrd.h>
 #include <linux/bootmem.h>
@@ -66,6 +67,7 @@
 
 #include <linux/percpu.h>
 #include <linux/crash_dump.h>
+#include <linux/tboot.h>
 
 #include <video/edid.h>
 
@@ -108,10 +110,6 @@
 #include <asm/numa_64.h>
 #endif
 
-#ifndef ARCH_SETUP
-#define ARCH_SETUP
-#endif
-
 /*
  * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
  * The direct mapping extends to max_pfn_mapped, so that we can directly access
@@ -133,9 +131,9 @@ int default_cpu_present_to_apicid(int mps_cpu)
 	return __default_cpu_present_to_apicid(mps_cpu);
 }
 
-int default_check_phys_apicid_present(int boot_cpu_physical_apicid)
+int default_check_phys_apicid_present(int phys_apicid)
 {
-	return __default_check_phys_apicid_present(boot_cpu_physical_apicid);
+	return __default_check_phys_apicid_present(phys_apicid);
 }
 #endif
 
@@ -171,13 +169,6 @@ static struct resource bss_resource = {
 
 
 #ifdef CONFIG_X86_32
-static struct resource video_ram_resource = {
-	.name	= "Video RAM area",
-	.start	= 0xa0000,
-	.end	= 0xbffff,
-	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM
-};
-
 /* cpu data as detected by the assembly code in head.S */
 struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1};
 /* common cpu data for all cpus */
@@ -605,7 +596,7 @@ static struct resource standard_io_resources[] = {
 		.flags = IORESOURCE_BUSY | IORESOURCE_IO }
 };
 
-static void __init reserve_standard_io_resources(void)
+void __init reserve_standard_io_resources(void)
 {
 	int i;
 
@@ -637,10 +628,6 @@ static int __init setup_elfcorehdr(char *arg)
 early_param("elfcorehdr", setup_elfcorehdr);
 #endif
 
-static struct x86_quirks default_x86_quirks __initdata;
-
-struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
-
 #ifdef CONFIG_X86_RESERVE_LOW_64K
 static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
 {
@@ -757,7 +744,7 @@ void __init setup_arch(char **cmdline_p)
 	}
 #endif
 
-	ARCH_SETUP
+	x86_init.oem.arch_setup();
 
 	setup_memory_map();
 	parse_setup_data();
@@ -796,6 +783,16 @@ void __init setup_arch(char **cmdline_p)
 	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 
+#ifdef CONFIG_X86_64
+	/*
+	 * Must call this twice: Once just to detect whether hardware doesn't
+	 * support NX (so that the early EHCI debug console setup can safely
+	 * call set_fixmap(), and then again after parsing early parameters to
+	 * honor the respective command line option.
+	 */
+	check_efer();
+#endif
+
 	parse_early_param();
 
 #ifdef CONFIG_X86_64
@@ -833,11 +830,9 @@ void __init setup_arch(char **cmdline_p)
 	 * VMware detection requires dmi to be available, so this
 	 * needs to be done after dmi_scan_machine, for the BP.
 	 */
-	init_hypervisor(&boot_cpu_data);
+	init_hypervisor_platform();
 
-#ifdef CONFIG_X86_32
-	probe_roms();
-#endif
+	x86_init.resources.probe_roms();
 
 	/* after parse_early_param, so could debug it */
 	insert_resource(&iomem_resource, &code_resource);
@@ -972,10 +967,11 @@ void __init setup_arch(char **cmdline_p)
 	kvmclock_init();
 #endif
 
-	paravirt_pagetable_setup_start(swapper_pg_dir);
+	x86_init.paging.pagetable_setup_start(swapper_pg_dir);
 	paging_init();
-	paravirt_pagetable_setup_done(swapper_pg_dir);
-	paravirt_post_allocator_init();
+	x86_init.paging.pagetable_setup_done(swapper_pg_dir);
+
+	tboot_probe();
 
 #ifdef CONFIG_X86_64
 	map_vsyscall();
@@ -990,13 +986,13 @@ void __init setup_arch(char **cmdline_p)
 	 */
 	acpi_boot_init();
 
-#if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
+	sfi_init();
+
 	/*
 	 * get boot-time SMP configuration:
 	 */
 	if (smp_found_config)
 		get_smp_config();
-#endif
 
 	prefill_possible_map();
 
@@ -1015,10 +1011,7 @@ void __init setup_arch(char **cmdline_p)
 	e820_reserve_resources();
 	e820_mark_nosave_regions(max_low_pfn);
 
-#ifdef CONFIG_X86_32
-	request_resource(&iomem_resource, &video_ram_resource);
-#endif
-	reserve_standard_io_resources();
+	x86_init.resources.reserve_resources();
 
 	e820_setup_gap();
 
@@ -1030,78 +1023,22 @@ void __init setup_arch(char **cmdline_p)
 	conswitchp = &dummy_con;
 #endif
 #endif
+	x86_init.oem.banner();
 }
 
 #ifdef CONFIG_X86_32
 
-/**
- * x86_quirk_intr_init - post gate setup interrupt initialisation
- *
- * Description:
- *	Fill in any interrupts that may have been left out by the general
- *	init_IRQ() routine.  interrupts having to do with the machine rather
- *	than the devices on the I/O bus (like APIC interrupts in intel MP
- *	systems) are started here.
- **/
-void __init x86_quirk_intr_init(void)
-{
-	if (x86_quirks->arch_intr_init) {
-		if (x86_quirks->arch_intr_init())
-			return;
-	}
-}
-
-/**
- * x86_quirk_trap_init - initialise system specific traps
- *
- * Description:
- *	Called as the final act of trap_init().  Used in VISWS to initialise
- *	the various board specific APIC traps.
- **/
-void __init x86_quirk_trap_init(void)
-{
-	if (x86_quirks->arch_trap_init) {
-		if (x86_quirks->arch_trap_init())
-			return;
-	}
-}
-
-static struct irqaction irq0  = {
-	.handler = timer_interrupt,
-	.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
-	.name = "timer"
+static struct resource video_ram_resource = {
+	.name	= "Video RAM area",
+	.start	= 0xa0000,
+	.end	= 0xbffff,
+	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM
 };
 
-/**
- * x86_quirk_pre_time_init - do any specific initialisations before.
- *
- **/
-void __init x86_quirk_pre_time_init(void)
+void __init i386_reserve_resources(void)
 {
-	if (x86_quirks->arch_pre_time_init)
-		x86_quirks->arch_pre_time_init();
+	request_resource(&iomem_resource, &video_ram_resource);
+	reserve_standard_io_resources();
 }
 
-/**
- * x86_quirk_time_init - do any specific initialisations for the system timer.
- *
- * Description:
- *	Must plug the system timer interrupt source at HZ into the IRQ listed
- *	in irq_vectors.h:TIMER_IRQ
- **/
-void __init x86_quirk_time_init(void)
-{
-	if (x86_quirks->arch_time_init) {
-		/*
-		 * A nonzero return code does not mean failure, it means
-		 * that the architecture quirk does not want any
-		 * generic (timer) setup to be performed after this:
-		 */
-		if (x86_quirks->arch_time_init())
-			return;
-	}
-
-	irq0.mask = cpumask_of_cpu(0);
-	setup_irq(0, &irq0);
-}
 #endif /* CONFIG_X86_32 */
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 07d81916f21..d559af913e1 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -55,6 +55,7 @@ EXPORT_SYMBOL(__per_cpu_offset);
 #define PERCPU_FIRST_CHUNK_RESERVE	0
 #endif
 
+#ifdef CONFIG_X86_32
 /**
  * pcpu_need_numa - determine percpu allocation needs to consider NUMA
  *
@@ -83,6 +84,7 @@ static bool __init pcpu_need_numa(void)
 #endif
 	return false;
 }
+#endif
 
 /**
  * pcpu_alloc_bootmem - NUMA friendly alloc_bootmem wrapper for percpu
@@ -124,308 +126,35 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size,
 }
 
 /*
- * Large page remap allocator
- *
- * This allocator uses PMD page as unit.  A PMD page is allocated for
- * each cpu and each is remapped into vmalloc area using PMD mapping.
- * As PMD page is quite large, only part of it is used for the first
- * chunk.  Unused part is returned to the bootmem allocator.
- *
- * So, the PMD pages are mapped twice - once to the physical mapping
- * and to the vmalloc area for the first percpu chunk.  The double
- * mapping does add one more PMD TLB entry pressure but still is much
- * better than only using 4k mappings while still being NUMA friendly.
+ * Helpers for first chunk memory allocation
  */
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-struct pcpul_ent {
-	unsigned int	cpu;
-	void		*ptr;
-};
-
-static size_t pcpul_size;
-static struct pcpul_ent *pcpul_map;
-static struct vm_struct pcpul_vm;
-
-static struct page * __init pcpul_get_page(unsigned int cpu, int pageno)
+static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size, size_t align)
 {
-	size_t off = (size_t)pageno << PAGE_SHIFT;
-
-	if (off >= pcpul_size)
-		return NULL;
-
-	return virt_to_page(pcpul_map[cpu].ptr + off);
+	return pcpu_alloc_bootmem(cpu, size, align);
 }
 
-static ssize_t __init setup_pcpu_lpage(size_t static_size, bool chosen)
+static void __init pcpu_fc_free(void *ptr, size_t size)
 {
-	size_t map_size, dyn_size;
-	unsigned int cpu;
-	int i, j;
-	ssize_t ret;
-
-	if (!chosen) {
-		size_t vm_size = VMALLOC_END - VMALLOC_START;
-		size_t tot_size = nr_cpu_ids * PMD_SIZE;
-
-		/* on non-NUMA, embedding is better */
-		if (!pcpu_need_numa())
-			return -EINVAL;
-
-		/* don't consume more than 20% of vmalloc area */
-		if (tot_size > vm_size / 5) {
-			pr_info("PERCPU: too large chunk size %zuMB for "
-				"large page remap\n", tot_size >> 20);
-			return -EINVAL;
-		}
-	}
-
-	/* need PSE */
-	if (!cpu_has_pse) {
-		pr_warning("PERCPU: lpage allocator requires PSE\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Currently supports only single page.  Supporting multiple
-	 * pages won't be too difficult if it ever becomes necessary.
-	 */
-	pcpul_size = PFN_ALIGN(static_size + PERCPU_MODULE_RESERVE +
-			       PERCPU_DYNAMIC_RESERVE);
-	if (pcpul_size > PMD_SIZE) {
-		pr_warning("PERCPU: static data is larger than large page, "
-			   "can't use large page\n");
-		return -EINVAL;
-	}
-	dyn_size = pcpul_size - static_size - PERCPU_FIRST_CHUNK_RESERVE;
-
-	/* allocate pointer array and alloc large pages */
-	map_size = PFN_ALIGN(nr_cpu_ids * sizeof(pcpul_map[0]));
-	pcpul_map = alloc_bootmem(map_size);
-
-	for_each_possible_cpu(cpu) {
-		pcpul_map[cpu].cpu = cpu;
-		pcpul_map[cpu].ptr = pcpu_alloc_bootmem(cpu, PMD_SIZE,
-							PMD_SIZE);
-		if (!pcpul_map[cpu].ptr) {
-			pr_warning("PERCPU: failed to allocate large page "
-				   "for cpu%u\n", cpu);
-			goto enomem;
-		}
-
-		/*
-		 * Only use pcpul_size bytes and give back the rest.
-		 *
-		 * Ingo: The 2MB up-rounding bootmem is needed to make
-		 * sure the partial 2MB page is still fully RAM - it's
-		 * not well-specified to have a PAT-incompatible area
-		 * (unmapped RAM, device memory, etc.) in that hole.
-		 */
-		free_bootmem(__pa(pcpul_map[cpu].ptr + pcpul_size),
-			     PMD_SIZE - pcpul_size);
-
-		memcpy(pcpul_map[cpu].ptr, __per_cpu_load, static_size);
-	}
-
-	/* allocate address and map */
-	pcpul_vm.flags = VM_ALLOC;
-	pcpul_vm.size = nr_cpu_ids * PMD_SIZE;
-	vm_area_register_early(&pcpul_vm, PMD_SIZE);
-
-	for_each_possible_cpu(cpu) {
-		pmd_t *pmd, pmd_v;
-
-		pmd = populate_extra_pmd((unsigned long)pcpul_vm.addr +
-					 cpu * PMD_SIZE);
-		pmd_v = pfn_pmd(page_to_pfn(virt_to_page(pcpul_map[cpu].ptr)),
-				PAGE_KERNEL_LARGE);
-		set_pmd(pmd, pmd_v);
-	}
-
-	/* we're ready, commit */
-	pr_info("PERCPU: Remapped at %p with large pages, static data "
-		"%zu bytes\n", pcpul_vm.addr, static_size);
-
-	ret = pcpu_setup_first_chunk(pcpul_get_page, static_size,
-				     PERCPU_FIRST_CHUNK_RESERVE, dyn_size,
-				     PMD_SIZE, pcpul_vm.addr, NULL);
-
-	/* sort pcpul_map array for pcpu_lpage_remapped() */
-	for (i = 0; i < nr_cpu_ids - 1; i++)
-		for (j = i + 1; j < nr_cpu_ids; j++)
-			if (pcpul_map[i].ptr > pcpul_map[j].ptr) {
-				struct pcpul_ent tmp = pcpul_map[i];
-				pcpul_map[i] = pcpul_map[j];
-				pcpul_map[j] = tmp;
-			}
-
-	return ret;
-
-enomem:
-	for_each_possible_cpu(cpu)
-		if (pcpul_map[cpu].ptr)
-			free_bootmem(__pa(pcpul_map[cpu].ptr), pcpul_size);
-	free_bootmem(__pa(pcpul_map), map_size);
-	return -ENOMEM;
+	free_bootmem(__pa(ptr), size);
 }
 
