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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>
This commit is contained in:
Andi Kleen 2008-02-04 16:48:09 +01:00 committed by Ingo Molnar
parent fbff3c21af
commit 61e19a347a
2 changed files with 8 additions and 0 deletions
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2
include/asm-x86/pgtable_32.h
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@ -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]
*

6
include/asm-x86/pgtable_64.h
View File

@ -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))