17 files changed, 27 insertions, 20 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b6447190e1a2..e625e9e034ae 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -4,6 +4,10 @@ config PPC32
         bool
         default y if !PPC64
 
+config 32BIT
+        bool
+        default y if PPC32
+
 config 64BIT
         bool
         default y if PPC64
diff --git a/arch/powerpc/boot/div64.S b/arch/powerpc/boot/div64.S
index 722f360a32a9..d271ab542673 100644
--- a/arch/powerpc/boot/div64.S
+++ b/arch/powerpc/boot/div64.S
@@ -33,9 +33,10 @@ __div64_32:
         cntlzw  r0,r5           # we are shifting the dividend right
         li      r10,-1          # to make it < 2^32, and shifting
         srw     r10,r10,r0      # the divisor right the same amount,
-        add     r9,r4,r10       # rounding up (so the estimate cannot
+        addc    r9,r4,r10       # rounding up (so the estimate cannot
         andc    r11,r6,r10      # ever be too large, only too small)
         andc    r9,r9,r10
+        addze   r9,r9
         or      r11,r5,r11
         rotlw   r9,r9,r0
         rotlw   r11,r11,r0
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 7a9db64f3f04..42850ee00ada 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -337,7 +337,7 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
                 /* FP registers 32 -> 63 */
 #if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
                 if (current)
-                        memcpy(mem, current->thread.evr[regno-32],
+                        memcpy(mem, &current->thread.evr[regno-32],
                                         dbg_reg_def[regno].size);
 #else
                 /* fp registers not used by kernel, leave zero */
@@ -362,7 +362,7 @@ int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
         if (regno >= 32 && regno < 64) {
                 /* FP registers 32 -> 63 */
 #if defined(CONFIG_FSL_BOOKE) && defined(CONFIG_SPE)
-                memcpy(current->thread.evr[regno-32], mem,
+                memcpy(&current->thread.evr[regno-32], mem,
                                 dbg_reg_def[regno].size);
 #else
                 /* fp registers not used by kernel, leave zero */
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 428d0e538aec..b06bdae04064 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -127,7 +127,7 @@ static void kvm_patch_ins_nop(u32 *inst)
 
 static void kvm_patch_ins_b(u32 *inst, int addr)
 {
-#ifdef CONFIG_RELOCATABLE
+#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_PPC_BOOK3S)
         /* On relocatable kernels interrupts handlers and our code
            can be in different regions, so we don't patch them */
 
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 2a178b0ebcdf..ce6f61c6f871 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -497,9 +497,8 @@ static void __init emergency_stack_init(void)
 }
 
 /*
- * Called into from start_kernel, after lock_kernel has been called.
- * Initializes bootmem, which is unsed to manage page allocation until
- * mem_init is called.
+ * Called into from start_kernel this initializes bootmem, which is used
+ * to manage page allocation until mem_init is called.
  */
 void __init setup_arch(char **cmdline_p)
 {
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index b1b6043a56c4..4e5bf1edc0f2 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -23,7 +23,6 @@
 #include <linux/resource.h>
 #include <linux/times.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/sem.h>
 #include <linux/msg.h>
 #include <linux/shm.h>
diff --git a/arch/powerpc/kvm/booke_interrupts.S b/arch/powerpc/kvm/booke_interrupts.S
index 049846911ce4..1cc471faac2d 100644
--- a/arch/powerpc/kvm/booke_interrupts.S
+++ b/arch/powerpc/kvm/booke_interrupts.S
@@ -416,7 +416,7 @@ lightweight_exit:
         lwz     r3, VCPU_PC(r4)
         mtsrr0  r3
         lwz     r3, VCPU_SHARED(r4)
-        lwz     r3, VCPU_SHARED_MSR(r3)
+        lwz     r3, (VCPU_SHARED_MSR + 4)(r3)
         oris    r3, r3, KVMPPC_MSR_MASK@h
         ori     r3, r3, KVMPPC_MSR_MASK@l
         mtsrr1  r3
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 71750f2dd5d3..e3768ee9b595 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -138,8 +138,8 @@ void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 
         free_page((unsigned long)vcpu->arch.shared);
-        kvmppc_e500_tlb_uninit(vcpu_e500);
         kvm_vcpu_uninit(vcpu);
+        kvmppc_e500_tlb_uninit(vcpu_e500);
         kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
 }
 
