7 files changed, 79 insertions, 17 deletions

diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index ce68708bbad..bdca46e0838 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -4,9 +4,7 @@
 
 subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
 
-ifeq ($(CONFIG_PPC64),y)
-EXTRA_CFLAGS    += -mno-minimal-toc
-endif
+ccflags-$(CONFIG_PPC64) := -mno-minimal-toc
 
 obj-y                           := fault.o mem.o pgtable.o gup.o \
                                    init_$(CONFIG_WORD_SIZE).o \
@@ -25,7 +23,7 @@ obj-$(CONFIG_PPC_STD_MMU)	+= hash_low_$(CONFIG_WORD_SIZE).o \
                                    mmu_context_hash$(CONFIG_WORD_SIZE).o
 obj-$(CONFIG_40x)               += 40x_mmu.o
 obj-$(CONFIG_44x)               += 44x_mmu.o
-obj-$(CONFIG_FSL_BOOKE)         += fsl_booke_mmu.o
+obj-$(CONFIG_PPC_FSL_BOOK3E)    += fsl_booke_mmu.o
 obj-$(CONFIG_NEED_MULTIPLE_NODES) += numa.o
 obj-$(CONFIG_PPC_MM_SLICES)     += slice.o
 ifeq ($(CONFIG_HUGETLB_PAGE),y)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 1bd712c33ce..54f4fb994e9 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -30,6 +30,7 @@
 #include <linux/kprobes.h>
 #include <linux/kdebug.h>
 #include <linux/perf_event.h>
+#include <linux/magic.h>
 
 #include <asm/firmware.h>
 #include <asm/page.h>
@@ -385,6 +386,7 @@ do_sigbus:
 void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
 {
         const struct exception_table_entry *entry;
+        unsigned long *stackend;
 
         /* Are we prepared to handle this fault?  */
         if ((entry = search_exception_tables(regs->nip)) != NULL) {
@@ -413,5 +415,9 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
         printk(KERN_ALERT "Faulting instruction address: 0x%08lx\n",
                 regs->nip);
 
+        stackend = end_of_stack(current);
+        if (current != &init_task && *stackend != STACK_END_MAGIC)
+                printk(KERN_ALERT "Thread overran stack, or stack corrupted\n");
+
         die("Kernel access of bad area", regs, sig);
 }
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index cde270847e7..f7802c8bba0 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -57,11 +57,6 @@
 
 unsigned int tlbcam_index;
 
-
-#if defined(CONFIG_LOWMEM_CAM_NUM_BOOL) && (CONFIG_LOWMEM_CAM_NUM >= NUM_TLBCAMS)
-#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
-#endif
-
 #define NUM_TLBCAMS     (64)
 struct tlbcam TLBCAM[NUM_TLBCAMS];
 
@@ -138,7 +133,8 @@ static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
         if (mmu_has_feature(MMU_FTR_BIG_PHYS))
                 TLBCAM[index].MAS7 = (u64)phys >> 32;
 
-        if (flags & _PAGE_USER) {
+        /* Below is unlikely -- only for large user pages or similar */
+        if (pte_user(flags)) {
            TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR;
            TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0);
         }
@@ -185,6 +181,12 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx)
         return amount_mapped;
 }
 
+#ifdef CONFIG_PPC32
+
+#if defined(CONFIG_LOWMEM_CAM_NUM_BOOL) && (CONFIG_LOWMEM_CAM_NUM >= NUM_TLBCAMS)
+#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
+#endif
+
 unsigned long __init mmu_mapin_ram(unsigned long top)
 {
         return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1;
@@ -225,3 +227,4 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
         /* 64M mapped initially according to head_fsl_booke.S */
         memblock_set_current_limit(min_t(u64, limit, 0x04000000));
 }
+#endif
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index ddfd7ad4e1d..5ce99848d91 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -334,7 +334,7 @@ static int __cpuinit mmu_context_cpu_notify(struct notifier_block *self,
         /* We don't touch CPU 0 map, it's allocated at aboot and kept
          * around forever
          */
-        if (cpu == 0)
+        if (cpu == boot_cpuid)
                 return NOTIFY_OK;
 
         switch (action) {
@@ -420,9 +420,11 @@ void __init mmu_context_init(void)
          */
         context_map = alloc_bootmem(CTX_MAP_SIZE);
         context_mm = alloc_bootmem(sizeof(void *) * (last_context + 1));
+#ifndef CONFIG_SMP
         stale_map[0] = alloc_bootmem(CTX_MAP_SIZE);
+#else
+        stale_map[boot_cpuid] = alloc_bootmem(CTX_MAP_SIZE);
 