-/**
- * pcpu_lpage_remapped - determine whether a kaddr is in pcpul recycled area
- * @kaddr: the kernel address in question
- *
- * Determine whether @kaddr falls in the pcpul recycled area.  This is
- * used by pageattr to detect VM aliases and break up the pcpu PMD
- * mapping such that the same physical page is not mapped under
- * different attributes.
- *
- * The recycled area is always at the tail of a partially used PMD
- * page.
- *
- * RETURNS:
- * Address of corresponding remapped pcpu address if match is found;
- * otherwise, NULL.
- */
-void *pcpu_lpage_remapped(void *kaddr)
+static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
 {
-	void *pmd_addr = (void *)((unsigned long)kaddr & PMD_MASK);
-	unsigned long offset = (unsigned long)kaddr & ~PMD_MASK;
-	int left = 0, right = nr_cpu_ids - 1;
-	int pos;
-
-	/* pcpul in use at all? */
-	if (!pcpul_map)
-		return NULL;
-
-	/* okay, perform binary search */
-	while (left <= right) {
-		pos = (left + right) / 2;
-
-		if (pcpul_map[pos].ptr < pmd_addr)
-			left = pos + 1;
-		else if (pcpul_map[pos].ptr > pmd_addr)
-			right = pos - 1;
-		else {
-			/* it shouldn't be in the area for the first chunk */
-			WARN_ON(offset < pcpul_size);
-
-			return pcpul_vm.addr +
-				pcpul_map[pos].cpu * PMD_SIZE + offset;
-		}
-	}
-
-	return NULL;
-}
+#ifdef CONFIG_NEED_MULTIPLE_NODES
+	if (early_cpu_to_node(from) == early_cpu_to_node(to))
+		return LOCAL_DISTANCE;
+	else
+		return REMOTE_DISTANCE;
 #else
-static ssize_t __init setup_pcpu_lpage(size_t static_size, bool chosen)
-{
-	return -EINVAL;
-}
+	return LOCAL_DISTANCE;
 #endif
-
-/*
- * Embedding allocator
- *
- * The first chunk is sized to just contain the static area plus
- * module and dynamic reserves and embedded into linear physical
- * mapping so that it can use PMD mapping without additional TLB
- * pressure.
- */
-static ssize_t __init setup_pcpu_embed(size_t static_size, bool chosen)
-{
-	size_t reserve = PERCPU_MODULE_RESERVE + PERCPU_DYNAMIC_RESERVE;
-
-	/*
-	 * If large page isn't supported, there's no benefit in doing
-	 * this.  Also, embedding allocation doesn't play well with
-	 * NUMA.
-	 */
-	if (!chosen && (!cpu_has_pse || pcpu_need_numa()))
-		return -EINVAL;
-
-	return pcpu_embed_first_chunk(static_size, PERCPU_FIRST_CHUNK_RESERVE,
-				      reserve - PERCPU_FIRST_CHUNK_RESERVE, -1);
 }
 
-/*
- * 4k page allocator
- *
- * This is the basic allocator.  Static percpu area is allocated
- * page-by-page and most of initialization is done by the generic
- * setup function.
- */
-static struct page **pcpu4k_pages __initdata;
-static int pcpu4k_nr_static_pages __initdata;
-
-static struct page * __init pcpu4k_get_page(unsigned int cpu, int pageno)
-{
-	if (pageno < pcpu4k_nr_static_pages)
-		return pcpu4k_pages[cpu * pcpu4k_nr_static_pages + pageno];
-	return NULL;
-}
-
-static void __init pcpu4k_populate_pte(unsigned long addr)
+static void __init pcpup_populate_pte(unsigned long addr)
 {
 	populate_extra_pte(addr);
 }
 
-static ssize_t __init setup_pcpu_4k(size_t static_size)
-{
-	size_t pages_size;
-	unsigned int cpu;
-	int i, j;
-	ssize_t ret;
-
-	pcpu4k_nr_static_pages = PFN_UP(static_size);
-
-	/* unaligned allocations can't be freed, round up to page size */
-	pages_size = PFN_ALIGN(pcpu4k_nr_static_pages * nr_cpu_ids
-			       * sizeof(pcpu4k_pages[0]));
-	pcpu4k_pages = alloc_bootmem(pages_size);
-
-	/* allocate and copy */
-	j = 0;
-	for_each_possible_cpu(cpu)
-		for (i = 0; i < pcpu4k_nr_static_pages; i++) {
-			void *ptr;
-
-			ptr = pcpu_alloc_bootmem(cpu, PAGE_SIZE, PAGE_SIZE);
-			if (!ptr) {
-				pr_warning("PERCPU: failed to allocate "
-					   "4k page for cpu%u\n", cpu);
-				goto enomem;
-			}
-
-			memcpy(ptr, __per_cpu_load + i * PAGE_SIZE, PAGE_SIZE);
-			pcpu4k_pages[j++] = virt_to_page(ptr);
-		}
-
-	/* we're ready, commit */
-	pr_info("PERCPU: Allocated %d 4k pages, static data %zu bytes\n",
-		pcpu4k_nr_static_pages, static_size);
-
-	ret = pcpu_setup_first_chunk(pcpu4k_get_page, static_size,
-				     PERCPU_FIRST_CHUNK_RESERVE, -1,
-				     -1, NULL, pcpu4k_populate_pte);
-	goto out_free_ar;
-
-enomem:
-	while (--j >= 0)
-		free_bootmem(__pa(page_address(pcpu4k_pages[j])), PAGE_SIZE);
-	ret = -ENOMEM;
-out_free_ar:
-	free_bootmem(__pa(pcpu4k_pages), pages_size);
-	return ret;
-}
-
-/* for explicit first chunk allocator selection */
-static char pcpu_chosen_alloc[16] __initdata;
-
-static int __init percpu_alloc_setup(char *str)
-{
-	strncpy(pcpu_chosen_alloc, str, sizeof(pcpu_chosen_alloc) - 1);
-	return 0;
-}
-early_param("percpu_alloc", percpu_alloc_setup);
-
 static inline void setup_percpu_segment(int cpu)
 {
 #ifdef CONFIG_X86_32
@@ -441,52 +170,49 @@ static inline void setup_percpu_segment(int cpu)
 
 void __init setup_per_cpu_areas(void)
 {
-	size_t static_size = __per_cpu_end - __per_cpu_start;
 	unsigned int cpu;
 	unsigned long delta;
-	size_t pcpu_unit_size;
-	ssize_t ret;
+	int rc;
 
 	pr_info("NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%d nr_node_ids:%d\n",
 		NR_CPUS, nr_cpumask_bits, nr_cpu_ids, nr_node_ids);
 
 	/*
-	 * Allocate percpu area.  If PSE is supported, try to make use
-	 * of large page mappings.  Please read comments on top of
-	 * each allocator for details.
+	 * Allocate percpu area.  Embedding allocator is our favorite;
+	 * however, on NUMA configurations, it can result in very
+	 * sparse unit mapping and vmalloc area isn't spacious enough
+	 * on 32bit.  Use page in that case.
 	 */
-	ret = -EINVAL;
-	if (strlen(pcpu_chosen_alloc)) {
-		if (strcmp(pcpu_chosen_alloc, "4k")) {
-			if (!strcmp(pcpu_chosen_alloc, "lpage"))
-				ret = setup_pcpu_lpage(static_size, true);
-			else if (!strcmp(pcpu_chosen_alloc, "embed"))
-				ret = setup_pcpu_embed(static_size, true);
-			else
-				pr_warning("PERCPU: unknown allocator %s "
-					   "specified\n", pcpu_chosen_alloc);
-			if (ret < 0)
-				pr_warning("PERCPU: %s allocator failed (%zd), "
-					   "falling back to 4k\n",
-					   pcpu_chosen_alloc, ret);
-		}
-	} else {
-		ret = setup_pcpu_lpage(static_size, false);
-		if (ret < 0)
-			ret = setup_pcpu_embed(static_size, false);
+#ifdef CONFIG_X86_32
+	if (pcpu_chosen_fc == PCPU_FC_AUTO && pcpu_need_numa())
+		pcpu_chosen_fc = PCPU_FC_PAGE;
+#endif
+	rc = -EINVAL;
+	if (pcpu_chosen_fc != PCPU_FC_PAGE) {
+		const size_t atom_size = cpu_has_pse ? PMD_SIZE : PAGE_SIZE;
+		const size_t dyn_size = PERCPU_MODULE_RESERVE +
+			PERCPU_DYNAMIC_RESERVE - PERCPU_FIRST_CHUNK_RESERVE;
+
+		rc = pcpu_embed_first_chunk(PERCPU_FIRST_CHUNK_RESERVE,
+					    dyn_size, atom_size,
+					    pcpu_cpu_distance,
+					    pcpu_fc_alloc, pcpu_fc_free);
+		if (rc < 0)
+			pr_warning("PERCPU: %s allocator failed (%d), "
+				   "falling back to page size\n",
+				   pcpu_fc_names[pcpu_chosen_fc], rc);
 	}
-	if (ret < 0)
-		ret = setup_pcpu_4k(static_size);
-	if (ret < 0)
-		panic("cannot allocate static percpu area (%zu bytes, err=%zd)",
-		      static_size, ret);
-
-	pcpu_unit_size = ret;
+	if (rc < 0)
+		rc = pcpu_page_first_chunk(PERCPU_FIRST_CHUNK_RESERVE,
+					   pcpu_fc_alloc, pcpu_fc_free,
+					   pcpup_populate_pte);
+	if (rc < 0)
+		panic("cannot initialize percpu area (err=%d)", rc);
 
