Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

16 files changed, 190 insertions, 32 deletions

diff --git a/arch/ppc64/kernel/HvLpEvent.c b/arch/ppc64/kernel/HvLpEvent.c
index 9802beefa21..f8f19637f73 100644
--- a/arch/ppc64/kernel/HvLpEvent.c
+++ b/arch/ppc64/kernel/HvLpEvent.c
@@ -45,7 +45,7 @@ int HvLpEvent_unregisterHandler( HvLpEvent_Type eventType )
 			/* We now sleep until all other CPUs have scheduled. This ensures that
 			 * the deletion is seen by all other CPUs, and that the deleted handler
 			 * isn't still running on another CPU when we return. */
-			synchronize_kernel();
+			synchronize_rcu();
 		}
 	}
 	return rc;
diff --git a/arch/ppc64/kernel/nvram.c b/arch/ppc64/kernel/nvram.c
index b9069c2d193..4e71781a441 100644
--- a/arch/ppc64/kernel/nvram.c
+++ b/arch/ppc64/kernel/nvram.c
@@ -339,9 +339,9 @@ static int nvram_remove_os_partition(void)
 static int nvram_create_os_partition(void)
 {
 	struct list_head * p;
-	struct nvram_partition * part;
-	struct nvram_partition * new_part = NULL;
-	struct nvram_partition * free_part = NULL;
+	struct nvram_partition *part = NULL;
+	struct nvram_partition *new_part = NULL;
+	struct nvram_partition *free_part = NULL;
 	int seq_init[2] = { 0, 0 };
 	loff_t tmp_index;
 	long size = 0;
@@ -364,13 +364,11 @@ static int nvram_create_os_partition(void)
 			free_part = part;
 		}
 	}
-	if (!size) {
+	if (!size)
 		return -ENOSPC;
-	}
 	
 	/* Create our OS partition */
-	new_part = (struct nvram_partition *)
-		kmalloc(sizeof(struct nvram_partition), GFP_KERNEL);
+	new_part = kmalloc(sizeof(*new_part), GFP_KERNEL);
 	if (!new_part) {
 		printk(KERN_ERR "nvram_create_os_partition: kmalloc failed\n");
 		return -ENOMEM;
@@ -379,7 +377,7 @@ static int nvram_create_os_partition(void)
 	new_part->index = free_part->index;
 	new_part->header.signature = NVRAM_SIG_OS;
 	new_part->header.length = size;
-	sprintf(new_part->header.name, "ppc64,linux");
+	strcpy(new_part->header.name, "ppc64,linux");
 	new_part->header.checksum = nvram_checksum(&new_part->header);
 
 	rc = nvram_write_header(new_part);
@@ -394,7 +392,8 @@ static int nvram_create_os_partition(void)
 	tmp_index = new_part->index + NVRAM_HEADER_LEN;
 	rc = ppc_md.nvram_write((char *)&seq_init, sizeof(seq_init), &tmp_index);
 	if (rc <= 0) {
-		printk(KERN_ERR "nvram_create_os_partition: nvram_write failed (%d)\n", rc);
+		printk(KERN_ERR "nvram_create_os_partition: nvram_write "
+				"failed (%d)\n", rc);
 		return rc;
 	}
 	
diff --git a/arch/ppc64/kernel/pSeries_hvCall.S b/arch/ppc64/kernel/pSeries_hvCall.S
index 0715d303801..176e8da7646 100644
--- a/arch/ppc64/kernel/pSeries_hvCall.S
+++ b/arch/ppc64/kernel/pSeries_hvCall.S
@@ -28,6 +28,8 @@
 			unsigned long *out3);		R10
  */
 _GLOBAL(plpar_hcall)
+	HMT_MEDIUM
+
 	mfcr	r0
 
 	std	r8,STK_PARM(r8)(r1)	/* Save out ptrs */
@@ -53,6 +55,8 @@ _GLOBAL(plpar_hcall)
 
 /* Simple interface with no output values (other than status) */
 _GLOBAL(plpar_hcall_norets)
+	HMT_MEDIUM
+
 	mfcr	r0
 	stw	r0,8(r1)
 