-#ifdef CONFIG_SMP
         register_cpu_notifier(&mmu_context_cpu_nb);
 #endif
 
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 63b84a0d3b1..dd0a2589591 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -140,10 +140,13 @@ extern void wii_memory_fixups(void);
 extern void MMU_init_hw(void);
 extern unsigned long mmu_mapin_ram(unsigned long top);
 
-#elif defined(CONFIG_FSL_BOOKE)
+#elif defined(CONFIG_PPC_FSL_BOOK3E)
+extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx);
+#ifdef CONFIG_PPC32
 extern void MMU_init_hw(void);
 extern unsigned long mmu_mapin_ram(unsigned long top);
 extern void adjust_total_lowmem(void);
+#endif
 extern void loadcam_entry(unsigned int index);
 
 struct tlbcam {
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index 6a0f20c2546..36c0c449a89 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -349,11 +349,47 @@ void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address)
 
 static void setup_page_sizes(void)
 {
-        unsigned int tlb0cfg = mfspr(SPRN_TLB0CFG);
-        unsigned int tlb0ps = mfspr(SPRN_TLB0PS);
-        unsigned int eptcfg = mfspr(SPRN_EPTCFG);
+        unsigned int tlb0cfg;
+        unsigned int tlb0ps;
+        unsigned int eptcfg;
         int i, psize;
 
+#ifdef CONFIG_PPC_FSL_BOOK3E
+        unsigned int mmucfg = mfspr(SPRN_MMUCFG);
+
+        if (((mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V1) &&
+                (mmu_has_feature(MMU_FTR_TYPE_FSL_E))) {
+                unsigned int tlb1cfg = mfspr(SPRN_TLB1CFG);
+                unsigned int min_pg, max_pg;
+
+                min_pg = (tlb1cfg & TLBnCFG_MINSIZE) >> TLBnCFG_MINSIZE_SHIFT;
+                max_pg = (tlb1cfg & TLBnCFG_MAXSIZE) >> TLBnCFG_MAXSIZE_SHIFT;
+
+                for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) {
+                        struct mmu_psize_def *def;
+                        unsigned int shift;
+
+                        def = &mmu_psize_defs[psize];
+                        shift = def->shift;
+
+                        if (shift == 0)
+                                continue;
+
+                        /* adjust to be in terms of 4^shift Kb */
+                        shift = (shift - 10) >> 1;
+
+                        if ((shift >= min_pg) && (shift <= max_pg))
+                                def->flags |= MMU_PAGE_SIZE_DIRECT;
+                }
+
+                goto no_indirect;
+        }
+#endif
+
+        tlb0cfg = mfspr(SPRN_TLB0CFG);
+        tlb0ps = mfspr(SPRN_TLB0PS);
+        eptcfg = mfspr(SPRN_EPTCFG);
+
         /* Look for supported direct sizes */
         for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) {
                 struct mmu_psize_def *def = &mmu_psize_defs[psize];
@@ -505,6 +541,20 @@ static void __early_init_mmu(int boot_cpu)
          */
         linear_map_top = memblock_end_of_DRAM();
 
+#ifdef CONFIG_PPC_FSL_BOOK3E
+        if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) {
+                unsigned int num_cams;
+
+                /* use a quarter of the TLBCAM for bolted linear map */
+                num_cams = (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) / 4;
+                linear_map_top = map_mem_in_cams(linear_map_top, num_cams);
+
+                /* limit memory so we dont have linear faults */
+                memblock_enforce_memory_limit(linear_map_top);
+                memblock_analyze();
+        }
+#endif
+
         /* A sync won't hurt us after mucking around with
          * the MMU configuration
          */
diff --git a/arch/powerpc/mm/tlb_nohash_low.S b/arch/powerpc/mm/tlb_nohash_low.S
index b9d9fed8f36..af405eefe48 100644
--- a/arch/powerpc/mm/tlb_nohash_low.S
+++ b/arch/powerpc/mm/tlb_nohash_low.S
@@ -367,7 +367,7 @@ _GLOBAL(set_context)
 #error Unsupported processor type !
 #endif
 
-#if defined(CONFIG_FSL_BOOKE)
+#if defined(CONFIG_PPC_FSL_BOOK3E)
 /*
  * extern void loadcam_entry(unsigned int index)
  *