5 files changed, 15 insertions, 9 deletions

diff --git a/arch/ppc64/kernel/bpa_iommu.c b/arch/ppc64/kernel/bpa_iommu.c
index f33a7bccb0d7..507eb9d0223f 100644
--- a/arch/ppc64/kernel/bpa_iommu.c
+++ b/arch/ppc64/kernel/bpa_iommu.c
@@ -99,7 +99,11 @@ get_iost_entry(unsigned long iopt_base, unsigned long io_address, unsigned page_
                 break;
 
         default: /* not a known compile time constant */
-                BUILD_BUG_ON(1);
+                {
+                        /* BUILD_BUG_ON() is not usable here */
+                        extern void __get_iost_entry_bad_page_size(void);
+                        __get_iost_entry_bad_page_size();
+                }
                 break;
         }
 
diff --git a/arch/ppc64/kernel/kprobes.c b/arch/ppc64/kernel/kprobes.c
index 7e80d49c589a..9c6facc24f70 100644
--- a/arch/ppc64/kernel/kprobes.c
+++ b/arch/ppc64/kernel/kprobes.c
@@ -59,9 +59,9 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
 
         /* insn must be on a special executable page on ppc64 */
         if (!ret) {
-                up(&kprobe_mutex);
-                p->ainsn.insn = get_insn_slot();
                 down(&kprobe_mutex);
+                p->ainsn.insn = get_insn_slot();
+                up(&kprobe_mutex);
                 if (!p->ainsn.insn)
                         ret = -ENOMEM;
         }
@@ -90,9 +90,9 @@ void __kprobes arch_disarm_kprobe(struct kprobe *p)
 
 void __kprobes arch_remove_kprobe(struct kprobe *p)
 {
-        up(&kprobe_mutex);
-        free_insn_slot(p->ainsn.insn);
         down(&kprobe_mutex);
+        free_insn_slot(p->ainsn.insn);
+        up(&kprobe_mutex);
 }
 
 static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
diff --git a/arch/ppc64/kernel/machine_kexec.c b/arch/ppc64/kernel/machine_kexec.c
index 4775f12a013c..bf7cc4f8210f 100644
--- a/arch/ppc64/kernel/machine_kexec.c
+++ b/arch/ppc64/kernel/machine_kexec.c
@@ -205,6 +205,7 @@ static void kexec_prepare_cpus(void)
                         continue;
 
                 while (paca[i].hw_cpu_id != -1) {
+                        barrier();
                         if (!cpu_possible(i)) {
                                 printk("kexec: cpu %d hw_cpu_id %d is not"
                                                 " possible, ignoring\n",
diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c
index eb1bbb5b6c16..bfd385b7713c 100644
--- a/arch/ppc64/mm/hash_native.c
+++ b/arch/ppc64/mm/hash_native.c
@@ -343,7 +343,7 @@ static void native_flush_hash_range(unsigned long context,
         hpte_t *hptep;
         unsigned long hpte_v;
         struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
-        unsigned long large;
+        unsigned long large = batch->large;
 
         local_irq_save(flags);
 
@@ -356,7 +356,6 @@ static void native_flush_hash_range(unsigned long context,
 
                 va = (vsid << 28) | (batch->addr[i] & 0x0fffffff);
                 batch->vaddr[j] = va;
-                large = pte_huge(batch->pte[i]);
                 if (large)
                         vpn = va >> HPAGE_SHIFT;
                 else
@@ -406,7 +405,7 @@ static void native_flush_hash_range(unsigned long context,
                 asm volatile("ptesync":::"memory");
 
                 for (i = 0; i < j; i++)
-                        __tlbie(batch->vaddr[i], 0);
+                        __tlbie(batch->vaddr[i], large);
 
                 asm volatile("eieio; tlbsync; ptesync":::"memory");
 
diff --git a/arch/ppc64/mm/tlb.c b/arch/ppc64/mm/tlb.c
index d8a6593a13f0..21fbffb23a43 100644
--- a/arch/ppc64/mm/tlb.c
+++ b/arch/ppc64/mm/tlb.c
@@ -143,7 +143,8 @@ void hpte_update(struct mm_struct *mm, unsigned long addr,
          * up scanning and resetting referenced bits then our batch context
          * will change mid stream.
          */
-        if (unlikely(i != 0 && context != batch->context)) {
+        if (i != 0 && (context != batch->context ||
+                       batch->large != pte_huge(pte))) {
                 flush_tlb_pending();
                 i = 0;
         }
@@ -151,6 +152,7 @@ void hpte_update(struct mm_struct *mm, unsigned long addr,
         if (i == 0) {
                 batch->context = context;
                 batch->mm = mm;
+                batch->large = pte_huge(pte);
         }
         batch->pte[i] = __pte(pte);
         batch->addr[i] = addr;