diff options
| -rw-r--r-- | arch/arm/mm/idmap.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index cda5ea3157a7..b01760e6da18 100644 --- a/arch/arm/mm/idmap.c +++ b/arch/arm/mm/idmap.c @@ -100,17 +100,18 @@ static int __init init_static_idmap(void) arch_initcall(init_static_idmap); /* - * In order to soft-boot, we need to insert a 1:1 mapping in place of - * the user-mode pages. This will then ensure that we have predictable - * results when turning the mmu off + * In order to soft-boot, we need to switch to a 1:1 mapping for the + * cpu_reset functions. This will then ensure that we have predictable + * results when turning off the mmu. */ void setup_mm_for_reboot(void) { - /* - * 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". - */ - identity_mapping_add(current->active_mm->pgd, 0, TASK_SIZE); + /* Clean and invalidate L1. */ + flush_cache_all(); + + /* Switch to the identity mapping. */ + cpu_switch_mm(idmap_pgd, &init_mm); + + /* Flush the TLB. */ local_flush_tlb_all(); } |