 	/* alrighty, percpu areas up and running */
 	delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
 	for_each_possible_cpu(cpu) {
-		per_cpu_offset(cpu) = delta + cpu * pcpu_unit_size;
+		per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
 		per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
 		per_cpu(cpu_number, cpu) = cpu;
 		setup_percpu_segment(cpu);
diff --git a/arch/x86/kernel/sfi.c b/arch/x86/kernel/sfi.c
new file mode 100644
index 00000000000..34e09938265
--- /dev/null
+++ b/arch/x86/kernel/sfi.c
@@ -0,0 +1,122 @@
+/*
+ * sfi.c - x86 architecture SFI support.
+ *
+ * Copyright (c) 2009, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#define KMSG_COMPONENT "SFI"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/sfi.h>
+#include <linux/io.h>
+
+#include <asm/io_apic.h>
+#include <asm/mpspec.h>
+#include <asm/setup.h>
+#include <asm/apic.h>
+
+#ifdef CONFIG_X86_LOCAL_APIC
+static unsigned long sfi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
+
+void __init mp_sfi_register_lapic_address(unsigned long address)
+{
+	mp_lapic_addr = address;
+
+	set_fixmap_nocache(FIX_APIC_BASE, mp_lapic_addr);
+	if (boot_cpu_physical_apicid == -1U)
+		boot_cpu_physical_apicid = read_apic_id();
+
+	pr_info("Boot CPU = %d\n", boot_cpu_physical_apicid);
+}
+
+/* All CPUs enumerated by SFI must be present and enabled */
+void __cpuinit mp_sfi_register_lapic(u8 id)
+{
+	if (MAX_APICS - id <= 0) {
+		pr_warning("Processor #%d invalid (max %d)\n",
+			id, MAX_APICS);
+		return;
+	}
+
+	pr_info("registering lapic[%d]\n", id);
+
+	generic_processor_info(id, GET_APIC_VERSION(apic_read(APIC_LVR)));
+}
+
+static int __init sfi_parse_cpus(struct sfi_table_header *table)
+{
+	struct sfi_table_simple *sb;
+	struct sfi_cpu_table_entry *pentry;
+	int i;
+	int cpu_num;
+
+	sb = (struct sfi_table_simple *)table;
+	cpu_num = SFI_GET_NUM_ENTRIES(sb, struct sfi_cpu_table_entry);
+	pentry = (struct sfi_cpu_table_entry *)sb->pentry;
+
+	for (i = 0; i < cpu_num; i++) {
+		mp_sfi_register_lapic(pentry->apic_id);
+		pentry++;
+	}
+
+	smp_found_config = 1;
+	return 0;
+}
+#endif /* CONFIG_X86_LOCAL_APIC */
+
+#ifdef CONFIG_X86_IO_APIC
+static u32 gsi_base;
+
+static int __init sfi_parse_ioapic(struct sfi_table_header *table)
+{
+	struct sfi_table_simple *sb;
+	struct sfi_apic_table_entry *pentry;
+	int i, num;
+
+	sb = (struct sfi_table_simple *)table;
+	num = SFI_GET_NUM_ENTRIES(sb, struct sfi_apic_table_entry);
+	pentry = (struct sfi_apic_table_entry *)sb->pentry;
+
+	for (i = 0; i < num; i++) {
+		mp_register_ioapic(i, pentry->phys_addr, gsi_base);
+		gsi_base += io_apic_get_redir_entries(i);
+		pentry++;
+	}
+
+	WARN(pic_mode, KERN_WARNING
+		"SFI: pic_mod shouldn't be 1 when IOAPIC table is present\n");
+	pic_mode = 0;
+	return 0;
+}
+#endif /* CONFIG_X86_IO_APIC */
+
+/*
+ * sfi_platform_init(): register lapics & io-apics
+ */
+int __init sfi_platform_init(void)
+{
+#ifdef CONFIG_X86_LOCAL_APIC
+	mp_sfi_register_lapic_address(sfi_lapic_addr);
+	sfi_table_parse(SFI_SIG_CPUS, NULL, NULL, sfi_parse_cpus);
+#endif
+#ifdef CONFIG_X86_IO_APIC
+	sfi_table_parse(SFI_SIG_APIC, NULL, NULL, sfi_parse_ioapic);
+#endif
+	return 0;
+}
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 4c578751e94..6a44a76055a 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -856,7 +856,7 @@ static void do_signal(struct pt_regs *regs)
 void
 do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
 {
-#ifdef CONFIG_X86_NEW_MCE
+#ifdef CONFIG_X86_MCE
 	/* notify userspace of pending MCEs */
 	if (thread_info_flags & _TIF_MCE_NOTIFY)
 		mce_notify_process();
@@ -869,6 +869,8 @@ do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags)
 	if (thread_info_flags & _TIF_NOTIFY_RESUME) {
 		clear_thread_flag(TIF_NOTIFY_RESUME);
 		tracehook_notify_resume(regs);
+		if (current->replacement_session_keyring)
+			key_replace_session_keyring();
 	}
 
 #ifdef CONFIG_X86_32
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 2fecda69ee6..565ebc65920 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -47,6 +47,7 @@
 #include <linux/bootmem.h>
 #include <linux/err.h>
 #include <linux/nmi.h>
+#include <linux/tboot.h>
 
 #include <asm/acpi.h>
 #include <asm/desc.h>
@@ -323,7 +324,7 @@ notrace static void __cpuinit start_secondary(void *unused)
 	/* enable local interrupts */
 	local_irq_enable();
 
-	setup_secondary_clock();
+	x86_cpuinit.setup_percpu_clockev();
 
 	wmb();
 	cpu_idle();
@@ -434,7 +435,8 @@ const struct cpumask *cpu_coregroup_mask(int cpu)
 	 * For perf, we return last level cache shared map.
 	 * And for power savings, we return cpu_core_map
 	 */
-	if (sched_mc_power_savings || sched_smt_power_savings)
+	if ((sched_mc_power_savings || sched_smt_power_savings) &&
+	    !(cpu_has(c, X86_FEATURE_AMD_DCM)))
 		return cpu_core_mask(cpu);
 	else
 		return c->llc_shared_map;
@@ -1057,12 +1059,9 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 #endif
 	current_thread_info()->cpu = 0;  /* needed? */
 	for_each_possible_cpu(i) {
-		alloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
-		alloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
-		alloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
-		cpumask_clear(per_cpu(cpu_core_map, i));
-		cpumask_clear(per_cpu(cpu_sibling_map, i));
-		cpumask_clear(cpu_data(i).llc_shared_map);
+		zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
+		zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
+		zalloc_cpumask_var(&cpu_data(i).llc_shared_map, GFP_KERNEL);
 	}
 	set_cpu_sibling_map(0);
 
@@ -1112,13 +1111,26 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 
 	printk(KERN_INFO "CPU%d: ", 0);
 	print_cpu_info(&cpu_data(0));
-	setup_boot_clock();
+	x86_init.timers.setup_percpu_clockev();
 
 	if (is_uv_system())
 		uv_system_init();
+
+	set_mtrr_aps_delayed_init();
 out:
 	preempt_enable();
 }
+
+void arch_enable_nonboot_cpus_begin(void)
+{
+	set_mtrr_aps_delayed_init();
+}
+
+void arch_enable_nonboot_cpus_end(void)
+{
+	mtrr_aps_init();
+}
+
 /*
  * Early setup to make printk work.
  */
@@ -1140,6 +1152,7 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
 	setup_ioapic_dest();
 #endif
 	check_nmi_watchdog();
+	mtrr_aps_init();
 }
 
 static int __initdata setup_possible_cpus = -1;
@@ -1317,6 +1330,7 @@ void play_dead_common(void)
 void native_play_dead(void)
 {
 	play_dead_common();
+	tboot_shutdown(TB_SHUTDOWN_WFS);
 	wbinvd_halt();
 }
 
diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
index e8b9863ef8c..3149032ff10 100644
--- a/arch/x86/kernel/step.c
+++ b/arch/x86/kernel/step.c
@@ -4,6 +4,7 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/ptrace.h>
+#include <asm/desc.h>
 
 unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs)
 {
@@ -23,7 +24,7 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
 	 * and APM bios ones we just ignore here.
 	 */
 	if ((seg & SEGMENT_TI_MASK) == SEGMENT_LDT) {
-		u32 *desc;
+		struct desc_struct *desc;
 		unsigned long base;
 
 		seg &= ~7UL;
@@ -33,12 +34,10 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
 			addr = -1L; /* bogus selector, access would fault */
 		else {
 			desc = child->mm->context.ldt + seg;
-			base = ((desc[0] >> 16) |
-				((desc[1] & 0xff) << 16) |
-				(desc[1] & 0xff000000));
+			base = get_desc_base(desc);
 
 			/* 16-bit code segment? */
-			if (!((desc[1] >> 22) & 1))
+			if (!desc->d)
 				addr &= 0xffff;
 			addr += base;
 		}
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
index 6bc211accf0..45e00eb09c3 100644
--- a/arch/x86/kernel/sys_x86_64.c
+++ b/arch/x86/kernel/sys_x86_64.c
@@ -18,9 +18,9 @@
 #include <asm/ia32.h>
 #include <asm/syscalls.h>
 
-asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
-		unsigned long prot, unsigned long flags,
-		unsigned long fd, unsigned long off)
+SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
+		unsigned long, prot, unsigned long, flags,
+		unsigned long, fd, unsigned long, off)
 {
 	long error;
 	struct file *file;
@@ -226,7 +226,7 @@ bottomup:
 }
 
