20 files changed, 165 insertions, 128 deletions

diff --git a/arch/avr32/configs/atstk1002_defconfig b/arch/avr32/configs/atstk1002_defconfig
index ae92a14ef9a..77dace9d54b 100644
--- a/arch/avr32/configs/atstk1002_defconfig
+++ b/arch/avr32/configs/atstk1002_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.19-rc2
-# Fri Oct 20 11:52:37 2006
+# Linux kernel version: 2.6.20-rc6
+# Fri Jan 26 13:12:59 2007
 #
 CONFIG_AVR32=y
 CONFIG_GENERIC_HARDIRQS=y
@@ -9,6 +9,8 @@ CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_GENERIC_IRQ_PROBE=y
 CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_GENERIC_TIME=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -36,6 +38,7 @@ CONFIG_TASK_DELAY_ACCT=y
 # CONFIG_UTS_NS is not set
 CONFIG_AUDIT=y
 # CONFIG_IKCONFIG is not set
+CONFIG_SYSFS_DEPRECATED=y
 CONFIG_RELAY=y
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -75,7 +78,9 @@ CONFIG_MODULE_UNLOAD=y
 # Block layer
 #
 CONFIG_BLOCK=y
+# CONFIG_LBD is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
 
 #
 # IO Schedulers
@@ -125,6 +130,7 @@ CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_OWNERSHIP_TRACE is not set
 # CONFIG_HZ_100 is not set
 CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
 # CONFIG_HZ_1000 is not set
 CONFIG_HZ=250
 CONFIG_CMDLINE=""
@@ -182,6 +188,7 @@ CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
 # CONFIG_IPV6 is not set
 # CONFIG_INET6_XFRM_TUNNEL is not set
 # CONFIG_INET6_TUNNEL is not set
@@ -260,6 +267,7 @@ CONFIG_MTD_CMDLINE_PARTS=y
 # User Modules And Translation Layers
 #
 CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=y
 CONFIG_MTD_BLOCK=y
 # CONFIG_FTL is not set
 # CONFIG_NFTL is not set
@@ -355,7 +363,6 @@ CONFIG_BLK_DEV_INITRD=y
 #
 # Misc devices
 #
-# CONFIG_SGI_IOC4 is not set
 # CONFIG_TIFM_CORE is not set
 
 #
@@ -405,11 +412,14 @@ CONFIG_TUN=m
 #
 # PHY device support
 #
+# CONFIG_PHYLIB is not set
 
 #
 # Ethernet (10 or 100Mbit)
 #
-# CONFIG_NET_ETHERNET is not set
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+CONFIG_MACB=y
 
 #
 # Ethernet (1000 Mbit)
@@ -505,10 +515,6 @@ CONFIG_UNIX98_PTYS=y
 # CONFIG_GEN_RTC is not set
 # CONFIG_DTLK is not set
 # CONFIG_R3964 is not set
-
-#
-# Ftape, the floppy tape device driver
-#
 # CONFIG_RAW_DRIVER is not set
 
 #
@@ -621,6 +627,10 @@ CONFIG_UNIX98_PTYS=y
 #
 
 #
+# Virtualization
+#
+
+#
 # File systems
 #
 CONFIG_EXT2_FS=m
@@ -683,7 +693,6 @@ CONFIG_CONFIGFS_FS=m
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
-# CONFIG_JFFS_FS is not set
 CONFIG_JFFS2_FS=y
 CONFIG_JFFS2_FS_DEBUG=0
 CONFIG_JFFS2_FS_WRITEBUFFER=y
@@ -763,6 +772,11 @@ CONFIG_NLS_ISO8859_1=m
 CONFIG_NLS_UTF8=m
 
 #
+# Distributed Lock Manager
+#
+# CONFIG_DLM is not set
+
+#
 # Kernel hacking
 #
 CONFIG_TRACE_IRQFLAGS_SUPPORT=y
@@ -770,6 +784,8 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
 CONFIG_DEBUG_KERNEL=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_DETECT_SOFTLOCKUP=y
@@ -785,13 +801,10 @@ CONFIG_DETECT_SOFTLOCKUP=y
 # CONFIG_DEBUG_KOBJECT is not set
 CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
-CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 CONFIG_FRAME_POINTER=y
-# CONFIG_UNWIND_INFO is not set
 CONFIG_FORCED_INLINING=y
-# CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 # CONFIG_KPROBES is not set
 
