Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fixes for the SLB shadow buffer code
  [POWERPC] Fix a compile warning in powermac/feature.c
  [POWERPC] Fix a compile warning in pci_32.c
  [POWERPC] Fix parse_drconf_memory() for 64-bit start addresses
  [POWERPC] Fix num_cpus calculation in smp_call_function_map()
  [POWERPC] ps3: Fix section mismatch in ps3/setup.c
  [POWERPC] spufs: Fix affinity after introduction of node_allowed() calls
  [POWERPC] Fix special PTE code for secondary hash bucket
  [POWERPC] Expand RPN field to 34 bits when using 64k pages

4 files changed, 25 insertions, 15 deletions

diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index 4762ff7c14df..35eabfb50723 100644
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -472,10 +472,12 @@ _GLOBAL(htab_call_hpte_insert1)
         /* Now try secondary slot */
 
         /* real page number in r5, PTE RPN value + index */
-        rldicl  r5,r31,64-PTE_RPN_SHIFT,PTE_RPN_SHIFT
+        andis.  r0,r31,_PAGE_4K_PFN@h
+        srdi    r5,r31,PTE_RPN_SHIFT
+        bne-    3f
         sldi    r5,r5,PAGE_SHIFT-HW_PAGE_SHIFT
         add     r5,r5,r25
-        sldi    r5,r5,HW_PAGE_SHIFT
+3:      sldi    r5,r5,HW_PAGE_SHIFT
 
         /* Calculate secondary group hash */
         andc    r0,r27,r28
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index bc7b0cedae5e..f1789578747a 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -759,7 +759,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
                    mmu_psize_defs[mmu_vmalloc_psize].sllp) {
                 get_paca()->vmalloc_sllp =
                         mmu_psize_defs[mmu_vmalloc_psize].sllp;
-                slb_flush_and_rebolt();
+                slb_vmalloc_update();
         }
 #endif /* CONFIG_PPC_64K_PAGES */
 
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index de45aa82d97b..c12adc3ddffd 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -307,9 +307,9 @@ static void __init parse_drconf_memory(struct device_node *memory)
         const unsigned int *lm, *dm, *aa;
         unsigned int ls, ld, la;
         unsigned int n, aam, aalen;
-        unsigned long lmb_size, size;
+        unsigned long lmb_size, size, start;
         int nid, default_nid = 0;
-        unsigned int start, ai, flags;
+        unsigned int ai, flags;
 
         lm = of_get_property(memory, "ibm,lmb-size", &ls);
         dm = of_get_property(memory, "ibm,dynamic-memory", &ld);
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index 304375a73574..b0697017d0e8 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -53,7 +53,8 @@ static inline unsigned long mk_vsid_data(unsigned long ea, unsigned long flags)
         return (get_kernel_vsid(ea) << SLB_VSID_SHIFT) | flags;
 }
 
-static inline void slb_shadow_update(unsigned long esid, unsigned long vsid,
+static inline void slb_shadow_update(unsigned long ea,
+                                     unsigned long flags,
                                      unsigned long entry)
 {
         /*
@@ -61,11 +62,11 @@ static inline void slb_shadow_update(unsigned long esid, unsigned long vsid,
          * updating it.
          */
         get_slb_shadow()->save_area[entry].esid = 0;
-        barrier();
-        get_slb_shadow()->save_area[entry].vsid = vsid;
-        barrier();
-        get_slb_shadow()->save_area[entry].esid = esid;
-
+        smp_wmb();
+        get_slb_shadow()->save_area[entry].vsid = mk_vsid_data(ea, flags);
+        smp_wmb();
+        get_slb_shadow()->save_area[entry].esid = mk_esid_data(ea, entry);
+        smp_wmb();
 }
 
 static inline void create_shadowed_slbe(unsigned long ea, unsigned long flags,
@@ -76,8 +77,7 @@ static inline void create_shadowed_slbe(unsigned long ea, unsigned long flags,
          * we don't get a stale entry here if we get preempted by PHYP
          * between these two statements.
          */
-        slb_shadow_update(mk_esid_data(ea, entry), mk_vsid_data(ea, flags),
-                          entry);
+        slb_shadow_update(ea, flags, entry);
 
         asm volatile("slbmte  %0,%1" :
                      : "r" (mk_vsid_data(ea, flags)),
@@ -104,8 +104,7 @@ void slb_flush_and_rebolt(void)
                 ksp_esid_data &= ~SLB_ESID_V;
 
         /* Only third entry (stack) may change here so only resave that */
-        slb_shadow_update(ksp_esid_data,
-                          mk_vsid_data(ksp_esid_data, lflags), 2);
+        slb_shadow_update(get_paca()->kstack, lflags, 2);
 
         /* We need to do this all in asm, so we're sure we don't touch
          * the stack between the slbia and rebolting it. */
@@ -123,6 +122,15 @@ void slb_flush_and_rebolt(void)
                      : "memory");
 }
 
+void slb_vmalloc_update(void)
+{
+        unsigned long vflags;
+
+        vflags = SLB_VSID_KERNEL | mmu_psize_defs[mmu_vmalloc_psize].sllp;
+        slb_shadow_update(VMALLOC_START, vflags, 1);
+        slb_flush_and_rebolt();
+}
+
 /* Flush all user entries from the segment table of the current processor. */
 void switch_slb(struct task_struct *tsk, struct mm_struct *mm)
 {