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Commit 61e19a34 authored by Andi Kleen's avatar Andi Kleen Committed by Ingo Molnar
Browse files

x86: add pgtable accessor functions for gbpages 



Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent fbff3c21

include/asm-x86/pgtable_32.h

+2 −0
Original line number Diff line number Diff line
@@ -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]

 *

include/asm-x86/pgtable_64.h

+6 −0
Original line number Diff line number Diff line
@@ -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))