 
-asmlinkage long sys_uname(struct new_utsname __user *name)
+SYSCALL_DEFINE1(uname, struct new_utsname __user *, name)
 {
 	int err;
 	down_read(&uts_sem);
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index d51321ddafd..0157cd26d7c 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -335,4 +335,4 @@ ENTRY(sys_call_table)
 	.long sys_preadv
 	.long sys_pwritev
 	.long sys_rt_tgsigqueueinfo	/* 335 */
-	.long sys_perf_counter_open
+	.long sys_perf_event_open
diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
new file mode 100644
index 00000000000..86c9f91b48a
--- /dev/null
+++ b/arch/x86/kernel/tboot.c
@@ -0,0 +1,447 @@
+/*
+ * tboot.c: main implementation of helper functions used by kernel for
+ *          runtime support of Intel(R) Trusted Execution Technology
+ *
+ * Copyright (c) 2006-2009, Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/dma_remapping.h>
+#include <linux/init_task.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/dmar.h>
+#include <linux/cpu.h>
+#include <linux/pfn.h>
+#include <linux/mm.h>
+#include <linux/tboot.h>
+
+#include <asm/trampoline.h>
+#include <asm/processor.h>
+#include <asm/bootparam.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/fixmap.h>
+#include <asm/proto.h>
+#include <asm/setup.h>
+#include <asm/e820.h>
+#include <asm/io.h>
+
+#include "acpi/realmode/wakeup.h"
+
+/* Global pointer to shared data; NULL means no measured launch. */
+struct tboot *tboot __read_mostly;
+
+/* timeout for APs (in secs) to enter wait-for-SIPI state during shutdown */
+#define AP_WAIT_TIMEOUT		1
+
+#undef pr_fmt
+#define pr_fmt(fmt)	"tboot: " fmt
+
+static u8 tboot_uuid[16] __initdata = TBOOT_UUID;
+
+void __init tboot_probe(void)
+{
+	/* Look for valid page-aligned address for shared page. */
+	if (!boot_params.tboot_addr)
+		return;
+	/*
+	 * also verify that it is mapped as we expect it before calling
+	 * set_fixmap(), to reduce chance of garbage value causing crash
+	 */
+	if (!e820_any_mapped(boot_params.tboot_addr,
+			     boot_params.tboot_addr, E820_RESERVED)) {
+		pr_warning("non-0 tboot_addr but it is not of type E820_RESERVED\n");
+		return;
+	}
+
+	/* only a natively booted kernel should be using TXT */
+	if (paravirt_enabled()) {
+		pr_warning("non-0 tboot_addr but pv_ops is enabled\n");
+		return;
+	}
+
+	/* Map and check for tboot UUID. */
+	set_fixmap(FIX_TBOOT_BASE, boot_params.tboot_addr);
+	tboot = (struct tboot *)fix_to_virt(FIX_TBOOT_BASE);
+	if (memcmp(&tboot_uuid, &tboot->uuid, sizeof(tboot->uuid))) {
+		pr_warning("tboot at 0x%llx is invalid\n",
+			   boot_params.tboot_addr);
+		tboot = NULL;
+		return;
+	}
+	if (tboot->version < 5) {
+		pr_warning("tboot version is invalid: %u\n", tboot->version);
+		tboot = NULL;
+		return;
+	}
+
+	pr_info("found shared page at phys addr 0x%llx:\n",
+		boot_params.tboot_addr);
+	pr_debug("version: %d\n", tboot->version);
+	pr_debug("log_addr: 0x%08x\n", tboot->log_addr);
+	pr_debug("shutdown_entry: 0x%x\n", tboot->shutdown_entry);
+	pr_debug("tboot_base: 0x%08x\n", tboot->tboot_base);
+	pr_debug("tboot_size: 0x%x\n", tboot->tboot_size);
+}
+
+static pgd_t *tboot_pg_dir;
+static struct mm_struct tboot_mm = {
+	.mm_rb          = RB_ROOT,
+	.pgd            = swapper_pg_dir,
+	.mm_users       = ATOMIC_INIT(2),
+	.mm_count       = ATOMIC_INIT(1),
+	.mmap_sem       = __RWSEM_INITIALIZER(init_mm.mmap_sem),
+	.page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
+	.mmlist         = LIST_HEAD_INIT(init_mm.mmlist),
+	.cpu_vm_mask    = CPU_MASK_ALL,
+};
+
+static inline void switch_to_tboot_pt(void)
+{
+	write_cr3(virt_to_phys(tboot_pg_dir));
+}
+
+static int map_tboot_page(unsigned long vaddr, unsigned long pfn,
+			  pgprot_t prot)
+{
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+	pte_t *pte;
+
+	pgd = pgd_offset(&tboot_mm, vaddr);
+	pud = pud_alloc(&tboot_mm, pgd, vaddr);
+	if (!pud)
+		return -1;
+	pmd = pmd_alloc(&tboot_mm, pud, vaddr);
+	if (!pmd)
+		return -1;
+	pte = pte_alloc_map(&tboot_mm, pmd, vaddr);
+	if (!pte)
+		return -1;
+	set_pte_at(&tboot_mm, vaddr, pte, pfn_pte(pfn, prot));
+	pte_unmap(pte);
+	return 0;
+}
+
+static int map_tboot_pages(unsigned long vaddr, unsigned long start_pfn,
+			   unsigned long nr)
+{
+	/* Reuse the original kernel mapping */
+	tboot_pg_dir = pgd_alloc(&tboot_mm);
+	if (!tboot_pg_dir)
+		return -1;
+
+	for (; nr > 0; nr--, vaddr += PAGE_SIZE, start_pfn++) {
+		if (map_tboot_page(vaddr, start_pfn, PAGE_KERNEL_EXEC))
+			return -1;
+	}
+
+	return 0;
+}
+
+static void tboot_create_trampoline(void)
+{
+	u32 map_base, map_size;
+
+	/* Create identity map for tboot shutdown code. */
+	map_base = PFN_DOWN(tboot->tboot_base);
+	map_size = PFN_UP(tboot->tboot_size);
+	if (map_tboot_pages(map_base << PAGE_SHIFT, map_base, map_size))
+		panic("tboot: Error mapping tboot pages (mfns) @ 0x%x, 0x%x\n",
+		      map_base, map_size);
+}
+
+#ifdef CONFIG_ACPI_SLEEP
+
+static void add_mac_region(phys_addr_t start, unsigned long size)
+{
+	struct tboot_mac_region *mr;
+	phys_addr_t end = start + size;
+
+	if (start && size) {
+		mr = &tboot->mac_regions[tboot->num_mac_regions++];
+		mr->start = round_down(start, PAGE_SIZE);
+		mr->size  = round_up(end, PAGE_SIZE) - mr->start;
+	}
+}
+
+static int tboot_setup_sleep(void)
+{
+	tboot->num_mac_regions = 0;
+
+	/* S3 resume code */
+	add_mac_region(acpi_wakeup_address, WAKEUP_SIZE);
+
+#ifdef CONFIG_X86_TRAMPOLINE
+	/* AP trampoline code */
+	add_mac_region(virt_to_phys(trampoline_base), TRAMPOLINE_SIZE);
+#endif
+
+	/* kernel code + data + bss */
+	add_mac_region(virt_to_phys(_text), _end - _text);
+
+	tboot->acpi_sinfo.kernel_s3_resume_vector = acpi_wakeup_address;
+
+	return 0;
+}
+
+#else /* no CONFIG_ACPI_SLEEP */
+
+static int tboot_setup_sleep(void)
+{
+	/* S3 shutdown requested, but S3 not supported by the kernel... */
+	BUG();
+	return -1;
+}
+
+#endif
+
+void tboot_shutdown(u32 shutdown_type)
+{
+	void (*shutdown)(void);
+
+	if (!tboot_enabled())
+		return;
+
+	/*
+	 * if we're being called before the 1:1 mapping is set up then just
+	 * return and let the normal shutdown happen; this should only be
+	 * due to very early panic()
+	 */
+	if (!tboot_pg_dir)
+		return;
+
+	/* if this is S3 then set regions to MAC */
+	if (shutdown_type == TB_SHUTDOWN_S3)
+		if (tboot_setup_sleep())
+			return;
+
+	tboot->shutdown_type = shutdown_type;
+
+	switch_to_tboot_pt();
+
+	shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry;
+	shutdown();
+
+	/* should not reach here */
+	while (1)
+		halt();
+}
+
+static void tboot_copy_fadt(const struct acpi_table_fadt *fadt)
+{
+#define TB_COPY_GAS(tbg, g)			\
+	tbg.space_id     = g.space_id;		\
+	tbg.bit_width    = g.bit_width;		\
+	tbg.bit_offset   = g.bit_offset;	\
+	tbg.access_width = g.access_width;	\
+	tbg.address      = g.address;
+
+	TB_COPY_GAS(tboot->acpi_sinfo.pm1a_cnt_blk, fadt->xpm1a_control_block);
+	TB_COPY_GAS(tboot->acpi_sinfo.pm1b_cnt_blk, fadt->xpm1b_control_block);
+	TB_COPY_GAS(tboot->acpi_sinfo.pm1a_evt_blk, fadt->xpm1a_event_block);
+	TB_COPY_GAS(tboot->acpi_sinfo.pm1b_evt_blk, fadt->xpm1b_event_block);
+
+	/*
+	 * We need phys addr of waking vector, but can't use virt_to_phys() on
+	 * &acpi_gbl_FACS because it is ioremap'ed, so calc from FACS phys
+	 * addr.
+	 */
+	tboot->acpi_sinfo.wakeup_vector = fadt->facs +
+		offsetof(struct acpi_table_facs, firmware_waking_vector);
+}
+
+void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control)
+{
+	static u32 acpi_shutdown_map[ACPI_S_STATE_COUNT] = {
+		/* S0,1,2: */ -1, -1, -1,
+		/* S3: */ TB_SHUTDOWN_S3,
+		/* S4: */ TB_SHUTDOWN_S4,
+		/* S5: */ TB_SHUTDOWN_S5 };
+
+	if (!tboot_enabled())
+		return;
+
+	tboot_copy_fadt(&acpi_gbl_FADT);
+	tboot->acpi_sinfo.pm1a_cnt_val = pm1a_control;
+	tboot->acpi_sinfo.pm1b_cnt_val = pm1b_control;
+	/* we always use the 32b wakeup vector */
+	tboot->acpi_sinfo.vector_width = 32;
+
+	if (sleep_state >= ACPI_S_STATE_COUNT ||
+	    acpi_shutdown_map[sleep_state] == -1) {
+		pr_warning("unsupported sleep state 0x%x\n", sleep_state);
+		return;
+	}
+
+	tboot_shutdown(acpi_shutdown_map[sleep_state]);
+}
+
+static atomic_t ap_wfs_count;
+
+static int tboot_wait_for_aps(int num_aps)
+{
+	unsigned long timeout;
+
+	timeout = AP_WAIT_TIMEOUT*HZ;
+	while (atomic_read((atomic_t *)&tboot->num_in_wfs) != num_aps &&
+	       timeout) {
+		mdelay(1);
+		timeout--;
+	}
+
+	if (timeout)
+		pr_warning("tboot wait for APs timeout\n");
+
+	return !(atomic_read((atomic_t *)&tboot->num_in_wfs) == num_aps);
+}
+
+static int __cpuinit tboot_cpu_callback(struct notifier_block *nfb,
+			unsigned long action, void *hcpu)
+{
+	switch (action) {
+	case CPU_DYING:
+		atomic_inc(&ap_wfs_count);
+		if (num_online_cpus() == 1)
+			if (tboot_wait_for_aps(atomic_read(&ap_wfs_count)))
+				return NOTIFY_BAD;
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block tboot_cpu_notifier __cpuinitdata =
+{
+	.notifier_call = tboot_cpu_callback,
+};
+
+static __init int tboot_late_init(void)
+{
+	if (!tboot_enabled())
+		return 0;
+
+	tboot_create_trampoline();
+
+	atomic_set(&ap_wfs_count, 0);
+	register_hotcpu_notifier(&tboot_cpu_notifier);
+	return 0;
+}
+
+late_initcall(tboot_late_init);
+
+/*
+ * TXT configuration registers (offsets from TXT_{PUB, PRIV}_CONFIG_REGS_BASE)
+ */
+
+#define TXT_PUB_CONFIG_REGS_BASE       0xfed30000
+#define TXT_PRIV_CONFIG_REGS_BASE      0xfed20000
+
+/* # pages for each config regs space - used by fixmap */
+#define NR_TXT_CONFIG_PAGES     ((TXT_PUB_CONFIG_REGS_BASE -                \
+				  TXT_PRIV_CONFIG_REGS_BASE) >> PAGE_SHIFT)
+
+/* offsets from pub/priv config space */
+#define TXTCR_HEAP_BASE             0x0300
+#define TXTCR_HEAP_SIZE             0x0308
+
+#define SHA1_SIZE      20
+
+struct sha1_hash {
+	u8 hash[SHA1_SIZE];
+};
+
+struct sinit_mle_data {
+	u32               version;             /* currently 6 */
+	struct sha1_hash  bios_acm_id;
+	u32               edx_senter_flags;
+	u64               mseg_valid;
+	struct sha1_hash  sinit_hash;
+	struct sha1_hash  mle_hash;
+	struct sha1_hash  stm_hash;
+	struct sha1_hash  lcp_policy_hash;
+	u32               lcp_policy_control;
+	u32               rlp_wakeup_addr;
+	u32               reserved;
+	u32               num_mdrs;
+	u32               mdrs_off;
+	u32               num_vtd_dmars;
+	u32               vtd_dmars_off;
+} __packed;
+
+struct acpi_table_header *tboot_get_dmar_table(struct acpi_table_header *dmar_tbl)
+{
+	void *heap_base, *heap_ptr, *config;
+
+	if (!tboot_enabled())
+		return dmar_tbl;
+
+	/*
+	 * ACPI tables may not be DMA protected by tboot, so use DMAR copy
+	 * SINIT saved in SinitMleData in TXT heap (which is DMA protected)
+	 */
+
+	/* map config space in order to get heap addr */
+	config = ioremap(TXT_PUB_CONFIG_REGS_BASE, NR_TXT_CONFIG_PAGES *
+			 PAGE_SIZE);
+	if (!config)
+		return NULL;
+
+	/* now map TXT heap */
+	heap_base = ioremap(*(u64 *)(config + TXTCR_HEAP_BASE),
+			    *(u64 *)(config + TXTCR_HEAP_SIZE));
+	iounmap(config);
+	if (!heap_base)
+		return NULL;
+
+	/* walk heap to SinitMleData */
+	/* skip BiosData */
+	heap_ptr = heap_base + *(u64 *)heap_base;
+	/* skip OsMleData */
+	heap_ptr += *(u64 *)heap_ptr;
+	/* skip OsSinitData */
+	heap_ptr += *(u64 *)heap_ptr;
+	/* now points to SinitMleDataSize; set to SinitMleData */
+	heap_ptr += sizeof(u64);
+	/* get addr of DMAR table */
+	dmar_tbl = (struct acpi_table_header *)(heap_ptr +
+		   ((struct sinit_mle_data *)heap_ptr)->vtd_dmars_off -
+		   sizeof(u64));
+
+	/* don't unmap heap because dmar.c needs access to this */
+