@@ -809,6 +822,7 @@ CONFIG_FORCED_INLINING=y
 #
 # Library routines
 #
+CONFIG_BITREVERSE=y
 CONFIG_CRC_CCITT=m
 # CONFIG_CRC16 is not set
 CONFIG_CRC32=y
@@ -817,3 +831,4 @@ CONFIG_AUDIT_GENERIC=y
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_PLIST=y
+CONFIG_IOMAP_COPY=y
diff --git a/arch/avr32/kernel/avr32_ksyms.c b/arch/avr32/kernel/avr32_ksyms.c
index 7c4c76114bb..80f55f8dbf1 100644
--- a/arch/avr32/kernel/avr32_ksyms.c
+++ b/arch/avr32/kernel/avr32_ksyms.c
@@ -29,6 +29,7 @@ EXPORT_SYMBOL(__avr32_asr64);
  */
 EXPORT_SYMBOL(memset);
 EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(clear_page);
 
 /*
  * Userspace access stuff.
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index 06461b8b715..5e47683fc63 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -302,12 +302,16 @@ sysenter_past_esp:
 	pushl $(__USER_CS)
 	CFI_ADJUST_CFA_OFFSET 4
 	/*CFI_REL_OFFSET cs, 0*/
+#ifndef CONFIG_COMPAT_VDSO
 	/*
 	 * Push current_thread_info()->sysenter_return to the stack.
 	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
 	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
 	 */
 	pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
+#else
+	pushl $SYSENTER_RETURN
+#endif
 	CFI_ADJUST_CFA_OFFSET 4
 	CFI_REL_OFFSET eip, 0
 
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index a5e34d65596..1a6f8bb8881 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -310,13 +310,7 @@ static int __init setup_nmi_watchdog(char *str)
 
 	if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE))
 		return 0;
-	/*
-	 * If any other x86 CPU has a local APIC, then
-	 * please test the NMI stuff there and send me the
-	 * missing bits. Right now Intel P6/P4 and AMD K7 only.
-	 */
-	if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0))
-		return 0;  /* no lapic support */
+
 	nmi_watchdog = nmi;
 	return 1;
 }
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c
index 3dceab5828f..e55fd05da0f 100644
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -566,4 +566,11 @@ struct paravirt_ops paravirt_ops = {
 	.irq_enable_sysexit = native_irq_enable_sysexit,
 	.iret = native_iret,
 };
-EXPORT_SYMBOL(paravirt_ops);
+
+/*
+ * NOTE: CONFIG_PARAVIRT is experimental and the paravirt_ops
+ * semantics are subject to change. Hence we only do this
+ * internal-only export of this, until it gets sorted out and
+ * all lowlevel CPU ops used by modules are separately exported.
+ */
+EXPORT_SYMBOL_GPL(paravirt_ops);
diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c
index 7de9117b5a3..5da744204d1 100644
--- a/arch/i386/kernel/sysenter.c
+++ b/arch/i386/kernel/sysenter.c
@@ -79,11 +79,6 @@ int __init sysenter_setup(void)
 #ifdef CONFIG_COMPAT_VDSO
 	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_READONLY);
 	printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO));
-#else
-	/*
-	 * In the non-compat case the ELF coredumping code needs the fixmap:
-	 */
-	__set_fixmap(FIX_VDSO, __pa(syscall_page), PAGE_KERNEL_RO);
 #endif
 
 	if (!boot_cpu_has(X86_FEATURE_SEP)) {
@@ -100,6 +95,7 @@ int __init sysenter_setup(void)
 	return 0;
 }
 
+#ifndef CONFIG_COMPAT_VDSO
 static struct page *syscall_nopage(struct vm_area_struct *vma,
 				unsigned long adr, int *type)
 {
@@ -146,6 +142,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack)
 	vma->vm_end = addr + PAGE_SIZE;
 	/* MAYWRITE to allow gdb to COW and set breakpoints */
 	vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+	/*
+	 * Make sure the vDSO gets into every core dump.
+	 * Dumping its contents makes post-mortem fully interpretable later
+	 * without matching up the same kernel and hardware config to see
+	 * what PC values meant.
+	 */
+	vma->vm_flags |= VM_ALWAYSDUMP;
 	vma->vm_flags |= mm->def_flags;
 	vma->vm_page_prot = protection_map[vma->vm_flags & 7];
 	vma->vm_ops = &syscall_vm_ops;
@@ -187,3 +190,4 @@ int in_gate_area_no_task(unsigned long addr)
 {
 	return 0;
 }
+#endif
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index fd2ff0698a8..bbd386f572d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1568,6 +1568,20 @@ config MIPS_MT_FPAFF
 	depends on MIPS_MT
 	default y
 
