x86: add pgtable accessor functions for gbpages

[linux-2.6-microblaze.git] / include / asm-x86 / pgtable_64.h

diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h
index 5c86cff..bd4740a 100644 (file)
--- a/include/asm-x86/pgtable_64.h
+++ b/include/asm-x86/pgtable_64.h
@@ -198,6 +198,12 @@ static inline unsigned long pmd_bad(pmd_t pmd)
 #define pud_offset(pgd, address) ((pud_t *) pgd_page_vaddr(*(pgd)) + pud_index(address))
 #define pud_present(pud) (pud_val(pud) & _PAGE_PRESENT)
 
+static inline int pud_large(pud_t pte)
+{
+       return (pud_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
+               (_PAGE_PSE|_PAGE_PRESENT);
+}
+
 /* PMD  - Level 2 access */
 #define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PTE_MASK))
 #define pmd_page(pmd)          (pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))