+	return dmar_tbl;
+}
+
+int tboot_force_iommu(void)
+{
+	if (!tboot_enabled())
+		return 0;
+
+	if (no_iommu || swiotlb || dmar_disabled)
+		pr_warning("Forcing Intel-IOMMU to enabled\n");
+
+	dmar_disabled = 0;
+#ifdef CONFIG_SWIOTLB
+	swiotlb = 0;
+#endif
+	no_iommu = 0;
+
+	return 1;
+}
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
new file mode 100644
index 00000000000..dcb00d27851
--- /dev/null
+++ b/arch/x86/kernel/time.c
@@ -0,0 +1,120 @@
+/*
+ *  Copyright (c) 1991,1992,1995  Linus Torvalds
+ *  Copyright (c) 1994  Alan Modra
+ *  Copyright (c) 1995  Markus Kuhn
+ *  Copyright (c) 1996  Ingo Molnar
+ *  Copyright (c) 1998  Andrea Arcangeli
+ *  Copyright (c) 2002,2006  Vojtech Pavlik
+ *  Copyright (c) 2003  Andi Kleen
+ *
+ */
+
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/mca.h>
+
+#include <asm/vsyscall.h>
+#include <asm/x86_init.h>
+#include <asm/i8259.h>
+#include <asm/i8253.h>
+#include <asm/timer.h>
+#include <asm/hpet.h>
+#include <asm/time.h>
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_IO_APIC)
+int timer_ack;
+#endif
+
+#ifdef CONFIG_X86_64
+volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
+#endif
+
+unsigned long profile_pc(struct pt_regs *regs)
+{
+	unsigned long pc = instruction_pointer(regs);
+
+	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
+#ifdef CONFIG_FRAME_POINTER
+		return *(unsigned long *)(regs->bp + sizeof(long));
+#else
+		unsigned long *sp = (unsigned long *)regs->sp;
+		/*
+		 * Return address is either directly at stack pointer
+		 * or above a saved flags. Eflags has bits 22-31 zero,
+		 * kernel addresses don't.
+		 */
+		if (sp[0] >> 22)
+			return sp[0];
+		if (sp[1] >> 22)
+			return sp[1];
+#endif
+	}
+	return pc;
+}
+EXPORT_SYMBOL(profile_pc);
+
+/*
+ * Default timer interrupt handler for PIT/HPET
+ */
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
+{
+	/* Keep nmi watchdog up to date */
+	inc_irq_stat(irq0_irqs);
+
+	/* Optimized out for !IO_APIC and x86_64 */
+	if (timer_ack) {
+		/*
+		 * Subtle, when I/O APICs are used we have to ack timer IRQ
+		 * manually to deassert NMI lines for the watchdog if run
+		 * on an 82489DX-based system.
+		 */
+		spin_lock(&i8259A_lock);
+		outb(0x0c, PIC_MASTER_OCW3);
+		/* Ack the IRQ; AEOI will end it automatically. */
+		inb(PIC_MASTER_POLL);
+		spin_unlock(&i8259A_lock);
+	}
+
+	global_clock_event->event_handler(global_clock_event);
+
+	/* MCA bus quirk: Acknowledge irq0 by setting bit 7 in port 0x61 */
+	if (MCA_bus)
+		outb_p(inb_p(0x61)| 0x80, 0x61);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction irq0  = {
+	.handler = timer_interrupt,
+	.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
+	.name = "timer"
+};
+
+void __init setup_default_timer_irq(void)
+{
+	setup_irq(0, &irq0);
+}
+
+/* Default timer init function */
+void __init hpet_time_init(void)
+{
+	if (!hpet_enable())
+		setup_pit_timer();
+	setup_default_timer_irq();
+}
+
+static __init void x86_late_time_init(void)
+{
+	x86_init.timers.timer_init();
+	tsc_init();
+}
+
+/*
+ * Initialize TSC and delay the periodic timer init to
+ * late x86_late_time_init() so ioremap works.
+ */
+void __init time_init(void)
+{
+	late_time_init = x86_late_time_init;
+}
diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c
deleted file mode 100644
index 5c5d87f0b2e..00000000000
--- a/arch/x86/kernel/time_32.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
- *
- * This file contains the PC-specific time handling details:
- * reading the RTC at bootup, etc..
- * 1994-07-02    Alan Modra
- *	fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- * 1995-03-26    Markus Kuhn
- *      fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
- *      precision CMOS clock update
- * 1996-05-03    Ingo Molnar
- *      fixed time warps in do_[slow|fast]_gettimeoffset()
- * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
- *		"A Kernel Model for Precision Timekeeping" by Dave Mills
- * 1998-09-05    (Various)
- *	More robust do_fast_gettimeoffset() algorithm implemented
- *	(works with APM, Cyrix 6x86MX and Centaur C6),
- *	monotonic gettimeofday() with fast_get_timeoffset(),
- *	drift-proof precision TSC calibration on boot
- *	(C. Scott Ananian <cananian@alumni.princeton.edu>, Andrew D.
- *	Balsa <andrebalsa@altern.org>, Philip Gladstone <philip@raptor.com>;
- *	ported from 2.0.35 Jumbo-9 by Michael Krause <m.krause@tu-harburg.de>).
- * 1998-12-16    Andrea Arcangeli
- *	Fixed Jumbo-9 code in 2.1.131: do_gettimeofday was missing 1 jiffy
- *	because was not accounting lost_ticks.
- * 1998-12-24 Copyright (C) 1998  Andrea Arcangeli
- *	Fixed a xtime SMP race (we need the xtime_lock rw spinlock to
- *	serialize accesses to xtime/lost_ticks).
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/mca.h>
-
-#include <asm/setup.h>
-#include <asm/hpet.h>
-#include <asm/time.h>
-#include <asm/timer.h>
-
-#include <asm/do_timer.h>
-
-int timer_ack;
-
-unsigned long profile_pc(struct pt_regs *regs)
-{
-	unsigned long pc = instruction_pointer(regs);
-
-#ifdef CONFIG_SMP
-	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
-#ifdef CONFIG_FRAME_POINTER
-		return *(unsigned long *)(regs->bp + sizeof(long));
-#else
-		unsigned long *sp = (unsigned long *)&regs->sp;
-
-		/* Return address is either directly at stack pointer
-		   or above a saved flags. Eflags has bits 22-31 zero,
-		   kernel addresses don't. */
-		if (sp[0] >> 22)
-			return sp[0];
-		if (sp[1] >> 22)
-			return sp[1];
-#endif
-	}
-#endif
-	return pc;
-}
-EXPORT_SYMBOL(profile_pc);
-
-/*
- * This is the same as the above, except we _also_ save the current
- * Time Stamp Counter value at the time of the timer interrupt, so that
- * we later on can estimate the time of day more exactly.
- */
-irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
-	/* Keep nmi watchdog up to date */
-	inc_irq_stat(irq0_irqs);
-
-#ifdef CONFIG_X86_IO_APIC
-	if (timer_ack) {
-		/*
-		 * Subtle, when I/O APICs are used we have to ack timer IRQ
-		 * manually to deassert NMI lines for the watchdog if run
-		 * on an 82489DX-based system.
-		 */
-		spin_lock(&i8259A_lock);
-		outb(0x0c, PIC_MASTER_OCW3);
-		/* Ack the IRQ; AEOI will end it automatically. */
-		inb(PIC_MASTER_POLL);
-		spin_unlock(&i8259A_lock);
-	}
-#endif
-
-	do_timer_interrupt_hook();
-
-#ifdef CONFIG_MCA
-	if (MCA_bus) {
-		/* The PS/2 uses level-triggered interrupts.  You can't
-		turn them off, nor would you want to (any attempt to
-		enable edge-triggered interrupts usually gets intercepted by a
-		special hardware circuit).  Hence we have to acknowledge
-		the timer interrupt.  Through some incredibly stupid
-		design idea, the reset for IRQ 0 is done by setting the
-		high bit of the PPI port B (0x61).  Note that some PS/2s,
-		notably the 55SX, work fine if this is removed.  */
-
-		u8 irq_v = inb_p(0x61);		/* read the current state */
-		outb_p(irq_v | 0x80, 0x61);	/* reset the IRQ */
-	}
-#endif
-
-	return IRQ_HANDLED;
-}
-
-/* Duplicate of time_init() below, with hpet_enable part added */
-void __init hpet_time_init(void)
-{
-	if (!hpet_enable())
-		setup_pit_timer();
-	x86_quirk_time_init();
-}
-
-/*
- * This is called directly from init code; we must delay timer setup in the
- * HPET case as we can't make the decision to turn on HPET this early in the
- * boot process.
- *
- * The chosen time_init function will usually be hpet_time_init, above, but
- * in the case of virtual hardware, an alternative function may be substituted.
- */
-void __init time_init(void)
-{
-	x86_quirk_pre_time_init();
-	tsc_init();
-	late_time_init = choose_time_init();
-}
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c
deleted file mode 100644
index 5ba343e6184..00000000000
--- a/arch/x86/kernel/time_64.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- *  "High Precision Event Timer" based timekeeping.
- *
- *  Copyright (c) 1991,1992,1995  Linus Torvalds
- *  Copyright (c) 1994  Alan Modra
- *  Copyright (c) 1995  Markus Kuhn
- *  Copyright (c) 1996  Ingo Molnar
- *  Copyright (c) 1998  Andrea Arcangeli
- *  Copyright (c) 2002,2006  Vojtech Pavlik
- *  Copyright (c) 2003  Andi Kleen
- *  RTC support code taken from arch/i386/kernel/timers/time_hpet.c
- */
-
-#include <linux/clockchips.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/time.h>
-#include <linux/mca.h>
-#include <linux/nmi.h>
-
-#include <asm/i8253.h>
-#include <asm/hpet.h>
-#include <asm/vgtod.h>
-#include <asm/time.h>
-#include <asm/timer.h>
-
-volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
-
-unsigned long profile_pc(struct pt_regs *regs)
-{
-	unsigned long pc = instruction_pointer(regs);
-
-	/* Assume the lock function has either no stack frame or a copy
-	   of flags from PUSHF
-	   Eflags always has bits 22 and up cleared unlike kernel addresses. */
-	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
-#ifdef CONFIG_FRAME_POINTER
-		return *(unsigned long *)(regs->bp + sizeof(long));
-#else
-		unsigned long *sp = (unsigned long *)regs->sp;
-		if (sp[0] >> 22)
-			return sp[0];
-		if (sp[1] >> 22)
-			return sp[1];
-#endif
-	}
-	return pc;
-}
-EXPORT_SYMBOL(profile_pc);
-
-static irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
-	inc_irq_stat(irq0_irqs);
-
-	global_clock_event->event_handler(global_clock_event);
-
-#ifdef CONFIG_MCA
-	if (MCA_bus) {
-		u8 irq_v = inb_p(0x61);       /* read the current state */
-		outb_p(irq_v|0x80, 0x61);     /* reset the IRQ */
-	}
-#endif
-
-	return IRQ_HANDLED;
-}
-
-/* calibrate_cpu is used on systems with fixed rate TSCs to determine
- * processor frequency */
-#define TICK_COUNT 100000000
-unsigned long __init calibrate_cpu(void)
-{
-	int tsc_start, tsc_now;
-	int i, no_ctr_free;
-	unsigned long evntsel3 = 0, pmc3 = 0, pmc_now = 0;
-	unsigned long flags;
-
-	for (i = 0; i < 4; i++)
-		if (avail_to_resrv_perfctr_nmi_bit(i))
-			break;
-	no_ctr_free = (i == 4);
-	if (no_ctr_free) {
-		WARN(1, KERN_WARNING "Warning: AMD perfctrs busy ... "
-		     "cpu_khz value may be incorrect.\n");
-		i = 3;
-		rdmsrl(MSR_K7_EVNTSEL3, evntsel3);
-		wrmsrl(MSR_K7_EVNTSEL3, 0);
-		rdmsrl(MSR_K7_PERFCTR3, pmc3);
-	} else {
-		reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i);
-		reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
-	}
-	local_irq_save(flags);
-	/* start measuring cycles, incrementing from 0 */
-	wrmsrl(MSR_K7_PERFCTR0 + i, 0);
-	wrmsrl(MSR_K7_EVNTSEL0 + i, 1 << 22 | 3 << 16 | 0x76);
-	rdtscl(tsc_start);
-	do {
-		rdmsrl(MSR_K7_PERFCTR0 + i, pmc_now);
-		tsc_now = get_cycles();
-	} while ((tsc_now - tsc_start) < TICK_COUNT);
-
-	local_irq_restore(flags);
-	if (no_ctr_free) {
-		wrmsrl(MSR_K7_EVNTSEL3, 0);
-		wrmsrl(MSR_K7_PERFCTR3, pmc3);
-		wrmsrl(MSR_K7_EVNTSEL3, evntsel3);
-	} else {
-		release_perfctr_nmi(MSR_K7_PERFCTR0 + i);
-		release_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
-	}
-
-	return pmc_now * tsc_khz / (tsc_now - tsc_start);
-}
-
-static struct irqaction irq0 = {
-	.handler	= timer_interrupt,
-	.flags		= IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING | IRQF_TIMER,
-	.name		= "timer"
-};
-
-void __init hpet_time_init(void)
-{
-	if (!hpet_enable())
-		setup_pit_timer();
-
-	setup_irq(0, &irq0);
-}
-
-void __init time_init(void)
-{
-	tsc_init();
-
-	late_time_init = choose_time_init();
-}
diff --git a/arch/x86/kernel/tlb_uv.c b/arch/x86/kernel/tlb_uv.c
index 77b9689f8ed..503c1f2e883 100644
--- a/arch/x86/kernel/tlb_uv.c
+++ b/arch/x86/kernel/tlb_uv.c
@@ -640,13 +640,13 @@ static int __init uv_ptc_init(void)
 	if (!is_uv_system())
 		return 0;
 