@@ -75,6 +79,8 @@ _GLOBAL(plpar_hcall_norets)
 			unsigned long *out1);		120(R1)
  */
 _GLOBAL(plpar_hcall_8arg_2ret)
+	HMT_MEDIUM
+
 	mfcr	r0
 	ld	r11,STK_PARM(r11)(r1)	/* put arg8 in R11 */
 	stw	r0,8(r1)
@@ -99,6 +105,8 @@ _GLOBAL(plpar_hcall_8arg_2ret)
 		 	unsigned long *out4);		112(R1)
  */
 _GLOBAL(plpar_hcall_4out)
+	HMT_MEDIUM
+
 	mfcr	r0
 	stw	r0,8(r1)
 
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index 45a4ad08fbc..fe2946c5831 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -321,6 +321,10 @@ static int __devinit finish_node_interrupts(struct device_node *np,
 			char *name = get_property(ic->parent, "name", NULL);
 			if (name && !strcmp(name, "u3"))
 				np->intrs[intrcount].line += 128;
+			else if (!(name && !strcmp(name, "mac-io")))
+				/* ignore other cascaded controllers, such as
+				   the k2-sata-root */
+				break;
 		}
 		np->intrs[intrcount].sense = 1;
 		if (n > 1)
diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c
index 8dffa9ae262..35ec42de962 100644
--- a/arch/ppc64/kernel/prom_init.c
+++ b/arch/ppc64/kernel/prom_init.c
@@ -493,6 +493,113 @@ static void __init early_cmdline_parse(void)
 }
 
 /*
+ * To tell the firmware what our capabilities are, we have to pass
+ * it a fake 32-bit ELF header containing a couple of PT_NOTE sections
+ * that contain structures that contain the actual values.
+ */
+static struct fake_elf {
+	Elf32_Ehdr	elfhdr;
+	Elf32_Phdr	phdr[2];
+	struct chrpnote {
+		u32	namesz;
+		u32	descsz;
+		u32	type;
+		char	name[8];	/* "PowerPC" */
+		struct chrpdesc {
+			u32	real_mode;
+			u32	real_base;
+			u32	real_size;
+			u32	virt_base;
+			u32	virt_size;
+			u32	load_base;
+		} chrpdesc;
+	} chrpnote;
+	struct rpanote {
+		u32	namesz;
+		u32	descsz;
+		u32	type;
+		char	name[24];	/* "IBM,RPA-Client-Config" */
+		struct rpadesc {
+			u32	lpar_affinity;
+			u32	min_rmo_size;
+			u32	min_rmo_percent;
+			u32	max_pft_size;
+			u32	splpar;
+			u32	min_load;
+			u32	new_mem_def;
+			u32	ignore_me;
+		} rpadesc;
+	} rpanote;
+} fake_elf = {
+	.elfhdr = {
+		.e_ident = { 0x7f, 'E', 'L', 'F',
+			     ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
+		.e_type = ET_EXEC,	/* yeah right */
+		.e_machine = EM_PPC,
+		.e_version = EV_CURRENT,
+		.e_phoff = offsetof(struct fake_elf, phdr),
+		.e_phentsize = sizeof(Elf32_Phdr),
+		.e_phnum = 2
+	},
+	.phdr = {
+		[0] = {
+			.p_type = PT_NOTE,
+			.p_offset = offsetof(struct fake_elf, chrpnote),
+			.p_filesz = sizeof(struct chrpnote)
+		}, [1] = {
+			.p_type = PT_NOTE,
+			.p_offset = offsetof(struct fake_elf, rpanote),
+			.p_filesz = sizeof(struct rpanote)
+		}
+	},
+	.chrpnote = {
+		.namesz = sizeof("PowerPC"),
+		.descsz = sizeof(struct chrpdesc),
+		.type = 0x1275,
+		.name = "PowerPC",
+		.chrpdesc = {
+			.real_mode = ~0U,	/* ~0 means "don't care" */
+			.real_base = ~0U,
+			.real_size = ~0U,
+			.virt_base = ~0U,
+			.virt_size = ~0U,
+			.load_base = ~0U
+		},
+	},
+	.rpanote = {
+		.namesz = sizeof("IBM,RPA-Client-Config"),
+		.descsz = sizeof(struct rpadesc),
+		.type = 0x12759999,
+		.name = "IBM,RPA-Client-Config",
+		.rpadesc = {
+			.lpar_affinity = 0,
+			.min_rmo_size = 64,	/* in megabytes */
+			.min_rmo_percent = 0,
+			.max_pft_size = 48,	/* 2^48 bytes max PFT size */
+			.splpar = 1,
+			.min_load = ~0U,
+			.new_mem_def = 0
+		}
+	}
+};
+
+static void __init prom_send_capabilities(void)
+{
+	unsigned long offset = reloc_offset();
+	ihandle elfloader;
+	int ret;
+
+	elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
+	if (elfloader == 0) {
+		prom_printf("couldn't open /packages/elf-loader\n");
+		return;
+	}
+	ret = call_prom("call-method", 3, 1, ADDR("process-elf-header"),
+			elfloader, ADDR(&fake_elf));
+	call_prom("close", 1, 0, elfloader);
+}
+
+/*
  * Memory allocation strategy... our layout is normally:
  *
  *  at 14Mb or more we vmlinux, then a gap and initrd. In some rare cases, initrd
@@ -1448,6 +1555,12 @@ static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
 	}
 }
 
+/*
+ * The Open Firmware 1275 specification states properties must be 31 bytes or
+ * less, however not all firmwares obey this. Make it 64 bytes to be safe.
+ */
+#define MAX_PROPERTY_NAME 64
+
 static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 					unsigned long *mem_end)
 {
@@ -1457,7 +1570,7 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 	unsigned long soff;
 	unsigned char *valp;
 	unsigned long offset = reloc_offset();
-	char pname[32];
+	char pname[MAX_PROPERTY_NAME];
 	char *path;
 
 	path = RELOC(prom_scratch);
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index 3c76333ec3a..9f8c6087ae5 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -28,6 +28,7 @@
 #include <linux/security.h>
 #include <linux/audit.h>
 #include <linux/seccomp.h>
+#include <linux/signal.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -162,7 +163,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
 	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
 	case PTRACE_CONT: { /* restart after signal. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 		if (request == PTRACE_SYSCALL)
 			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@@ -194,7 +195,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
 
 	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 		set_single_step(child);
diff --git a/arch/ppc64/kernel/ptrace32.c b/arch/ppc64/kernel/ptrace32.c
index ee81b1b776c..16436426c7e 100644
--- a/arch/ppc64/kernel/ptrace32.c
+++ b/arch/ppc64/kernel/ptrace32.c
@@ -26,6 +26,7 @@
 #include <linux/ptrace.h>
 #include <linux/user.h>
 #include <linux/security.h>
+#include <linux/signal.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -293,7 +294,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
 	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
 	case PTRACE_CONT: { /* restart after signal. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 		if (request == PTRACE_SYSCALL)
 			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@@ -325,7 +326,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
 
 	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 		set_single_step(child);
diff --git a/arch/ppc64/kernel/signal32.c b/arch/ppc64/kernel/signal32.c
index b0e167db6af..3c2fa5c284c 100644
--- a/arch/ppc64/kernel/signal32.c
+++ b/arch/ppc64/kernel/signal32.c
@@ -657,7 +657,7 @@ static int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
 
 	/* Save user registers on the stack */
 	frame = &rt_sf->uc.uc_mcontext;
-	if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+	if (put_user(regs->gpr[1], (u32 __user *)newsp))
 		goto badframe;
 
 	if (vdso32_rt_sigtramp && current->thread.vdso_base) {
@@ -842,7 +842,7 @@ static int handle_signal32(unsigned long sig, struct k_sigaction *ka,
 		regs->link = (unsigned long) frame->mctx.tramp;
 	}
 