+config MIPS_MT_SMTC_INSTANT_REPLAY
+	bool "Low-latency Dispatch of Deferred SMTC IPIs"
+	depends on MIPS_MT_SMTC
+	default y
+	help
+	  SMTC pseudo-interrupts between TCs are deferred and queued
+	  if the target TC is interrupt-inhibited (IXMT). In the first
+	  SMTC prototypes, these queued IPIs were serviced on return
+	  to user mode, or on entry into the kernel idle loop. The
+	  INSTANT_REPLAY option dispatches them as part of local_irq_restore()
+	  processing, which adds runtime overhead (hence the option to turn
+	  it off), but ensures that IPIs are handled promptly even under
+	  heavy I/O interrupt load.
+
 config MIPS_VPE_LOADER_TOM
 	bool "Load VPE program into memory hidden from linux"
 	depends on MIPS_VPE_LOADER
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index d1b026a0337..c68b5d3e5d1 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -623,7 +623,7 @@ LDFLAGS			+= -m $(ld-emul)
 
 ifdef CONFIG_MIPS
 CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \
-	egrep -vw '__GNUC_(MAJOR|MINOR|PATCHLEVEL)__' | \
+	egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
 	sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
 ifdef CONFIG_64BIT
 CHECKFLAGS		+= -m64
diff --git a/arch/mips/dec/prom/memory.c b/arch/mips/dec/prom/memory.c
index 3027ce78279..3aa01d268f2 100644
--- a/arch/mips/dec/prom/memory.c
+++ b/arch/mips/dec/prom/memory.c
@@ -122,7 +122,7 @@ unsigned long __init prom_free_prom_memory(void)
 		addr += PAGE_SIZE;
 	}
 
-	printk("Freeing unused PROM memory: %ldk freed\n",
+	printk("Freeing unused PROM memory: %ldkb freed\n",
 	       (end - PAGE_SIZE) >> 10);
 
 	return end - PAGE_SIZE;
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index a8b387197d5..6a857bf030b 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -4,6 +4,7 @@
 #include <linux/sched.h>
 #include <linux/cpumask.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
 
 #include <asm/cpu.h>
 #include <asm/processor.h>
@@ -270,9 +271,12 @@ void smtc_configure_tlb(void)
 		 * of their initialization in smtc_cpu_setup().
 		 */
 
-		tlbsiz = tlbsiz & 0x3f;	/* MIPS32 limits TLB indices to 64 */
-		cpu_data[0].tlbsize = tlbsiz;
+		/* MIPS32 limits TLB indices to 64 */
+		if (tlbsiz > 64)
+			tlbsiz = 64;
+		cpu_data[0].tlbsize = current_cpu_data.tlbsize = tlbsiz;
 		smtc_status |= SMTC_TLB_SHARED;
+		local_flush_tlb_all();
 
 		printk("TLB of %d entry pairs shared by %d VPEs\n",
 			tlbsiz, vpes);
@@ -1017,6 +1021,35 @@ void setup_cross_vpe_interrupts(void)
  * SMTC-specific hacks invoked from elsewhere in the kernel.
  */
 
+void smtc_ipi_replay(void)
+{
+	/*
+	 * To the extent that we've ever turned interrupts off,
+	 * we may have accumulated deferred IPIs.  This is subtle.
+	 * If we use the smtc_ipi_qdepth() macro, we'll get an
+	 * exact number - but we'll also disable interrupts
+	 * and create a window of failure where a new IPI gets
+	 * queued after we test the depth but before we re-enable
+	 * interrupts. So long as IXMT never gets set, however,
+	 * we should be OK:  If we pick up something and dispatch
+	 * it here, that's great. If we see nothing, but concurrent
+	 * with this operation, another TC sends us an IPI, IXMT
+	 * is clear, and we'll handle it as a real pseudo-interrupt
+	 * and not a pseudo-pseudo interrupt.
+	 */
+	if (IPIQ[smp_processor_id()].depth > 0) {
+		struct smtc_ipi *pipi;
+		extern void self_ipi(struct smtc_ipi *);
+
+		while ((pipi = smtc_ipi_dq(&IPIQ[smp_processor_id()]))) {
+			self_ipi(pipi);
+			smtc_cpu_stats[smp_processor_id()].selfipis++;
+		}
+	}
+}
+
+EXPORT_SYMBOL(smtc_ipi_replay);
+
 void smtc_idle_loop_hook(void)
 {
 #ifdef SMTC_IDLE_HOOK_DEBUG
@@ -1113,29 +1146,14 @@ void smtc_idle_loop_hook(void)
 	if (pdb_msg != &id_ho_db_msg[0])
 		printk("CPU%d: %s", smp_processor_id(), id_ho_db_msg);
 #endif /* SMTC_IDLE_HOOK_DEBUG */
+
 	/*
-	 * To the extent that we've ever turned interrupts off,
-	 * we may have accumulated deferred IPIs.  This is subtle.
-	 * If we use the smtc_ipi_qdepth() macro, we'll get an
-	 * exact number - but we'll also disable interrupts
-	 * and create a window of failure where a new IPI gets
-	 * queued after we test the depth but before we re-enable
-	 * interrupts. So long as IXMT never gets set, however,
-	 * we should be OK:  If we pick up something and dispatch
-	 * it here, that's great. If we see nothing, but concurrent
-	 * with this operation, another TC sends us an IPI, IXMT
-	 * is clear, and we'll handle it as a real pseudo-interrupt
-	 * and not a pseudo-pseudo interrupt.
+	 * Replay any accumulated deferred IPIs. If "Instant Replay"
+	 * is in use, there should never be any.
 	 */
-	if (IPIQ[smp_processor_id()].depth > 0) {
-		struct smtc_ipi *pipi;
-		extern void self_ipi(struct smtc_ipi *);
-
-		if ((pipi = smtc_ipi_dq(&IPIQ[smp_processor_id()])) != NULL) {
-			self_ipi(pipi);
-			smtc_cpu_stats[smp_processor_id()].selfipis++;
-		}
-	}
+#ifndef CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY
+	smtc_ipi_replay();
+#endif /* CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY */
 }
 
 void smtc_soft_dump(void)
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 666bef484dc..458fccf87c5 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -139,13 +139,16 @@ struct tc {
 	struct list_head list;
 };
 
-struct vpecontrol_ {
+struct {
 	/* Virtual processing elements */
 	struct list_head vpe_list;
 
 	/* Thread contexts */
 	struct list_head tc_list;
-} vpecontrol;
+} vpecontrol = {
+	.vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list),
+	.tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
+};
 
 static void release_progmem(void *ptr);
 /* static __attribute_used__ void dump_vpe(struct vpe * v); */
@@ -1388,8 +1391,6 @@ static int __init vpe_module_init(void)
 
 	/* dump_mtregs(); */
 
-	INIT_LIST_HEAD(&vpecontrol.vpe_list);
-	INIT_LIST_HEAD(&vpecontrol.tc_list);
 
 	val = read_c0_mvpconf0();
 	for (i = 0; i < ((val & MVPCONF0_PTC) + 1); i++) {
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 30245c09d02..49065c133eb 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -501,7 +501,8 @@ void free_initmem(void)
 
 	freed = prom_free_prom_memory();
 	if (freed)
-		printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
+		printk(KERN_INFO "Freeing firmware memory: %ldkb freed\n",
+		       freed >> 10);
 
 	free_init_pages("unused kernel memory",
 			__pa_symbol(&__init_begin),
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index 397ba94cd7e..16decf4ac2f 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -1,7 +1,7 @@
 /*
  *  Interrupt handing routines for NEC VR4100 series.
  *
- *  Copyright (C) 2005  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *  Copyright (C) 2005-2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
  *
  *  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
@@ -73,13 +73,19 @@ static void irq_dispatch(unsigned int irq)
 	if (cascade->get_irq != NULL) {
 		unsigned int source_irq = irq;
 		desc = irq_desc + source_irq;
-		desc->chip->ack(source_irq);
+		if (desc->chip->mask_ack)
+			desc->chip->mask_ack(source_irq);
+		else {
+			desc->chip->mask(source_irq);
+			desc->chip->ack(source_irq);
+		}
 		irq = cascade->get_irq(irq);
 		if (irq < 0)
 			atomic_inc(&irq_err_count);
 		else
 			irq_dispatch(irq);
-		desc->chip->end(source_irq);
+		if (!(desc->status & IRQ_DISABLED) && desc->chip->unmask)
+			desc->chip->unmask(source_irq);
 	} else
 		do_IRQ(irq);
 }
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index f4d1f31c14f..d6abe495c6b 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -484,6 +484,7 @@ config PPC_MAPLE
 	select PPC_970_NAP
 	select PPC_NATIVE
 	select PPC_RTAS
+	select ATA_NONSTANDARD if ATA
 	default n
 	help
           This option enables support for the Maple 970FX Evaluation Board.
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index a4b28c73bba..ae0ede19879 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -284,6 +284,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
 	 * pages though
 	 */
 	vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC;
+	/*
+	 * Make sure the vDSO gets into every core dump.
+	 * Dumping its contents makes post-mortem fully interpretable later
+	 * without matching up the same kernel and hardware config to see
+	 * what PC values meant.
+	 */
+	vma->vm_flags |= VM_ALWAYSDUMP;
 	vma->vm_flags |= mm->def_flags;
 	vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
 	vma->vm_ops = &vdso_vmops;
diff --git a/arch/sparc64/kernel/sun4v_tlb_miss.S b/arch/sparc64/kernel/sun4v_tlb_miss.S
index b731881224e..9871dbb1ab4 100644
--- a/arch/sparc64/kernel/sun4v_tlb_miss.S
+++ b/arch/sparc64/kernel/sun4v_tlb_miss.S
@@ -142,9 +142,9 @@ sun4v_dtlb_prot:
 	rdpr	%tl, %g1
 	cmp	%g1, 1
 	bgu,pn	%xcc, winfix_trampoline
-	 nop
-	ba,pt	%xcc, sparc64_realfault_common
 	 mov	FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
+	ba,pt	%xcc, sparc64_realfault_common
+	 nop
 
 	/* Called from trap table:
 	 * %g4:	vaddr
diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index f191a550a07..77558a88a2f 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -19,22 +19,22 @@ config SEMAPHORE_SLEEPERS
 choice
 	prompt "Host memory split"
 	default HOST_VMSPLIT_3G
-	---help---
-	   This is needed when the host kernel on which you run has a non-default
-	   (like 2G/2G) memory split, instead of the customary 3G/1G. If you did
-	   not recompile your own kernel but use the default distro's one, you can
-	   safely accept the "Default split" option.
+	help
+        This is needed when the host kernel on which you run has a non-default
+	(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
+	not recompile your own kernel but use the default distro's one, you can
+	safely accept the "Default split" option.
 
-	   It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
-	   CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
-	   patchset by Con Kolivas, or other ones) - option names match closely the
-	   host CONFIG_VM_SPLIT_* ones.
+	It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
+	CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
+	patchset by Con Kolivas, or other ones) - option names match closely the
+	host CONFIG_VM_SPLIT_* ones.
 
-	   A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
-	   tolerate even more "normal" host kernels, but an higher setting will be
-	   stricter.
+	A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
+	tolerate even more "normal" host kernels, but an higher setting will be
+	stricter.
 
-	   So, if you do not know what to do here, say 'Default split'.
+	So, if you do not know what to do here, say 'Default split'.
 
 	config HOST_VMSPLIT_3G
 		bool "Default split (3G/1G user/kernel host split)"
@@ -67,13 +67,13 @@ config 3_LEVEL_PGTABLES
 
 config STUB_CODE
 	hex
-	default 0xbfffe000 if !HOST_2G_2G
-	default 0x7fffe000 if HOST_2G_2G
+	default 0xbfffe000 if !HOST_VMSPLIT_2G
+	default 0x7fffe000 if HOST_VMSPLIT_2G
 
 config STUB_DATA
 	hex
-	default 0xbffff000 if !HOST_2G_2G
-	default 0x7ffff000 if HOST_2G_2G
+	default 0xbffff000 if !HOST_VMSPLIT_2G
+	default 0x7ffff000 if HOST_VMSPLIT_2G
 