-	proc_uv_ptc = create_proc_entry(UV_PTC_BASENAME, 0444, NULL);
+	proc_uv_ptc = proc_create(UV_PTC_BASENAME, 0444, NULL,
+				  &proc_uv_ptc_operations);
 	if (!proc_uv_ptc) {
 		printk(KERN_ERR "unable to create %s proc entry\n",
 		       UV_PTC_BASENAME);
 		return -EINVAL;
 	}
-	proc_uv_ptc->proc_fops = &proc_uv_ptc_operations;
 	return 0;
 }
 
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c
index 808031a5ba1..699f7eeb896 100644
--- a/arch/x86/kernel/trampoline.c
+++ b/arch/x86/kernel/trampoline.c
@@ -4,7 +4,7 @@
 #include <asm/e820.h>
 
 /* ready for x86_64 and x86 */
-unsigned char *trampoline_base = __va(TRAMPOLINE_BASE);
+unsigned char *__cpuinitdata trampoline_base = __va(TRAMPOLINE_BASE);
 
 void __init reserve_trampoline_memory(void)
 {
@@ -26,7 +26,7 @@ void __init reserve_trampoline_memory(void)
  * bootstrap into the page concerned. The caller
  * has made sure it's suitably aligned.
  */
-unsigned long setup_trampoline(void)
+unsigned long __cpuinit setup_trampoline(void)
 {
 	memcpy(trampoline_base, trampoline_data, TRAMPOLINE_SIZE);
 	return virt_to_phys(trampoline_base);
diff --git a/arch/x86/kernel/trampoline_32.S b/arch/x86/kernel/trampoline_32.S
index 66d874e5404..8508237e8e4 100644
--- a/arch/x86/kernel/trampoline_32.S
+++ b/arch/x86/kernel/trampoline_32.S
@@ -28,16 +28,12 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 #include <asm/segment.h>
 #include <asm/page_types.h>
 
 /* We can free up trampoline after bootup if cpu hotplug is not supported. */
-#ifndef CONFIG_HOTPLUG_CPU
-.section ".cpuinit.data","aw",@progbits
-#else
-.section .rodata,"a",@progbits
-#endif
-
+__CPUINITRODATA
 .code16
 
 ENTRY(trampoline_data)
diff --git a/arch/x86/kernel/trampoline_64.S b/arch/x86/kernel/trampoline_64.S
index cddfb8d386b..596d54c660a 100644
--- a/arch/x86/kernel/trampoline_64.S
+++ b/arch/x86/kernel/trampoline_64.S
@@ -25,14 +25,15 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 #include <asm/pgtable_types.h>
 #include <asm/page_types.h>
 #include <asm/msr.h>
 #include <asm/segment.h>
 #include <asm/processor-flags.h>
 
-.section .rodata, "a", @progbits
-
+/* We can free up the trampoline after bootup if cpu hotplug is not supported. */
+__CPUINITRODATA
 .code16
 
 ENTRY(trampoline_data)
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 5204332f475..7e37dcee0cc 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -14,7 +14,6 @@
 #include <linux/spinlock.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
-#include <linux/utsname.h>
 #include <linux/kdebug.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -59,12 +58,12 @@
 #include <asm/mach_traps.h>
 
 #ifdef CONFIG_X86_64
+#include <asm/x86_init.h>
 #include <asm/pgalloc.h>
 #include <asm/proto.h>
 #else
 #include <asm/processor-flags.h>
 #include <asm/setup.h>
-#include <asm/traps.h>
 
 asmlinkage int system_call(void);
 
@@ -73,11 +72,9 @@ char ignore_fpu_irq;
 
 /*
  * The IDT has to be page-aligned to simplify the Pentium
- * F0 0F bug workaround.. We have a special link segment
- * for this.
+ * F0 0F bug workaround.
  */
-gate_desc idt_table[256]
-	__attribute__((__section__(".data.idt"))) = { { { { 0, 0 } } }, };
+gate_desc idt_table[NR_VECTORS] __page_aligned_data = { { { { 0, 0 } } }, };
 #endif
 
 DECLARE_BITMAP(used_vectors, NR_VECTORS);
@@ -786,33 +783,34 @@ do_spurious_interrupt_bug(struct pt_regs *regs, long error_code)
 #endif
 }
 
-#ifdef CONFIG_X86_32
-unsigned long patch_espfix_desc(unsigned long uesp, unsigned long kesp)
+asmlinkage void __attribute__((weak)) smp_thermal_interrupt(void)
 {
-	struct desc_struct *gdt = get_cpu_gdt_table(smp_processor_id());
-	unsigned long base = (kesp - uesp) & -THREAD_SIZE;
-	unsigned long new_kesp = kesp - base;
-	unsigned long lim_pages = (new_kesp | (THREAD_SIZE - 1)) >> PAGE_SHIFT;
-	__u64 desc = *(__u64 *)&gdt[GDT_ENTRY_ESPFIX_SS];
-
-	/* Set up base for espfix segment */
-	desc &= 0x00f0ff0000000000ULL;
-	desc |=	((((__u64)base) << 16) & 0x000000ffffff0000ULL) |
-		((((__u64)base) << 32) & 0xff00000000000000ULL) |
-		((((__u64)lim_pages) << 32) & 0x000f000000000000ULL) |
-		(lim_pages & 0xffff);
-	*(__u64 *)&gdt[GDT_ENTRY_ESPFIX_SS] = desc;
-
-	return new_kesp;
 }
-#endif
 
-asmlinkage void __attribute__((weak)) smp_thermal_interrupt(void)
+asmlinkage void __attribute__((weak)) smp_threshold_interrupt(void)
 {
 }
 
-asmlinkage void __attribute__((weak)) smp_threshold_interrupt(void)
+/*
+ * __math_state_restore assumes that cr0.TS is already clear and the
+ * fpu state is all ready for use.  Used during context switch.
+ */
+void __math_state_restore(void)
 {
+	struct thread_info *thread = current_thread_info();
+	struct task_struct *tsk = thread->task;
+
+	/*
+	 * Paranoid restore. send a SIGSEGV if we fail to restore the state.
+	 */
+	if (unlikely(restore_fpu_checking(tsk))) {
+		stts();
+		force_sig(SIGSEGV, tsk);
+		return;
+	}
+
+	thread->status |= TS_USEDFPU;	/* So we fnsave on switch_to() */
+	tsk->fpu_counter++;
 }
 
 /*
@@ -846,17 +844,8 @@ asmlinkage void math_state_restore(void)
 	}
 
 	clts();				/* Allow maths ops (or we recurse) */
-	/*
-	 * Paranoid restore. send a SIGSEGV if we fail to restore the state.
-	 */
-	if (unlikely(restore_fpu_checking(tsk))) {
-		stts();
-		force_sig(SIGSEGV, tsk);
-		return;
-	}
 
-	thread->status |= TS_USEDFPU;	/* So we fnsave on switch_to() */
-	tsk->fpu_counter++;
+	__math_state_restore();
 }
 EXPORT_SYMBOL_GPL(math_state_restore);
 
@@ -980,7 +969,5 @@ void __init trap_init(void)
 	 */
 	cpu_init();
 
