Merge ../linux-2.6

11 files changed, 50 insertions, 69 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ca7acb0c79f0..6ffae2d2b3fa 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -605,6 +605,7 @@ config NODES_SPAN_OTHER_NODES
 
 config PPC_64K_PAGES
 	bool "64k page size"
+	depends on PPC64
 	help
 	  This option changes the kernel logical page size to 64k. On machines
           without processor support for 64k pages, the kernel will simulate
@@ -916,8 +917,21 @@ source "arch/powerpc/platforms/iseries/Kconfig"
 
 source "lib/Kconfig"
 
+menu "Instrumentation Support"
+        depends on EXPERIMENTAL
+
 source "arch/powerpc/oprofile/Kconfig"
 
+config KPROBES
+	bool "Kprobes (EXPERIMENTAL)"
+	help
+	  Kprobes allows you to trap at almost any kernel address and
+	  execute a callback function.  register_kprobe() establishes
+	  a probepoint and specifies the callback.  Kprobes is useful
+	  for kernel debugging, non-intrusive instrumentation and testing.
+	  If in doubt, say "N".
+endmenu
+
 source "arch/powerpc/Kconfig.debug"
 
 source "security/Kconfig"
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 0baf64ec80d0..30a30bf559ea 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -9,16 +9,6 @@ config DEBUG_STACKOVERFLOW
 	  This option will cause messages to be printed if free stack space
 	  drops below a certain limit.
 
-config KPROBES
-	bool "Kprobes"
-	depends on DEBUG_KERNEL && PPC64
-	help
-	  Kprobes allows you to trap at almost any kernel address and
-	  execute a callback function.  register_kprobe() establishes
-	  a probepoint and specifies the callback.  Kprobes is useful
-	  for kernel debugging, non-intrusive instrumentation and testing.
-	  If in doubt, say "N".
-
 config DEBUG_STACK_USAGE
 	bool "Stack utilization instrumentation"
 	depends on DEBUG_KERNEL && PPC64
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 33c63bcf69f8..cc4e9eb1c13f 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -929,6 +929,16 @@ struct cpu_spec	cpu_specs[] = {
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 	},
+	{ /* 440SPe Rev. A */
+		.pvr_mask		= 0xff000fff,
+		.pvr_value		= 0x53000890,
+		.cpu_name		= "440SPe Rev. A",
+		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
+			CPU_FTR_USE_TB,
+		.cpu_user_features	= PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+	},
 #endif /* CONFIG_44x */
 #ifdef CONFIG_FSL_BOOKE
 	{	/* e200z5 */
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 568ea335d616..3d2abd95c7ae 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -248,46 +248,10 @@ void ptrace_disable(struct task_struct *child)
 	clear_single_step(child);
 }
 
-long sys_ptrace(long request, long pid, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-	struct task_struct *child;
 	int ret = -EPERM;
 
-	lock_kernel();
-	if (request == PTRACE_TRACEME) {
-		/* are we already being traced? */
-		if (current->ptrace & PT_PTRACED)
-			goto out;
-		ret = security_ptrace(current->parent, current);
-		if (ret)
-			goto out;
-		/* set the ptrace bit in the process flags. */
-		current->ptrace |= PT_PTRACED;
-		ret = 0;
-		goto out;
-	}
-	ret = -ESRCH;
-	read_lock(&tasklist_lock);
-	child = find_task_by_pid(pid);
-	if (child)
-		get_task_struct(child);
-	read_unlock(&tasklist_lock);
-	if (!child)
-		goto out;
-
-	ret = -EPERM;
-	if (pid == 1)		/* you may not mess with init */
-		goto out_tsk;
-
-	if (request == PTRACE_ATTACH) {
-		ret = ptrace_attach(child);
-		goto out_tsk;
-	}
-
-	ret = ptrace_check_attach(child, request == PTRACE_KILL);
-	if (ret < 0)
-		goto out_tsk;
-
 	switch (request) {
 	/* when I and D space are separate, these will need to be fixed. */
 	case PTRACE_PEEKTEXT: /* read word at location addr. */
@@ -540,10 +504,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
-out_tsk:
-	put_task_struct(child);
-out:
-	unlock_kernel();
+
 	return ret;
 }
 
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 1c7ea5e06311..a6282b625b44 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -70,6 +70,7 @@
 #include <asm/iseries/it_lp_queue.h>
 #include <asm/iseries/hv_call_xm.h>
 #endif
+#include <asm/smp.h>
 
