sh: pmd rework.

[linux-2.6-omap-h63xx.git] / include / asm-sh / pgalloc.h

diff --git a/include/asm-sh/pgalloc.h b/include/asm-sh/pgalloc.h
index e841465ab4d24214955704852dde0b99a3da35e8..888e4529e6fe3c4bb2108f134b8b7674435836c3 100644 (file)
--- a/include/asm-sh/pgalloc.h
+++ b/include/asm-sh/pgalloc.h
@@ -1,13 +1,16 @@
 #ifndef __ASM_SH_PGALLOC_H
 #define __ASM_SH_PGALLOC_H
 
-#define pmd_populate_kernel(mm, pmd, pte) \
-               set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+                                      pte_t *pte)
+{
+       set_pmd(pmd, __pmd((unsigned long)pte));
+}
 
 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
                                struct page *pte)
 {
-       set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
+       set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
 }
 
 /*
@@ -15,7 +18,16 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  */
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-       return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
+       pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT);
+
+       if (pgd) {
+               memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
+               memcpy(pgd + USER_PTRS_PER_PGD,
+                      swapper_pg_dir + USER_PTRS_PER_PGD,
+                      (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+       }
+
+       return pgd;
 }
 
 static inline void pgd_free(pgd_t *pgd)