-#ifdef CONFIG_X86_32
-	x86_quirk_trap_init();
-#endif
+	x86_init.irqs.trap_init();
 }
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 71f4368b357..cd982f48e23 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -17,6 +17,8 @@
 #include <asm/time.h>
 #include <asm/delay.h>
 #include <asm/hypervisor.h>
+#include <asm/nmi.h>
+#include <asm/x86_init.h>
 
 unsigned int __read_mostly cpu_khz;	/* TSC clocks / usec, not used here */
 EXPORT_SYMBOL(cpu_khz);
@@ -400,15 +402,9 @@ unsigned long native_calibrate_tsc(void)
 {
 	u64 tsc1, tsc2, delta, ref1, ref2;
 	unsigned long tsc_pit_min = ULONG_MAX, tsc_ref_min = ULONG_MAX;
-	unsigned long flags, latch, ms, fast_calibrate, hv_tsc_khz;
+	unsigned long flags, latch, ms, fast_calibrate;
 	int hpet = is_hpet_enabled(), i, loopmin;
 
-	hv_tsc_khz = get_hypervisor_tsc_freq();
-	if (hv_tsc_khz) {
-		printk(KERN_INFO "TSC: Frequency read from the hypervisor\n");
-		return hv_tsc_khz;
-	}
-
 	local_irq_save(flags);
 	fast_calibrate = quick_pit_calibrate();
 	local_irq_restore(flags);
@@ -566,7 +562,7 @@ int recalibrate_cpu_khz(void)
 	unsigned long cpu_khz_old = cpu_khz;
 
 	if (cpu_has_tsc) {
-		tsc_khz = calibrate_tsc();
+		tsc_khz = x86_platform.calibrate_tsc();
 		cpu_khz = tsc_khz;
 		cpu_data(0).loops_per_jiffy =
 			cpufreq_scale(cpu_data(0).loops_per_jiffy,
@@ -670,7 +666,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
 	if ((val == CPUFREQ_PRECHANGE  && freq->old < freq->new) ||
 			(val == CPUFREQ_POSTCHANGE && freq->old > freq->new) ||
 			(val == CPUFREQ_RESUMECHANGE)) {
-		*lpj = 	cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new);
+		*lpj = cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new);
 
 		tsc_khz = cpufreq_scale(tsc_khz_ref, ref_freq, freq->new);
 		if (!(freq->flags & CPUFREQ_CONST_LOOPS))
@@ -744,10 +740,16 @@ static cycle_t __vsyscall_fn vread_tsc(void)
 }
 #endif
 
+static void resume_tsc(void)
+{
+	clocksource_tsc.cycle_last = 0;
+}
+
 static struct clocksource clocksource_tsc = {
 	.name                   = "tsc",
 	.rating                 = 300,
 	.read                   = read_tsc,
+	.resume			= resume_tsc,
 	.mask                   = CLOCKSOURCE_MASK(64),
 	.shift                  = 22,
 	.flags                  = CLOCK_SOURCE_IS_CONTINUOUS |
@@ -761,12 +763,14 @@ void mark_tsc_unstable(char *reason)
 {
 	if (!tsc_unstable) {
 		tsc_unstable = 1;
-		printk("Marking TSC unstable due to %s\n", reason);
+		printk(KERN_INFO "Marking TSC unstable due to %s\n", reason);
 		/* Change only the rating, when not registered */
 		if (clocksource_tsc.mult)
-			clocksource_change_rating(&clocksource_tsc, 0);
-		else
+			clocksource_mark_unstable(&clocksource_tsc);
+		else {
+			clocksource_tsc.flags |= CLOCK_SOURCE_UNSTABLE;
 			clocksource_tsc.rating = 0;
+		}
 	}
 }
 
@@ -852,15 +856,71 @@ static void __init init_tsc_clocksource(void)
 	clocksource_register(&clocksource_tsc);
 }
 
+#ifdef CONFIG_X86_64
+/*
+ * calibrate_cpu is used on systems with fixed rate TSCs to determine
+ * processor frequency
+ */
+#define TICK_COUNT 100000000
+static unsigned long __init calibrate_cpu(void)
+{
+	int tsc_start, tsc_now;
+	int i, no_ctr_free;
+	unsigned long evntsel3 = 0, pmc3 = 0, pmc_now = 0;
+	unsigned long flags;
+
+	for (i = 0; i < 4; i++)
+		if (avail_to_resrv_perfctr_nmi_bit(i))
+			break;
+	no_ctr_free = (i == 4);
+	if (no_ctr_free) {
+		WARN(1, KERN_WARNING "Warning: AMD perfctrs busy ... "
+		     "cpu_khz value may be incorrect.\n");
+		i = 3;
+		rdmsrl(MSR_K7_EVNTSEL3, evntsel3);
+		wrmsrl(MSR_K7_EVNTSEL3, 0);
+		rdmsrl(MSR_K7_PERFCTR3, pmc3);
+	} else {
+		reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i);
+		reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
+	}
+	local_irq_save(flags);
+	/* start measuring cycles, incrementing from 0 */
+	wrmsrl(MSR_K7_PERFCTR0 + i, 0);
+	wrmsrl(MSR_K7_EVNTSEL0 + i, 1 << 22 | 3 << 16 | 0x76);
+	rdtscl(tsc_start);
+	do {
+		rdmsrl(MSR_K7_PERFCTR0 + i, pmc_now);
+		tsc_now = get_cycles();
+	} while ((tsc_now - tsc_start) < TICK_COUNT);
+
+	local_irq_restore(flags);
+	if (no_ctr_free) {
+		wrmsrl(MSR_K7_EVNTSEL3, 0);
+		wrmsrl(MSR_K7_PERFCTR3, pmc3);
+		wrmsrl(MSR_K7_EVNTSEL3, evntsel3);
+	} else {
+		release_perfctr_nmi(MSR_K7_PERFCTR0 + i);
+		release_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
+	}
+
+	return pmc_now * tsc_khz / (tsc_now - tsc_start);
+}
+#else
+static inline unsigned long calibrate_cpu(void) { return cpu_khz; }
+#endif
+
 void __init tsc_init(void)
 {
 	u64 lpj;
 	int cpu;
 
+	x86_init.timers.tsc_pre_init();
+
 	if (!cpu_has_tsc)
 		return;
 
-	tsc_khz = calibrate_tsc();
+	tsc_khz = x86_platform.calibrate_tsc();
 	cpu_khz = tsc_khz;
 
 	if (!tsc_khz) {
@@ -868,11 +928,9 @@ void __init tsc_init(void)
 		return;
 	}
 
-#ifdef CONFIG_X86_64
 	if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) &&
 			(boot_cpu_data.x86_vendor == X86_VENDOR_AMD))
 		cpu_khz = calibrate_cpu();
-#endif
 
 	printk("Detected %lu.%03lu MHz processor.\n",
 			(unsigned long)cpu_khz / 1000,
diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c
index 027b5b49899..f37930954d1 100644
--- a/arch/x86/kernel/tsc_sync.c
+++ b/arch/x86/kernel/tsc_sync.c
@@ -114,7 +114,7 @@ void __cpuinit check_tsc_sync_source(int cpu)
 		return;
 
 	if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) {
-		pr_info("Skipping synchronization checks as TSC is reliable.\n");
+		printk_once(KERN_INFO "Skipping synchronization checks as TSC is reliable.\n");
 		return;
 	}
 
diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c
index 31ffc24eec4..f068553a1b1 100644
--- a/arch/x86/kernel/visws_quirks.c
+++ b/arch/x86/kernel/visws_quirks.c
@@ -30,6 +30,7 @@
 #include <asm/setup.h>
 #include <asm/apic.h>
 #include <asm/e820.h>
+#include <asm/time.h>
 #include <asm/io.h>
 
 #include <linux/kernel_stat.h>
@@ -53,7 +54,7 @@ int is_visws_box(void)
 	return visws_board_type >= 0;
 }
 
-static int __init visws_time_init(void)
+static void __init visws_time_init(void)
 {
 	printk(KERN_INFO "Starting Cobalt Timer system clock\n");
 
@@ -66,21 +67,13 @@ static int __init visws_time_init(void)
 	/* Enable (unmask) the timer interrupt */
 	co_cpu_write(CO_CPU_CTRL, co_cpu_read(CO_CPU_CTRL) & ~CO_CTRL_TIMEMASK);
 
-	/*
-	 * Zero return means the generic timer setup code will set up
-	 * the standard vector:
-	 */
-	return 0;
+	setup_default_timer_irq();
 }
 
-static int __init visws_pre_intr_init(void)
+/* Replaces the default init_ISA_irqs in the generic setup */
+static void __init visws_pre_intr_init(void)
 {
 	init_VISWS_APIC_irqs();
-
-	/*
-	 * We dont want ISA irqs to be set up by the generic code:
-	 */
-	return 1;
 }
 
 /* Quirk for machine specific memory setup. */
@@ -156,12 +149,8 @@ static void visws_machine_power_off(void)
 	outl(PIIX_SPECIAL_STOP, 0xCFC);
 }
 
-static int __init visws_get_smp_config(unsigned int early)
+static void __init visws_get_smp_config(unsigned int early)
 {
-	/*
-	 * Prevent MP-table parsing by the generic code:
-	 */
-	return 1;
 }
 
 /*
@@ -208,7 +197,7 @@ static void __init MP_processor_info(struct mpc_cpu *m)
 	apic_version[m->apicid] = ver;
 }
 
-static int __init visws_find_smp_config(unsigned int reserve)
+static void __init visws_find_smp_config(unsigned int reserve)
 {
 	struct mpc_cpu *mp = phys_to_virt(CO_CPU_TAB_PHYS);
 	unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS));
@@ -230,21 +219,9 @@ static int __init visws_find_smp_config(unsigned int reserve)
 		MP_processor_info(mp++);
 
 	mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
-
-	return 1;
 }
 
-static int visws_trap_init(void);
-
-static struct x86_quirks visws_x86_quirks __initdata = {
-	.arch_time_init		= visws_time_init,
-	.arch_pre_intr_init	= visws_pre_intr_init,
-	.arch_memory_setup	= visws_memory_setup,
-	.arch_intr_init		= NULL,
-	.arch_trap_init		= visws_trap_init,
-	.mach_get_smp_config	= visws_get_smp_config,
-	.mach_find_smp_config	= visws_find_smp_config,
-};
+static void visws_trap_init(void);
 
 void __init visws_early_detect(void)
 {
@@ -257,11 +234,14 @@ void __init visws_early_detect(void)
 		return;
 
 	/*
-	 * Install special quirks for timer, interrupt and memory setup:
-	 * Fall back to generic behavior for traps:
-	 * Override generic MP-table parsing:
+	 * Override the default platform setup functions
 	 */
-	x86_quirks = &visws_x86_quirks;
+	x86_init.resources.memory_setup = visws_memory_setup;
+	x86_init.mpparse.get_smp_config = visws_get_smp_config;
+	x86_init.mpparse.find_smp_config = visws_find_smp_config;
+	x86_init.irqs.pre_vector_init = visws_pre_intr_init;
+	x86_init.irqs.trap_init = visws_trap_init;
+	x86_init.timers.timer_init = visws_time_init;
 
 	/*
 	 * Install reboot quirks:
@@ -400,12 +380,10 @@ static __init void cobalt_init(void)
 		co_apic_read(CO_APIC_ID));
 }
 
-static int __init visws_trap_init(void)
+static void __init visws_trap_init(void)
 {
 	lithium_init();
 	cobalt_init();
-
-	return 1;
 }
 
