Merge branch 'devel-stable' into devel

[karo-tx-linux.git] / arch / arm / mm / mmu.c

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 69852003675f4963a0d830cd93ac263c5f592bc7..e7113d0b816863e498c57fa5536e38c3189f1967 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -421,6 +421,10 @@ static void __init build_mem_type_table(void)
                user_pgprot |= L_PTE_SHARED;
                kern_pgprot |= L_PTE_SHARED;
                vecs_pgprot |= L_PTE_SHARED;
+               mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_S;
+               mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
+               mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
+               mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED;
                mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
                mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_S;
 #endif
@@ -1087,10 +1091,12 @@ void setup_mm_for_reboot(char mode)
        pgd_t *pgd;
        int i;
 
-       if (current->mm && current->mm->pgd)
-               pgd = current->mm->pgd;
-       else
-               pgd = init_mm.pgd;
+       /*
+        * We need to access to user-mode page tables here. For kernel threads
+        * we don't have any user-mode mappings so we use the context that we
+        * "borrowed".
+        */
+       pgd = current->active_mm->pgd;
 
        base_pmdval = PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | PMD_TYPE_SECT;
        if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale())