12 files changed, 21 insertions, 40 deletions

diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 1cb261f225d5..df6c2bcde067 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -393,13 +393,6 @@ void flush_thread(void)
 {
         struct task_struct *tsk = current;
 
-        /*
-         * Remove function-return probe instances associated with this task
-         * and put them back on the free list. Do not insert an exit probe for
-         * this function, it will be disabled by kprobe_flush_task if you do.
-         */
-        kprobe_flush_task(tsk);
-
         memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8);
         memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));        
         /*
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index c96bea14b98f..f6bc48da4d2a 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -132,7 +132,7 @@ struct pci_bus * __devinit pcibios_scan_root(int busnum)
                 }
         }
 
-        printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
+        printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
 
         return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, NULL);
 }
@@ -144,7 +144,7 @@ static int __init pcibios_init(void)
         struct cpuinfo_x86 *c = &boot_cpu_data;
 
         if (!raw_pci_ops) {
-                printk("PCI: System does not support PCI\n");
+                printk(KERN_WARNING "PCI: System does not support PCI\n");
                 return 0;
         }
 
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c
index 30b7e9b4f6a2..94331d6be7a3 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -201,7 +201,7 @@ static int __init pci_sanity_check(struct pci_raw_ops *o)
                         return 1;
         }
 
-        DBG("PCI: Sanity check failed\n");
+        DBG(KERN_WARNING "PCI: Sanity check failed\n");
         return 0;
 }
 
diff --git a/arch/i386/pci/i386.c b/arch/i386/pci/i386.c
index 6d6338500c3c..ed2c8c899bd3 100644
--- a/arch/i386/pci/i386.c
+++ b/arch/i386/pci/i386.c
@@ -221,6 +221,11 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask)
                         continue;
 
                 r = &dev->resource[idx];
+                if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+                        continue;
+                if ((idx == PCI_ROM_RESOURCE) &&
+                                (!(r->flags & IORESOURCE_ROM_ENABLE)))
+                        continue;
                 if (!r->start && r->end) {
                         printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev));
                         return -EINVAL;
@@ -230,8 +235,6 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask)
                 if (r->flags & IORESOURCE_MEM)
                         cmd |= PCI_COMMAND_MEMORY;
         }
-        if (dev->resource[PCI_ROM_RESOURCE].start)
-                cmd |= PCI_COMMAND_MEMORY;
         if (cmd != old_cmd) {
                 printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd);
                 pci_write_config_word(dev, PCI_COMMAND, cmd);
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 4305d2ba76f6..2e33665d9c18 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -718,13 +718,6 @@ kernel_thread_helper (int (*fn)(void *), void *arg)
 void
 flush_thread (void)
 {
-        /*
-         * Remove function-return probe instances associated with this task
-         * and put them back on the free list. Do not insert an exit probe for
-         * this function, it will be disabled by kprobe_flush_task if you do.
-         */
-        kprobe_flush_task(current);
-
         /* drop floating-point and debug-register state if it exists: */
         current->thread.flags &= ~(IA64_THREAD_FPH_VALID | IA64_THREAD_DBG_VALID);
         ia64_drop_fpu(current);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index de69fb37c731..a5a7542a8ff3 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -457,7 +457,6 @@ void flush_thread(void)
         if (t->flags & _TIF_ABI_PENDING)
                 t->flags ^= (_TIF_ABI_PENDING | _TIF_32BIT);
 #endif
-        kprobe_flush_task(current);
 
 #ifndef CONFIG_SMP
         if (last_task_used_math == current)
diff --git a/arch/powerpc/mm/4xx_mmu.c b/arch/powerpc/mm/4xx_mmu.c
index b7bcbc232f39..4d006aa1a0d1 100644
--- a/arch/powerpc/mm/4xx_mmu.c
+++ b/arch/powerpc/mm/4xx_mmu.c
@@ -110,13 +110,11 @@ unsigned long __init mmu_mapin_ram(void)
                 pmd_t *pmdp;
                 unsigned long val = p | _PMD_SIZE_16M | _PAGE_HWEXEC | _PAGE_HWWRITE;
 
-                spin_lock(&init_mm.page_table_lock);
                 pmdp = pmd_offset(pgd_offset_k(v), v);
                 pmd_val(*pmdp++) = val;
                 pmd_val(*pmdp++) = val;
                 pmd_val(*pmdp++) = val;
                 pmd_val(*pmdp++) = val;
-                spin_unlock(&init_mm.page_table_lock);
 
                 v += LARGE_PAGE_SIZE_16M;
                 p += LARGE_PAGE_SIZE_16M;
@@ -127,10 +125,8 @@ unsigned long __init mmu_mapin_ram(void)
                 pmd_t *pmdp;
                 unsigned long val = p | _PMD_SIZE_4M | _PAGE_HWEXEC | _PAGE_HWWRITE;
 
