diff options
| author | David S. Miller <davem@davemloft.net> | 2010-04-21 00:50:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-21 00:50:39 -0700 |
| commit | e04997b13a2c2fc93af970fe95fd29a74db113e8 (patch) | |
| tree | a84ec3368edc3c2568a0d6acdfa0d0e50d8cacf7 /arch/arm/mm/mmu.c | |
| parent | 6651ffc8e8bdd5fb4b7d1867c6cfebb4f309512c (diff) | |
| parent | 05ce7bfe547c9fa967d9cab6c37867a9cb6fb3fa (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 9d4da6ac28e..241c24a1c18 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -420,6 +420,10 @@ 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 @@ -1050,10 +1054,12 @@ 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()) |