 config STUB_START
 	hex
diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c
index 543ef4f405e..5ce0bd486bb 100644
--- a/arch/x86_64/ia32/ia32_binfmt.c
+++ b/arch/x86_64/ia32/ia32_binfmt.c
@@ -64,55 +64,6 @@ typedef unsigned int elf_greg_t;
 #define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 
-/*
- * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
- * extra segments containing the vsyscall DSO contents.  Dumping its
- * contents makes post-mortem fully interpretable later without matching up
- * the same kernel and hardware config to see what PC values meant.
- * Dumping its extra ELF program headers includes all the other information
- * a debugger needs to easily find how the vsyscall DSO was being used.
- */
-#define ELF_CORE_EXTRA_PHDRS	(find_vma(current->mm, VSYSCALL32_BASE) ?     \
-    (VSYSCALL32_EHDR->e_phnum) : 0)
-#define ELF_CORE_WRITE_EXTRA_PHDRS					      \
-do {									      \
-	if (find_vma(current->mm, VSYSCALL32_BASE)) { 			      \
-		const struct elf32_phdr *const vsyscall_phdrs =		      \
-			(const struct elf32_phdr *) (VSYSCALL32_BASE	      \
-						   + VSYSCALL32_EHDR->e_phoff);\
-		int i;							      \
-		Elf32_Off ofs = 0;					      \
-		for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {	      \
-			struct elf32_phdr phdr = vsyscall_phdrs[i];	      \
-			if (phdr.p_type == PT_LOAD) {			      \
-				BUG_ON(ofs != 0);			      \
-				ofs = phdr.p_offset = offset;		      \
-				phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz);      \
-				phdr.p_filesz = phdr.p_memsz;		      \
-				offset += phdr.p_filesz;		      \
-			}						      \
-			else						      \
-				phdr.p_offset += ofs;			      \
-			phdr.p_paddr = 0; /* match other core phdrs */	      \
-			DUMP_WRITE(&phdr, sizeof(phdr));		      \
-		}							      \
-	}								      \
-} while (0)
-#define ELF_CORE_WRITE_EXTRA_DATA					      \
-do {									      \
-	if (find_vma(current->mm, VSYSCALL32_BASE)) { 			      \
-		const struct elf32_phdr *const vsyscall_phdrs =		      \
-			(const struct elf32_phdr *) (VSYSCALL32_BASE	      \
-						   + VSYSCALL32_EHDR->e_phoff);      \
-		int i;							      \
-		for (i = 0; i < VSYSCALL32_EHDR->e_phnum; ++i) {	      \
-			if (vsyscall_phdrs[i].p_type == PT_LOAD)	      \
-				DUMP_WRITE((void *) (u64) vsyscall_phdrs[i].p_vaddr,\
-				    PAGE_ALIGN(vsyscall_phdrs[i].p_memsz));   \
-		}							      \
-	}								      \
-} while (0)
-
 struct elf_siginfo
 {
 	int	si_signo;			/* signal number */
diff --git a/arch/x86_64/ia32/syscall32.c b/arch/x86_64/ia32/syscall32.c
index 3e5ed20cba4..59f1fa15591 100644
--- a/arch/x86_64/ia32/syscall32.c
+++ b/arch/x86_64/ia32/syscall32.c
@@ -59,6 +59,13 @@ int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
 	vma->vm_end = VSYSCALL32_END;
 	/* MAYWRITE to allow gdb to COW and set breakpoints */
 	vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYEXEC|VM_MAYWRITE;
+	/*
+	 * Make sure the vDSO gets into every core dump.
+	 * Dumping its contents makes post-mortem fully interpretable later
+	 * without matching up the same kernel and hardware config to see
+	 * what PC values meant.
+	 */
+	vma->vm_flags |= VM_ALWAYSDUMP;
 	vma->vm_flags |= mm->def_flags;
 	vma->vm_page_prot = protection_map[vma->vm_flags & 7];
 	vma->vm_ops = &syscall32_vm_ops;
@@ -75,6 +82,14 @@ int syscall32_setup_pages(struct linux_binprm *bprm, int exstack)
 	return 0;
 }
 
+const char *arch_vma_name(struct vm_area_struct *vma)
+{
+	if (vma->vm_start == VSYSCALL32_BASE &&
+	    vma->vm_mm && vma->vm_mm->task_size == IA32_PAGE_OFFSET)
+		return "[vdso]";
+	return NULL;
+}
+
 static int __init init_syscall32(void)
 { 
 	syscall32_page = (void *)get_zeroed_page(GFP_KERNEL); 
diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c
index 186aebbae32..9cb42ecb7f8 100644
--- a/arch/x86_64/kernel/nmi.c
+++ b/arch/x86_64/kernel/nmi.c
@@ -302,8 +302,6 @@ int __init setup_nmi_watchdog(char *str)
 	if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE))
 		return 0;
 
-	if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0))
-		return 0;  /* no lapic support */
 	nmi_watchdog = nmi;
 	return 1;
 }