x86: add pgtable accessor functions for gbpages

Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
git-mirror · Feb 4, 2008 · 61e19a3 · 61e19a3
1 parent fbff3c2
commit 61e19a3
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diff --git a/include/asm-x86/pgtable_32.h b/include/asm-x86/pgtable_32.h
@@ -148,6 +148,8 @@ static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
  */
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 
+static inline int pud_large(pud_t pud) { return 0; }
+
 /*
  * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
  *

diff --git 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))
-Original file line number
+Diff line change
@@ Expand Up @@
      */
     #define pgd_offset_k(address) pgd_offset(&init_mm, address)
+    static inline int pud_large(pud_t pud) { return 0; }
     /*
      * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD]
      *
@@ Expand Down @@