 /*
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 95a7289e4b0..31e6f6cfe53 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -817,15 +817,15 @@ static inline int __init activate_vmi(void)
 		vmi_timer_ops.set_alarm = vmi_get_function(VMI_CALL_SetAlarm);
 		vmi_timer_ops.cancel_alarm =
 			 vmi_get_function(VMI_CALL_CancelAlarm);
-		pv_time_ops.time_init = vmi_time_init;
-		pv_time_ops.get_wallclock = vmi_get_wallclock;
-		pv_time_ops.set_wallclock = vmi_set_wallclock;
+		x86_init.timers.timer_init = vmi_time_init;
 #ifdef CONFIG_X86_LOCAL_APIC
-		pv_apic_ops.setup_boot_clock = vmi_time_bsp_init;
-		pv_apic_ops.setup_secondary_clock = vmi_time_ap_init;
+		x86_init.timers.setup_percpu_clockev = vmi_time_bsp_init;
+		x86_cpuinit.setup_percpu_clockev = vmi_time_ap_init;
 #endif
 		pv_time_ops.sched_clock = vmi_sched_clock;
-		pv_time_ops.get_tsc_khz = vmi_tsc_khz;
+		x86_platform.calibrate_tsc = vmi_tsc_khz;
+		x86_platform.get_wallclock = vmi_get_wallclock;
+		x86_platform.set_wallclock = vmi_set_wallclock;
 
 		/* We have true wallclock functions; disable CMOS clock sync */
 		no_sync_cmos_clock = 1;
diff --git a/arch/x86/kernel/vmiclock_32.c b/arch/x86/kernel/vmiclock_32.c
index 2b3eb82efee..611b9e2360d 100644
--- a/arch/x86/kernel/vmiclock_32.c
+++ b/arch/x86/kernel/vmiclock_32.c
@@ -68,7 +68,7 @@ unsigned long long vmi_sched_clock(void)
 	return cycles_2_ns(vmi_timer_ops.get_cycle_counter(VMI_CYCLES_AVAILABLE));
 }
 
-/* paravirt_ops.get_tsc_khz = vmi_tsc_khz */
+/* x86_platform.calibrate_tsc = vmi_tsc_khz */
 unsigned long vmi_tsc_khz(void)
 {
 	unsigned long long khz;
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 9fc178255c0..92929fb3f9f 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -45,9 +45,9 @@ PHDRS {
 	text PT_LOAD FLAGS(5);          /* R_E */
 	data PT_LOAD FLAGS(7);          /* RWE */
 #ifdef CONFIG_X86_64
-	user PT_LOAD FLAGS(7);          /* RWE */
+	user PT_LOAD FLAGS(5);          /* R_E */
 #ifdef CONFIG_SMP
-	percpu PT_LOAD FLAGS(7);        /* RWE */
+	percpu PT_LOAD FLAGS(6);        /* RW_ */
 #endif
 	init PT_LOAD FLAGS(7);          /* RWE */
 #endif
@@ -65,17 +65,11 @@ SECTIONS
 #endif
 
 	/* Text and read-only data */
-
-	/* bootstrapping code */
-	.text.head : AT(ADDR(.text.head) - LOAD_OFFSET) {
-		_text = .;
-		*(.text.head)
-	} :text = 0x9090
-
-	/* The rest of the text */
 	.text :  AT(ADDR(.text) - LOAD_OFFSET) {
+		_text = .;
+		/* bootstrapping code */
+		HEAD_TEXT
 #ifdef CONFIG_X86_32
-		/* not really needed, already page aligned */
 		. = ALIGN(PAGE_SIZE);
 		*(.text.page_aligned)
 #endif
@@ -94,13 +88,7 @@ SECTIONS
 
 	NOTES :text :note
 
-	/* Exception table */
-	. = ALIGN(16);
-	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
-		__start___ex_table = .;
-		*(__ex_table)
-		__stop___ex_table = .;
-	} :text = 0x9090
+	EXCEPTION_TABLE(16) :text = 0x9090
 
 	RO_DATA(PAGE_SIZE)
 
@@ -118,7 +106,6 @@ SECTIONS
 #endif
 
 		PAGE_ALIGNED_DATA(PAGE_SIZE)
-		*(.data.idt)
 
 		CACHELINE_ALIGNED_DATA(CONFIG_X86_L1_CACHE_BYTES)
 
@@ -135,24 +122,21 @@ SECTIONS
 #ifdef CONFIG_X86_64
 
 #define VSYSCALL_ADDR (-10*1024*1024)
-#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data) + SIZEOF(.data) + \
-                            PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
-#define VSYSCALL_VIRT_ADDR ((ADDR(.data) + SIZEOF(.data) + \
-                            PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))
 
-#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
+#define VLOAD_OFFSET (VSYSCALL_ADDR - __vsyscall_0 + LOAD_OFFSET)
 #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
 
-#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
+#define VVIRT_OFFSET (VSYSCALL_ADDR - __vsyscall_0)
 #define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
 
+	. = ALIGN(4096);
+	__vsyscall_0 = .;
+
 	. = VSYSCALL_ADDR;
-	.vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) {
+	.vsyscall_0 : AT(VLOAD(.vsyscall_0)) {
 		*(.vsyscall_0)
 	} :user
 
-	__vsyscall_0 = VSYSCALL_VIRT_ADDR;
-
 	. = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
 	.vsyscall_fn : AT(VLOAD(.vsyscall_fn)) {
 		*(.vsyscall_fn)
@@ -192,11 +176,9 @@ SECTIONS
 		*(.vsyscall_3)
 	}
 
-	. = VSYSCALL_VIRT_ADDR + PAGE_SIZE;
+	. = __vsyscall_0 + PAGE_SIZE;
 
 #undef VSYSCALL_ADDR
-#undef VSYSCALL_PHYS_ADDR
-#undef VSYSCALL_VIRT_ADDR
 #undef VLOAD_OFFSET
 #undef VLOAD
 #undef VVIRT_OFFSET
@@ -219,36 +201,12 @@ SECTIONS
 	PERCPU_VADDR(0, :percpu)
 #endif
 
-	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
-		_sinittext = .;
-		INIT_TEXT
-		_einittext = .;
-	}
+	INIT_TEXT_SECTION(PAGE_SIZE)
 #ifdef CONFIG_X86_64
 	:init
 #endif
 
-	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
-		INIT_DATA
-	}
-
-	. = ALIGN(16);
-	.init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
-		__setup_start = .;
-		*(.init.setup)
-		__setup_end = .;
-	}
-	.initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
-		__initcall_start = .;
-		INITCALLS
-		__initcall_end = .;
-	}
-
-	.con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
-		__con_initcall_start = .;
-		*(.con_initcall.init)
-		__con_initcall_end = .;
-	}
+	INIT_DATA_SECTION(16)
 
 	.x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) {
 		__x86_cpu_dev_start = .;
@@ -256,8 +214,6 @@ SECTIONS
 		__x86_cpu_dev_end = .;
 	}
 
-	SECURITY_INIT
-
 	. = ALIGN(8);
 	.parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
 		__parainstructions = .;
@@ -288,15 +244,6 @@ SECTIONS
 		EXIT_DATA
 	}
 
-#ifdef CONFIG_BLK_DEV_INITRD
-	. = ALIGN(PAGE_SIZE);
-	.init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
-		__initramfs_start = .;
-		*(.init.ramfs)
-		__initramfs_end = .;
-	}
-#endif
-
 #if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
 	PERCPU(PAGE_SIZE)
 #endif
@@ -348,15 +295,12 @@ SECTIONS
 		_end = .;
 	}
 
-	/* Sections to be discarded */
-	/DISCARD/ : {
-		*(.exitcall.exit)
-		*(.eh_frame)
-		*(.discard)
-	}
-
         STABS_DEBUG
         DWARF_DEBUG
+
+	/* Sections to be discarded */
+	DISCARDS
+	/DISCARD/ : { *(.eh_frame) }
 }
 
 
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 25ee06a80aa..8cb4974ff59 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -87,6 +87,7 @@ void update_vsyscall(struct timespec *wall_time, struct clocksource *clock)
 	vsyscall_gtod_data.wall_time_sec = wall_time->tv_sec;
 	vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;
 	vsyscall_gtod_data.wall_to_monotonic = wall_to_monotonic;
+	vsyscall_gtod_data.wall_time_coarse = __current_kernel_time();
 	write_sequnlock_irqrestore(&vsyscall_gtod_data.lock, flags);
 }
 
@@ -227,19 +228,11 @@ static long __vsyscall(3) venosys_1(void)
 }
 
 #ifdef CONFIG_SYSCTL
-
-static int
-vsyscall_sysctl_change(ctl_table *ctl, int write, struct file * filp,
-		       void __user *buffer, size_t *lenp, loff_t *ppos)
-{
-	return proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
-}
-
 static ctl_table kernel_table2[] = {
 	{ .procname = "vsyscall64",
 	  .data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int),
 	  .mode = 0644,
-	  .proc_handler = vsyscall_sysctl_change },
+	  .proc_handler = proc_dointvec },
 	{}
 };
 
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
new file mode 100644
index 00000000000..4449a4a2c2e
--- /dev/null
+++ b/arch/x86/kernel/x86_init.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
+ *
+ *  For licencing details see kernel-base/COPYING
+ */
+#include <linux/init.h>
+
+#include <asm/bios_ebda.h>
+#include <asm/paravirt.h>
+#include <asm/mpspec.h>
+#include <asm/setup.h>
+#include <asm/apic.h>
+#include <asm/e820.h>
+#include <asm/time.h>
+#include <asm/irq.h>
+#include <asm/tsc.h>
+
+void __cpuinit x86_init_noop(void) { }
+void __init x86_init_uint_noop(unsigned int unused) { }
+void __init x86_init_pgd_noop(pgd_t *unused) { }
+
+/*
+ * The platform setup functions are preset with the default functions
+ * for standard PC hardware.
+ */
+struct x86_init_ops x86_init __initdata = {
+
+	.resources = {
+		.probe_roms		= x86_init_noop,
+		.reserve_resources	= reserve_standard_io_resources,
+		.memory_setup		= default_machine_specific_memory_setup,
+	},
+
+	.mpparse = {
+		.mpc_record		= x86_init_uint_noop,
+		.setup_ioapic_ids	= x86_init_noop,
+		.mpc_apic_id		= default_mpc_apic_id,
+		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
+		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
+		.find_smp_config	= default_find_smp_config,
+		.get_smp_config		= default_get_smp_config,
+	},
+
+	.irqs = {
+		.pre_vector_init	= init_ISA_irqs,
+		.intr_init		= native_init_IRQ,
+		.trap_init		= x86_init_noop,
+	},
+
+	.oem = {
+		.arch_setup		= x86_init_noop,
+		.banner			= default_banner,
+	},
+
+	.paging = {
+		.pagetable_setup_start	= native_pagetable_setup_start,
+		.pagetable_setup_done	= native_pagetable_setup_done,
+	},
+
+	.timers = {
+		.setup_percpu_clockev	= setup_boot_APIC_clock,
+		.tsc_pre_init		= x86_init_noop,
+		.timer_init		= hpet_time_init,
+	},
+};
+
+struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
+	.setup_percpu_clockev		= setup_secondary_APIC_clock,
+};
+
+struct x86_platform_ops x86_platform = {
+	.calibrate_tsc			= native_calibrate_tsc,
+	.get_wallclock			= mach_get_cmos_time,
+	.set_wallclock			= mach_set_rtc_mmss,
+};