6 files changed, 120 insertions, 128 deletions

diff --git a/arch/arm/mm/blockops.c b/arch/arm/mm/blockops.c
index 806c6eeb1b0c..4f5ee2d08996 100644
--- a/arch/arm/mm/blockops.c
+++ b/arch/arm/mm/blockops.c
@@ -25,13 +25,14 @@ blk_flush_kern_dcache_page(void *kaddr)
 {
         asm(
         "add    r1, r0, %0                                                      \n\
+        sub     r1, r1, %1                                                      \n\
 1:      .word   0xec401f0e      @ mcrr  p15, 0, r0, r1, c14, 0  @ blocking      \n\
         mov     r0, #0                                                          \n\
         mcr     p15, 0, r0, c7, c5, 0                                           \n\
         mcr     p15, 0, r0, c7, c10, 4                                          \n\
         mov     pc, lr"
         :
-        : "I" (PAGE_SIZE));
+        : "I" (PAGE_SIZE), "I" (L1_CACHE_BYTES));
 }
 
 /*
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index e25b4fd8412c..65bfe84b6d67 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -372,49 +372,50 @@ do_bad(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 static struct fsr_info {
         int     (*fn)(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
         int     sig;
+        int     code;
         const char *name;
 } fsr_info[] = {
         /*
          * The following are the standard ARMv3 and ARMv4 aborts.  ARMv5
          * defines these to be "precise" aborts.
          */
-        { do_bad,               SIGSEGV, "vector exception"                },
-        { do_bad,               SIGILL,  "alignment exception"             },
-        { do_bad,               SIGKILL, "terminal exception"              },
-        { do_bad,               SIGILL,  "alignment exception"             },
-        { do_bad,               SIGBUS,  "external abort on linefetch"     },
-        { do_translation_fault, SIGSEGV, "section translation fault"       },
-        { do_bad,               SIGBUS,  "external abort on linefetch"     },
-        { do_page_fault,        SIGSEGV, "page translation fault"          },
-        { do_bad,               SIGBUS,  "external abort on non-linefetch" },
-        { do_bad,               SIGSEGV, "section domain fault"            },
-        { do_bad,               SIGBUS,  "external abort on non-linefetch" },
-        { do_bad,               SIGSEGV, "page domain fault"               },
-        { do_bad,               SIGBUS,  "external abort on translation"   },
-        { do_sect_fault,        SIGSEGV, "section permission fault"        },
-        { do_bad,               SIGBUS,  "external abort on translation"   },
-        { do_page_fault,        SIGSEGV, "page permission fault"           },
+        { do_bad,               SIGSEGV, 0,             "vector exception"                 },
+        { do_bad,               SIGILL,  BUS_ADRALN,    "alignment exception"              },
+        { do_bad,               SIGKILL, 0,             "terminal exception"               },
+        { do_bad,               SIGILL,  BUS_ADRALN,    "alignment exception"              },
+        { do_bad,               SIGBUS,  0,             "external abort on linefetch"      },
+        { do_translation_fault, SIGSEGV, SEGV_MAPERR,   "section translation fault"        },
+        { do_bad,               SIGBUS,  0,             "external abort on linefetch"      },
+        { do_page_fault,        SIGSEGV, SEGV_MAPERR,   "page translation fault"           },
+        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section domain fault"             },
+        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page domain fault"                },
+        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
+        { do_sect_fault,        SIGSEGV, SEGV_ACCERR,   "section permission fault"         },
+        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
+        { do_page_fault,        SIGSEGV, SEGV_ACCERR,   "page permission fault"            },
         /*
          * The following are "imprecise" aborts, which are signalled by bit
          * 10 of the FSR, and may not be recoverable.  These are only
          * supported if the CPU abort handler supports bit 10.
          */
-        { do_bad,               SIGBUS,  "unknown 16"                      },
-        { do_bad,               SIGBUS,  "unknown 17"                      },
-        { do_bad,               SIGBUS,  "unknown 18"                      },
-        { do_bad,               SIGBUS,  "unknown 19"                      },
-        { do_bad,               SIGBUS,  "lock abort"                      }, /* xscale */
-        { do_bad,               SIGBUS,  "unknown 21"                      },
-        { do_bad,               SIGBUS,  "imprecise external abort"        }, /* xscale */
-        { do_bad,               SIGBUS,  "unknown 23"                      },
-        { do_bad,               SIGBUS,  "dcache parity error"             }, /* xscale */
-        { do_bad,               SIGBUS,  "unknown 25"                      },
-        { do_bad,               SIGBUS,  "unknown 26"                      },
-        { do_bad,               SIGBUS,  "unknown 27"                      },
-        { do_bad,               SIGBUS,  "unknown 28"                      },
-        { do_bad,               SIGBUS,  "unknown 29"                      },
-        { do_bad,               SIGBUS,  "unknown 30"                      },
-        { do_bad,               SIGBUS,  "unknown 31"                      }
+        { do_bad,               SIGBUS,  0,             "unknown 16"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 17"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 18"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 19"                       },
+        { do_bad,               SIGBUS,  0,             "lock abort"                       }, /* xscale */
+        { do_bad,               SIGBUS,  0,             "unknown 21"                       },
+        { do_bad,               SIGBUS,  BUS_OBJERR,    "imprecise external abort"         }, /* xscale */
+        { do_bad,               SIGBUS,  0,             "unknown 23"                       },
+        { do_bad,               SIGBUS,  0,             "dcache parity error"              }, /* xscale */
+        { do_bad,               SIGBUS,  0,             "unknown 25"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 26"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 27"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 28"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 29"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 30"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 31"                       }
 };
 