-	if (put_user(regs->gpr[1], (unsigned long __user *)newsp))
+	if (put_user(regs->gpr[1], (u32 __user *)newsp))
 		goto badframe;
 	regs->gpr[1] = (unsigned long) newsp;
 	regs->gpr[3] = sig;
diff --git a/arch/ppc64/kernel/smp.c b/arch/ppc64/kernel/smp.c
index 1c92da3e452..3b906cd9403 100644
--- a/arch/ppc64/kernel/smp.c
+++ b/arch/ppc64/kernel/smp.c
@@ -125,7 +125,7 @@ void __devinit smp_generic_kick_cpu(int nr)
 	 * the processor will continue on to secondary_start
 	 */
 	paca[nr].cpu_start = 1;
-	mb();
+	smp_mb();
 }
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */
@@ -256,7 +256,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
 	}
 
 	call_data = &data;
-	wmb();
+	smp_wmb();
 	/* Send a message to all other CPUs and wait for them to respond */
 	smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_CALL_FUNCTION);
 
@@ -431,7 +431,7 @@ int generic_cpu_enable(unsigned int cpu)
 
 	/* get the target out of it's holding state */
 	per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
-	wmb();
+	smp_wmb();
 
 	while (!cpu_online(cpu))
 		cpu_relax();
@@ -447,7 +447,7 @@ void generic_cpu_die(unsigned int cpu)
 	int i;
 
 	for (i = 0; i < 100; i++) {
-		rmb();
+		smp_rmb();
 		if (per_cpu(cpu_state, cpu) == CPU_DEAD)
 			return;
 		msleep(100);
@@ -463,7 +463,7 @@ void generic_mach_cpu_die(void)
 	cpu = smp_processor_id();
 	printk(KERN_DEBUG "CPU%d offline\n", cpu);
 	__get_cpu_var(cpu_state) = CPU_DEAD;
-	wmb();
+	smp_wmb();
 	while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
 		cpu_relax();
 
@@ -515,7 +515,7 @@ int __devinit __cpu_up(unsigned int cpu)
 	 * be written out to main store before we release
 	 * the processor.
 	 */
-	mb();
+	smp_mb();
 
 	/* wake up cpus */
 	DBG("smp: kicking cpu %d\n", cpu);
diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c
index 77ded5a363b..772a465b49f 100644
--- a/arch/ppc64/kernel/time.c
+++ b/arch/ppc64/kernel/time.c
@@ -221,15 +221,15 @@ static __inline__ void timer_recalc_offset(unsigned long cur_tb)
 	temp_varp->tb_to_xs = do_gtod.varp->tb_to_xs;
 	temp_varp->tb_orig_stamp = new_tb_orig_stamp;
 	temp_varp->stamp_xsec = new_stamp_xsec;
-	mb();
+	smp_mb();
 	do_gtod.varp = temp_varp;
 	do_gtod.var_idx = temp_idx;
 
 	++(systemcfg->tb_update_count);
-	wmb();
+	smp_wmb();
 	systemcfg->tb_orig_stamp = new_tb_orig_stamp;
 	systemcfg->stamp_xsec = new_stamp_xsec;
-	wmb();
+	smp_wmb();
 	++(systemcfg->tb_update_count);
 }
 
@@ -648,7 +648,7 @@ void ppc_adjtimex(void)
 	temp_varp->tb_to_xs = new_tb_to_xs;
 	temp_varp->stamp_xsec = new_stamp_xsec;
 	temp_varp->tb_orig_stamp = do_gtod.varp->tb_orig_stamp;
-	mb();
+	smp_mb();
 	do_gtod.varp = temp_varp;
 	do_gtod.var_idx = temp_idx;
 
@@ -662,10 +662,10 @@ void ppc_adjtimex(void)
 	 * loops back and reads them again until this criteria is met.
 	 */
 	++(systemcfg->tb_update_count);
-	wmb();
+	smp_wmb();
 	systemcfg->tb_to_xs = new_tb_to_xs;
 	systemcfg->stamp_xsec = new_stamp_xsec;
-	wmb();
+	smp_wmb();
 	++(systemcfg->tb_update_count);
 
 	write_sequnlock_irqrestore( &xtime_lock, flags );
diff --git a/arch/ppc64/kernel/vdso32/Makefile b/arch/ppc64/kernel/vdso32/Makefile
index ede2f7e477c..0b1b0df973e 100644
--- a/arch/ppc64/kernel/vdso32/Makefile
+++ b/arch/ppc64/kernel/vdso32/Makefile
@@ -1,7 +1,7 @@
 
