1 files changed, 12 insertions, 1 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 8ea27ca4b700..d1a979eab656 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -80,6 +80,7 @@ void show_mem(void)
 static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
 {
         pgd_t *pgd;
+        pud_t *pud;
         pmd_t *pmd;
         pte_t *pte;
 
@@ -89,7 +90,17 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
                 return;
         }
 
-        pmd = pmd_offset(pgd, addr);
+        pud = pud_offset(pgd, addr);
+        if (pud_none(*pud)) {
+                pmd = (pmd_t *)get_zeroed_page(GFP_ATOMIC);
+                set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | _PAGE_USER));
+                if (pmd != pmd_offset(pud, 0)) {
+                        pud_ERROR(*pud);
+                        return;
+                }
+        }
+
+        pmd = pmd_offset(pud, addr);
         if (pmd_none(*pmd)) {
                 pte = (pte_t *)get_zeroed_page(GFP_ATOMIC);
                 set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE | _PAGE_USER));