 void __init
@@ -435,15 +436,19 @@ asmlinkage void
 do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 {
         const struct fsr_info *inf = fsr_info + (fsr & 15) + ((fsr & (1 << 10)) >> 6);
+        struct siginfo info;
 
         if (!inf->fn(addr, fsr, regs))
                 return;
 
         printk(KERN_ALERT "Unhandled fault: %s (0x%03x) at 0x%08lx\n",
                 inf->name, fsr, addr);
-        force_sig(inf->sig, current);
-        show_pte(current->mm, addr);
-        die_if_kernel("Oops", regs, 0);
+
+        info.si_signo = inf->sig;
+        info.si_errno = 0;
+        info.si_code  = inf->code;
+        info.si_addr  = (void __user *)addr;
+        notify_die("", regs, &info, fsr, 0);
 }
 
 asmlinkage void
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index c08710b1ff02..edffa47a4b2a 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -437,7 +437,7 @@ void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
         memtable_init(mi);
         if (mdesc->map_io)
                 mdesc->map_io();
-        flush_tlb_all();
+        local_flush_tlb_all();
 
         /*
          * initialise the zones within each node
@@ -522,6 +522,69 @@ static inline void free_area(unsigned long addr, unsigned long end, char *s)
                 printk(KERN_INFO "Freeing %s memory: %dK\n", s, size);
 }
 
+static inline void
+free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
+{
+        struct page *start_pg, *end_pg;
+        unsigned long pg, pgend;
+
+        /*
+         * Convert start_pfn/end_pfn to a struct page pointer.
+         */
+        start_pg = pfn_to_page(start_pfn);
+        end_pg = pfn_to_page(end_pfn);
+
+        /*
+         * Convert to physical addresses, and
+         * round start upwards and end downwards.
+         */
+        pg = PAGE_ALIGN(__pa(start_pg));
+        pgend = __pa(end_pg) & PAGE_MASK;
+
+        /*
+         * If there are free pages between these,
+         * free the section of the memmap array.
+         */
+        if (pg < pgend)
+                free_bootmem_node(NODE_DATA(node), pg, pgend - pg);
+}
+
+/*
+ * The mem_map array can get very big.  Free the unused area of the memory map.
+ */
+static void __init free_unused_memmap_node(int node, struct meminfo *mi)
+{
+        unsigned long bank_start, prev_bank_end = 0;
+        unsigned int i;
+
+        /*
+         * [FIXME] This relies on each bank being in address order.  This
+         * may not be the case, especially if the user has provided the
+         * information on the command line.
+         */
+        for (i = 0; i < mi->nr_banks; i++) {
+                if (mi->bank[i].size == 0 || mi->bank[i].node != node)
+                        continue;
+
+                bank_start = mi->bank[i].start >> PAGE_SHIFT;
+                if (bank_start < prev_bank_end) {
+                        printk(KERN_ERR "MEM: unordered memory banks.  "
+                                "Not freeing memmap.\n");
+                        break;
+                }
+
+                /*
+                 * If we had a previous bank, and there is a space
+                 * between the current bank and the previous, free it.
+                 */
+                if (prev_bank_end && prev_bank_end != bank_start)
+                        free_memmap(node, prev_bank_end, bank_start);
+
+                prev_bank_end = (mi->bank[i].start +
+                                 mi->bank[i].size) >> PAGE_SHIFT;
+        }
+}
+
 /*
  * mem_init() marks the free areas in the mem_map and tells us how much
  * memory is free.  This is done after various parts of the system have
@@ -540,16 +603,12 @@ void __init mem_init(void)
         max_mapnr   = virt_to_page(high_memory) - mem_map;
 #endif
 
-        /*
-         * We may have non-contiguous memory.
-         */
-        if (meminfo.nr_banks != 1)
-                create_memmap_holes(&meminfo);
-
         /* this will put all unused low memory onto the freelists */
         for_each_online_node(node) {
                 pg_data_t *pgdat = NODE_DATA(node);
 
+                free_unused_memmap_node(node, &meminfo);
+
                 if (pgdat->node_spanned_pages != 0)
                         totalram_pages += free_all_bootmem_node(pgdat);
         }
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c
index 2c2b93d77d43..c3bd503b43a2 100644
--- a/arch/arm/mm/mm-armv.c
+++ b/arch/arm/mm/mm-armv.c
@@ -169,7 +169,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
 
         memzero(new_pgd, FIRST_KERNEL_PGD_NR * sizeof(pgd_t));
 
