X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-arm%2Fpgalloc.h;h=4d43945529118a8ea7e92241771a6f3253a1e93a;hb=refs%2Fheads%2Fvserver;hp=23eb321f4af2e65754f58e5b3daa7d1613e0bff1;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/asm-arm/pgalloc.h b/include/asm-arm/pgalloc.h
index 23eb321f4..4d4394552 100644
--- a/include/asm-arm/pgalloc.h
+++ b/include/asm-arm/pgalloc.h
@@ -10,10 +10,19 @@
 #ifndef _ASMARM_PGALLOC_H
 #define _ASMARM_PGALLOC_H
 
+#include <asm/domain.h>
+#include <asm/pgtable-hwdef.h>
 #include <asm/processor.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
 
+#define check_pgt_cache()		do { } while (0)
+
+#ifdef CONFIG_MMU
+
+#define _PAGE_USER_TABLE	(PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_USER))
+#define _PAGE_KERNEL_TABLE	(PMD_TYPE_TABLE | PMD_BIT4 | PMD_DOMAIN(DOMAIN_KERNEL))
+
 /*
  * Since we have only two-level page tables, these are trivial
  */
@@ -27,8 +36,6 @@ extern void free_pgd_slow(pgd_t *pgd);
 #define pgd_alloc(mm)			get_pgd_slow(mm)
 #define pgd_free(pgd)			free_pgd_slow(pgd)
 
-#define check_pgt_cache()		do { } while (0)
-
 /*
  * Allocate one PTE table.
  *
@@ -50,9 +57,8 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
 {
 	pte_t *pte;
 
-	pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT);
+	pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
 	if (pte) {
-		clear_page(pte);
 		clean_dcache_area(pte, sizeof(pte_t) * PTRS_PER_PTE);
 		pte += PTRS_PER_PTE;
 	}
@@ -65,10 +71,9 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	struct page *pte;
 
-	pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
+	pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
 	if (pte) {
 		void *page = page_address(pte);
-		clear_page(page);
 		clean_dcache_area(page, sizeof(pte_t) * PTRS_PER_PTE);
 	}
 
@@ -91,6 +96,13 @@ static inline void pte_free(struct page *pte)
 	__free_page(pte);
 }
 
+static inline void __pmd_populate(pmd_t *pmdp, unsigned long pmdval)
+{
+	pmdp[0] = __pmd(pmdval);
+	pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
+	flush_pmd_entry(pmdp);
+}
+
 /*
  * Populate the pmdp entry with a pointer to the pte.  This pmd is part
  * of the mm address space.
@@ -101,32 +113,21 @@ static inline void
 pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
 {
 	unsigned long pte_ptr = (unsigned long)ptep;
-	unsigned long pmdval;
-
-	BUG_ON(mm != &init_mm);
 
 	/*
 	 * The pmd must be loaded with the physical
 	 * address of the PTE table
 	 */
 	pte_ptr -= PTRS_PER_PTE * sizeof(void *);
-	pmdval = __pa(pte_ptr) | _PAGE_KERNEL_TABLE;
-	pmdp[0] = __pmd(pmdval);
-	pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
-	flush_pmd_entry(pmdp);
+	__pmd_populate(pmdp, __pa(pte_ptr) | _PAGE_KERNEL_TABLE);
 }
 
 static inline void
 pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep)
 {
-	unsigned long pmdval;
-
-	BUG_ON(mm == &init_mm);
-
-	pmdval = page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE;
-	pmdp[0] = __pmd(pmdval);
-	pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
-	flush_pmd_entry(pmdp);
+	__pmd_populate(pmdp, page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE);
 }
 
+#endif /* CONFIG_MMU */
+
 #endif