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-rw-r--r--arch/arm/mm/mmu.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 69a337df619f..ec8d0008bfa1 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1646,3 +1646,17 @@ void __init early_mm_init(const struct machine_desc *mdesc)
build_mem_type_table();
early_paging_init(mdesc);
}
+
+void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pteval)
+{
+ unsigned long ext = 0;
+
+ if (addr < TASK_SIZE && pte_valid_user(pteval)) {
+ if (!pte_special(pteval))
+ __sync_icache_dcache(pteval);
+ ext |= PTE_EXT_NG;
+ }
+
+ set_pte_ext(ptep, pteval, ext);
+}