 # List of files in the vdso, has to be asm only for now
 
-obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
+obj-vdso32 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
 
 # Build rules
 
diff --git a/arch/ppc64/kernel/vdso32/note.S b/arch/ppc64/kernel/vdso32/note.S
new file mode 100644
index 00000000000..d4b5be4f3d5
--- /dev/null
+++ b/arch/ppc64/kernel/vdso32/note.S
@@ -0,0 +1,25 @@
+/*
+ * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
+ * Here we can supply some information useful to userland.
+ */
+
+#include <linux/uts.h>
+#include <linux/version.h>
+
+#define ASM_ELF_NOTE_BEGIN(name, flags, vendor, type)			      \
+	.section name, flags;						      \
+	.balign 4;							      \
+	.long 1f - 0f;		/* name length */			      \
+	.long 3f - 2f;		/* data length */			      \
+	.long type;		/* note type */				      \
+0:	.asciz vendor;		/* vendor name */			      \
+1:	.balign 4;							      \
+2:
+
+#define ASM_ELF_NOTE_END						      \
+3:	.balign 4;		/* pad out section */			      \
+	.previous
+
+	ASM_ELF_NOTE_BEGIN(".note.kernel-version", "a", UTS_SYSNAME, 0)
+	.long LINUX_VERSION_CODE
+	ASM_ELF_NOTE_END
diff --git a/arch/ppc64/kernel/vdso32/vdso32.lds.S b/arch/ppc64/kernel/vdso32/vdso32.lds.S
index cca27bd03a5..11290c902ba 100644
--- a/arch/ppc64/kernel/vdso32/vdso32.lds.S
+++ b/arch/ppc64/kernel/vdso32/vdso32.lds.S
@@ -20,6 +20,8 @@ SECTIONS
   .gnu.version_d  : { *(.gnu.version_d) }
   .gnu.version_r  : { *(.gnu.version_r) }
 
+  .note		  : { *(.note.*) } 			:text	:note
+
   . = ALIGN (16);
   .text :
   {
@@ -87,6 +89,7 @@ SECTIONS
 PHDRS
 {
   text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
+  note PT_NOTE FLAGS(4); /* PF_R */
   dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
   eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
 }
diff --git a/arch/ppc64/kernel/vdso64/Makefile b/arch/ppc64/kernel/vdso64/Makefile
index bd3f70b1a38..ab39988452c 100644
--- a/arch/ppc64/kernel/vdso64/Makefile
+++ b/arch/ppc64/kernel/vdso64/Makefile
@@ -1,6 +1,6 @@
 # List of files in the vdso, has to be asm only for now
 
-obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o
+obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
 
 # Build rules
 
diff --git a/arch/ppc64/kernel/vdso64/note.S b/arch/ppc64/kernel/vdso64/note.S
new file mode 100644
index 00000000000..dc2a509f7e8
--- /dev/null
+++ b/arch/ppc64/kernel/vdso64/note.S
@@ -0,0 +1 @@
+#include "../vdso32/note.S"
diff --git a/arch/ppc64/kernel/vdso64/vdso64.lds.S b/arch/ppc64/kernel/vdso64/vdso64.lds.S
index 942c815c7bc..9cb28181da8 100644
--- a/arch/ppc64/kernel/vdso64/vdso64.lds.S
+++ b/arch/ppc64/kernel/vdso64/vdso64.lds.S
@@ -18,12 +18,14 @@ SECTIONS
   .gnu.version_d  : { *(.gnu.version_d) }
   .gnu.version_r  : { *(.gnu.version_r) }
 
+  .note		  : { *(.note.*) }		:text	:note
+
   . = ALIGN (16);
   .text           :
   {
     *(.text .stub .text.* .gnu.linkonce.t.*)
     *(.sfpr .glink)
-  }
+  }						:text
   PROVIDE (__etext = .);
   PROVIDE (_etext = .);
   PROVIDE (etext = .);
@@ -88,6 +90,7 @@ SECTIONS
 PHDRS
 {
   text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
+  note PT_NOTE FLAGS(4); /* PF_R */
   dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
   eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
 }