ARM: implement highpte

[pandora-kernel.git] / arch / arm / include / asm / pgalloc.h

diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index 3dcd64b..b12cc98 100644 (file)
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -36,6 +36,8 @@ extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd);
 #define pgd_alloc(mm)                  get_pgd_slow(mm)
 #define pgd_free(mm, pgd)              free_pgd_slow(mm, pgd)
 
+#define PGALLOC_GFP    (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+
 /*
  * Allocate one PTE table.
  *
@@ -57,7 +59,7 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
 {
        pte_t *pte;
 
-       pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+       pte = (pte_t *)__get_free_page(PGALLOC_GFP);
        if (pte) {
                clean_dcache_area(pte, sizeof(pte_t) * PTRS_PER_PTE);
                pte += PTRS_PER_PTE;
@@ -71,10 +73,16 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
        struct page *pte;
 
-       pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
+#ifdef CONFIG_HIGHPTE
+       pte = alloc_pages(PGALLOC_GFP | __GFP_HIGHMEM, 0);
+#else
+       pte = alloc_pages(PGALLOC_GFP, 0);
+#endif
        if (pte) {
-               void *page = page_address(pte);
-               clean_dcache_area(page, sizeof(pte_t) * PTRS_PER_PTE);
+               if (!PageHighMem(pte)) {
+                       void *page = page_address(pte);
+                       clean_dcache_area(page, sizeof(pte_t) * PTRS_PER_PTE);
+               }
                pgtable_page_ctor(pte);
        }