11 files changed, 50 insertions, 69 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ca7acb0c79f..6ffae2d2b3f 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 0baf64ec80d..30a30bf559e 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 33c63bcf69f..cc4e9eb1c13 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 568ea335d61..3d2abd95c7a 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 1c7ea5e0631..a6282b625b4 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 37273f518a3..3d83c3b84f0 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 0073a04047e..426c269e552 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 d137abd241f..ed7fcfe5fd3 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 3e18241b6f3..950ffc5848c 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 19d37730b66..eb2dece76a5 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 58c61219d08..d7d40033945 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;
 }