1 files changed, 27 insertions, 1 deletions

diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index 660f1bc68f99..feacf4c76712 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -8,6 +8,31 @@
 
 pgd_t *idmap_pgd;
 
+#ifdef CONFIG_ARM_LPAE
+static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,
+        unsigned long prot)
+{
+        pmd_t *pmd;
+        unsigned long next;
+
+        if (pud_none_or_clear_bad(pud) || (pud_val(*pud) & L_PGD_SWAPPER)) {
+                pmd = pmd_alloc_one(&init_mm, addr);
+                if (!pmd) {
+                        pr_warning("Failed to allocate identity pmd.\n");
+                        return;
+                }
+                pud_populate(&init_mm, pud, pmd);
+                pmd += pmd_index(addr);
+        } else
+                pmd = pmd_offset(pud, addr);
+
+        do {
+                next = pmd_addr_end(addr, end);
+                *pmd = __pmd((addr & PMD_MASK) | prot);
+                flush_pmd_entry(pmd);
+        } while (pmd++, addr = next, addr != end);
+}
+#else   /* !CONFIG_ARM_LPAE */
 static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,
         unsigned long prot)
 {
@@ -19,6 +44,7 @@ static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end,
         pmd[1] = __pmd(addr);
         flush_pmd_entry(pmd);
 }
+#endif  /* CONFIG_ARM_LPAE */
 
 static void idmap_add_pud(pgd_t *pgd, unsigned long addr, unsigned long end,
         unsigned long prot)
@@ -36,7 +62,7 @@ static void identity_mapping_add(pgd_t *pgd, unsigned long addr, unsigned long e
 {
         unsigned long prot, next;
 
-        prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE;
+        prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AF;
         if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale())
                 prot |= PMD_BIT4;