 /* keep track of when we need to update the rtc */
 time_t last_rtc_update;
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 37273f518a35..3d83c3b84f0e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -328,12 +328,14 @@ static void __init htab_init_page_sizes(void)
 	 */
 	if (mmu_psize_defs[MMU_PAGE_16M].shift)
 		mmu_huge_psize = MMU_PAGE_16M;
+	/* With 4k/4level pagetables, we can't (for now) cope with a
+	 * huge page size < PMD_SIZE */
 	else if (mmu_psize_defs[MMU_PAGE_1M].shift)
 		mmu_huge_psize = MMU_PAGE_1M;
 
 	/* Calculate HPAGE_SHIFT and sanity check it */
-	if (mmu_psize_defs[mmu_huge_psize].shift > 16 &&
-	    mmu_psize_defs[mmu_huge_psize].shift < 28)
+	if (mmu_psize_defs[mmu_huge_psize].shift > MIN_HUGEPTE_SHIFT &&
+	    mmu_psize_defs[mmu_huge_psize].shift < SID_SHIFT)
 		HPAGE_SHIFT = mmu_psize_defs[mmu_huge_psize].shift;
 	else
 		HPAGE_SHIFT = 0; /* No huge pages dude ! */
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 0073a04047e4..426c269e552e 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -212,6 +212,12 @@ static int prepare_high_area_for_htlb(struct mm_struct *mm, unsigned long area)
 
 	BUG_ON(area >= NUM_HIGH_AREAS);
 
+	/* Hack, so that each addresses is controlled by exactly one
+	 * of the high or low area bitmaps, the first high area starts
+	 * at 4GB, not 0 */
+	if (start == 0)
+		start = 0x100000000UL;
+
 	/* Check no VMAs are in the region */
 	vma = find_vma(mm, start);
 	if (vma && (vma->vm_start < end))
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index d137abd241ff..ed7fcfe5fd37 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -188,9 +188,9 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
 
 	if (Hash == 0)
 		return;
-	pmd = pmd_offset(pgd_offset(vma->vm_mm, address), address);
+	pmd = pmd_offset(pgd_offset(mm, ea), ea);
 	if (!pmd_none(*pmd))
-		add_hash_page(vma->vm_mm->context, address, pmd_val(*pmd));
+		add_hash_page(mm->context, ea, pmd_val(*pmd));
 }
 
 /*
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 3e18241b6f35..950ffc5848c7 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -80,12 +80,17 @@ _GLOBAL(slb_miss_kernel_load_virtual)
 BEGIN_FTR_SECTION
 	b	1f
 END_FTR_SECTION_IFCLR(CPU_FTR_16M_PAGE)
+	cmpldi	r10,16
+
+	lhz	r9,PACALOWHTLBAREAS(r13)
+	mr	r11,r10
+	blt	5f
+
 	lhz	r9,PACAHIGHHTLBAREAS(r13)
 	srdi	r11,r10,(HTLB_AREA_SHIFT-SID_SHIFT)
-	srd	r9,r9,r11
-	lhz	r11,PACALOWHTLBAREAS(r13)
-	srd	r11,r11,r10
-	or.	r9,r9,r11
+
+5:	srd	r9,r9,r11
+	andi.	r9,r9,1
 	beq	1f
 _GLOBAL(slb_miss_user_load_huge)
 	li	r11,0
diff --git a/arch/powerpc/oprofile/Kconfig b/arch/powerpc/oprofile/Kconfig
index 19d37730b664..eb2dece76a54 100644
--- a/arch/powerpc/oprofile/Kconfig
+++ b/arch/powerpc/oprofile/Kconfig
@@ -1,7 +1,3 @@
-
-menu "Profiling support"
-	depends on EXPERIMENTAL
-
 config PROFILING
 	bool "Profiling support (EXPERIMENTAL)"
 	help
@@ -19,5 +15,3 @@ config OPROFILE
 
 	  If unsure, say N.
 
-endmenu
-
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 58c61219d08e..d7d400339458 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -286,10 +286,8 @@ static struct property *new_property(const char *name, const int length,
 	return new;
 
 cleanup:
-	if (new->name)
-		kfree(new->name);
-	if (new->value)
-		kfree(new->value);
+	kfree(new->name);
+	kfree(new->value);
 	kfree(new);
 	return NULL;
 }