+        /*
+         * Copy over the kernel and IO PGD entries
+         */
         init_pgd = pgd_offset_k(0);
+        memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
+                       (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
+
+        clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
 
         if (!vectors_high()) {
                 /*
@@ -198,14 +205,6 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
                 spin_unlock(&mm->page_table_lock);
         }
 
-        /*
-         * Copy over the kernel and IO PGD entries
-         */
-        memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
-                       (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
-
-        clean_dcache_area(new_pgd, PTRS_PER_PGD * sizeof(pgd_t));
-
         return new_pgd;
 
 no_pte:
@@ -683,7 +682,7 @@ void __init memtable_init(struct meminfo *mi)
         }
 
         flush_cache_all();
-        flush_tlb_all();
+        local_flush_tlb_all();
 
         top_pmd = pmd_off_k(0xffff0000);
 }
@@ -698,75 +697,3 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
         for (i = 0; i < nr; i++)
                 create_mapping(io_desc + i);
 }
-
-static inline void
-free_memmap(int node, unsigned long start_pfn, unsigned long end_pfn)
-{
-        struct page *start_pg, *end_pg;
-        unsigned long pg, pgend;
-
-        /*
-         * Convert start_pfn/end_pfn to a struct page pointer.
-         */
-        start_pg = pfn_to_page(start_pfn);
-        end_pg = pfn_to_page(end_pfn);
-
-        /*
-         * Convert to physical addresses, and
-         * round start upwards and end downwards.
-         */
-        pg = PAGE_ALIGN(__pa(start_pg));
-        pgend = __pa(end_pg) & PAGE_MASK;
-
-        /*
-         * If there are free pages between these,
-         * free the section of the memmap array.
-         */
-        if (pg < pgend)
-                free_bootmem_node(NODE_DATA(node), pg, pgend - pg);
-}
-
-static inline void free_unused_memmap_node(int node, struct meminfo *mi)
-{
-        unsigned long bank_start, prev_bank_end = 0;
-        unsigned int i;
-
-        /*
-         * [FIXME] This relies on each bank being in address order.  This
-         * may not be the case, especially if the user has provided the
-         * information on the command line.
-         */
-        for (i = 0; i < mi->nr_banks; i++) {
-                if (mi->bank[i].size == 0 || mi->bank[i].node != node)
-                        continue;
-
-                bank_start = mi->bank[i].start >> PAGE_SHIFT;
-                if (bank_start < prev_bank_end) {
-                        printk(KERN_ERR "MEM: unordered memory banks.  "
-                                "Not freeing memmap.\n");
-                        break;
-                }
-
-                /*
-                 * If we had a previous bank, and there is a space
-                 * between the current bank and the previous, free it.
-                 */
-                if (prev_bank_end && prev_bank_end != bank_start)
-                        free_memmap(node, prev_bank_end, bank_start);
-
-                prev_bank_end = PAGE_ALIGN(mi->bank[i].start +
-                                           mi->bank[i].size) >> PAGE_SHIFT;
-        }
-}
-
-/*
- * The mem_map array can get very big.  Free
- * the unused area of the memory map.
- */
-void __init create_memmap_holes(struct meminfo *mi)
-{
-        int node;
-
-        for_each_online_node(node)
-                free_unused_memmap_node(node, mi);
-}
diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S
index 1f325231b9e4..5c0ae5260d1c 100644
--- a/arch/arm/mm/proc-arm1020.S
+++ b/arch/arm/mm/proc-arm1020.S
@@ -445,14 +445,14 @@ __arm1020_setup:
         /*
          *  R
          * .RVI ZFRS BLDP WCAM
-         * .0.1 1001 ..11 0101  /* FIXME: why no V bit? */
+         * .011 1001 ..11 0101
          */
         .type   arm1020_cr1_clear, #object
         .type   arm1020_cr1_set, #object
 arm1020_cr1_clear:
         .word   0x593f
 arm1020_cr1_set:
-        .word   0x1935
+        .word   0x3935
 
         __INITDATA
 
diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S
index 142a2c2d6f0b..d69389c4d4ba 100644
--- a/arch/arm/mm/proc-arm1020e.S
+++ b/arch/arm/mm/proc-arm1020e.S
@@ -427,14 +427,14 @@ __arm1020e_setup:
         /*
          *  R
          * .RVI ZFRS BLDP WCAM
-         * .0.1 1001 ..11 0101  /* FIXME: why no V bit? */
+         * .011 1001 ..11 0101
          */
         .type   arm1020e_cr1_clear, #object
         .type   arm1020e_cr1_set, #object
 arm1020e_cr1_clear:
         .word   0x5f3f
 arm1020e_cr1_set:
-        .word   0x1935
+        .word   0x3935
 
         __INITDATA