-                spin_lock(&init_mm.page_table_lock);
                 pmdp = pmd_offset(pgd_offset_k(v), v);
                 pmd_val(*pmdp) = val;
-                spin_unlock(&init_mm.page_table_lock);
 
                 v += LARGE_PAGE_SIZE_4M;
                 p += LARGE_PAGE_SIZE_4M;
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 426c269e552e..f867bba893ca 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -287,15 +287,15 @@ static int open_high_hpage_areas(struct mm_struct *mm, u16 newareas)
 
 int prepare_hugepage_range(unsigned long addr, unsigned long len)
 {
-        int err;
+        int err = 0;
 
         if ( (addr+len) < addr )
                 return -EINVAL;
 
-        if ((addr + len) < 0x100000000UL)
+        if (addr < 0x100000000UL)
                 err = open_low_hpage_areas(current->mm,
                                           LOW_ESID_MASK(addr, len));
-        else
+        if ((addr + len) >= 0x100000000UL)
                 err = open_high_hpage_areas(current->mm,
                                             HTLB_AREA_MASK(addr, len));
         if (err) {
@@ -754,9 +754,7 @@ repeat:
         }
 
         /*
-         * No need to use ldarx/stdcx here because all who
-         * might be updating the pte will hold the
-         * page_table_lock
+         * No need to use ldarx/stdcx here
          */
         *ptep = __pte(new_pte & ~_PAGE_BUSY);
 
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 4bd7b0a70996..ed6ed2e30dac 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -495,7 +495,7 @@ EXPORT_SYMBOL(flush_icache_user_range);
  * We use it to preload an HPTE into the hash table corresponding to
  * the updated linux PTE.
  * 
- * This must always be called with the mm->page_table_lock held
+ * This must always be called with the pte lock held.
  */
 void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
                       pte_t pte)
diff --git a/arch/powerpc/mm/tlb_32.c b/arch/powerpc/mm/tlb_32.c
index 6c3dc3c44c86..ad580f3742e5 100644
--- a/arch/powerpc/mm/tlb_32.c
+++ b/arch/powerpc/mm/tlb_32.c
@@ -149,6 +149,12 @@ void flush_tlb_mm(struct mm_struct *mm)
                 return;
         }
 
+        /*
+         * It is safe to go down the mm's list of vmas when called
+         * from dup_mmap, holding mmap_sem.  It would also be safe from
+         * unmap_region or exit_mmap, but not from vmtruncate on SMP -
+         * but it seems dup_mmap is the only SMP case which gets here.
+         */
         for (mp = mm->mmap; mp != NULL; mp = mp->vm_next)
                 flush_range(mp->vm_mm, mp->vm_start, mp->vm_end);
         FINISH_FLUSH;
diff --git a/arch/powerpc/mm/tlb_64.c b/arch/powerpc/mm/tlb_64.c
index 53e31b834ace..859d29a0cac5 100644
--- a/arch/powerpc/mm/tlb_64.c
+++ b/arch/powerpc/mm/tlb_64.c
@@ -95,7 +95,7 @@ static void pte_free_submit(struct pte_freelist_batch *batch)
 
 void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf)
 {
-        /* This is safe as we are holding page_table_lock */
+        /* This is safe since tlb_gather_mmu has disabled preemption */
         cpumask_t local_cpumask = cpumask_of_cpu(smp_processor_id());
         struct pte_freelist_batch **batchp = &__get_cpu_var(pte_freelist_cur);
 
@@ -206,7 +206,7 @@ void __flush_tlb_pending(struct ppc64_tlb_batch *batch)
 
 void pte_free_finish(void)
 {
-        /* This is safe as we are holding page_table_lock */
+        /* This is safe since tlb_gather_mmu has disabled preemption */
         struct pte_freelist_batch **batchp = &__get_cpu_var(pte_freelist_cur);
 
         if (*batchp == NULL)
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 5afd63e8cef7..7519fc520eb3 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -351,13 +351,6 @@ void flush_thread(void)
         struct task_struct *tsk = current;
         struct thread_info *t = current_thread_info();
 
-        /*
-         * Remove function-return probe instances associated with this task
-         * and put them back on the free list. Do not insert an exit probe for
-         * this function, it will be disabled by kprobe_flush_task if you do.
-         */
-        kprobe_flush_task(tsk);
-
         if (t->flags & _TIF_ABI_PENDING)
                 t->flags ^= (_TIF_ABI_PENDING | _TIF_IA32);