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 2f87a1627f6c..38f756f25053 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -617,6 +617,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
         switch (ioctl) {
         case KVM_PPC_GET_PVINFO: {
                 struct kvm_ppc_pvinfo pvinfo;
+                memset(&pvinfo, 0, sizeof(pvinfo));
                 r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
                 if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
                         r = -EFAULT;
diff --git a/arch/powerpc/kvm/timing.c b/arch/powerpc/kvm/timing.c
index 46fa04f12a9b..a021f5827a33 100644
--- a/arch/powerpc/kvm/timing.c
+++ b/arch/powerpc/kvm/timing.c
@@ -35,7 +35,6 @@ void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu)
         int i;
 
         /* pause guest execution to avoid concurrent updates */
-        local_irq_disable();
         mutex_lock(&vcpu->mutex);
 
         vcpu->arch.last_exit_type = 0xDEAD;
@@ -51,7 +50,6 @@ void kvmppc_init_timing_stats(struct kvm_vcpu *vcpu)
         vcpu->arch.timing_last_enter.tv64 = 0;
 
         mutex_unlock(&vcpu->mutex);
-        local_irq_enable();
 }
 
 static void add_exit_timing(struct kvm_vcpu *vcpu, u64 duration, int type)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 83f534d862db..5e9584405c45 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -1123,7 +1123,7 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
         else
 #endif /* CONFIG_PPC_HAS_HASH_64K */
                 rc = __hash_page_4K(ea, access, vsid, ptep, trap, local, ssize,
-                                    subpage_protection(pgdir, ea));
+                                    subpage_protection(mm, ea));
 
         /* Dump some info in case of hash insertion failure, they should
          * never happen so it is really useful to know if/when they do
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 2c7e801ab20b..6a3997f98dfb 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -92,7 +92,7 @@ static void pte_free_rcu_callback(struct rcu_head *head)
 
 static void pte_free_submit(struct pte_freelist_batch *batch)
 {
-        call_rcu(&batch->rcu, pte_free_rcu_callback);
+        call_rcu_sched(&batch->rcu, pte_free_rcu_callback);
 }
 
 void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S
index 8b04c54e596f..8526bd9d2aa3 100644
--- a/arch/powerpc/mm/tlb_low_64e.S
+++ b/arch/powerpc/mm/tlb_low_64e.S
@@ -138,8 +138,11 @@
         cmpldi  cr0,r15,0                       /* Check for user region */
         std     r14,EX_TLB_ESR(r12)             /* write crazy -1 to frame */
         beq     normal_tlb_miss
+
+        li      r11,_PAGE_PRESENT|_PAGE_BAP_SX  /* Base perm */
+        oris    r11,r11,_PAGE_ACCESSED@h
         /* XXX replace the RMW cycles with immediate loads + writes */
-1:      mfspr   r10,SPRN_MAS1
+        mfspr   r10,SPRN_MAS1
         cmpldi  cr0,r15,8                       /* Check for vmalloc region */
         rlwinm  r10,r10,0,16,1                  /* Clear TID */
         mtspr   SPRN_MAS1,r10
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 36c0c449a899..2a030d89bbc6 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -585,6 +585,6 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
         ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000);
 
         /* Finally limit subsequent allocations */
-        memblock_set_current_limit(ppc64_memblock_base + ppc64_rma_size);
+        memblock_set_current_limit(first_memblock_base + ppc64_rma_size);
 }
 #endif /* CONFIG_PPC64 */
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index c667f0f02c34..3139814f6439 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -47,6 +47,12 @@ config LPARCFG
 config PPC_PSERIES_DEBUG
         depends on PPC_PSERIES && PPC_EARLY_DEBUG
         bool "Enable extra debug logging in platforms/pseries"
+        help
+          Say Y here if you want the pseries core to produce a bunch of
+          debug messages to the system log. Select this if you are having a
+          problem with the pseries core and want to see more of what is
+          going on. This does not enable debugging in lpar.c, which must
+          be manually done due to its verbosity.
         default y
 
 config PPC_SMLPAR
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 34b7dc12e731..17a11c82e6f8 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -21,8 +21,6 @@
  * Please address comments and feedback to Linas Vepstas <linas@austin.ibm.com>
  */
 
-#undef DEBUG
-
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/list.h>
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 4b7a062dee15..5fcc92a12d3e 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -25,8 +25,6 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#undef DEBUG
-
 #include <linux/pci.h>
 #include <asm/pci-bridge.h>
 #include <asm/ppc-pci.h>