[deliverable/linux.git] / arch / x86 / include / asm / pgtable-3level-defs.h

#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H

#ifdef CONFIG_PARAVIRT
#define SHARED_KERNEL_PMD	(pv_info.shared_kernel_pmd)
#else
#define SHARED_KERNEL_PMD	1
#endif

/*
 * PGDIR_SHIFT determines what a top-level page table entry can map
 */
#define PGDIR_SHIFT	30
#define PTRS_PER_PGD	4

/*
 * PMD_SHIFT determines the size of the area a middle-level
 * page table can map
 */
#define PMD_SHIFT	21
#define PTRS_PER_PMD	512

/*
 * entries per page directory level
 */
#define PTRS_PER_PTE	512

#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
1965aae3 PA	2	#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H
1da177e4	3
5311ab62	4	#ifdef CONFIG_PARAVIRT
93b1eab3	5	#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd)
5311ab62 JF	6	#else
	7	#define SHARED_KERNEL_PMD 1
	8	#endif
	9
1da177e4 LT	10	/*
	11	* PGDIR_SHIFT determines what a top-level page table entry can map
	12	*/
	13	#define PGDIR_SHIFT 30
	14	#define PTRS_PER_PGD 4
	15
	16	/*
	17	* PMD_SHIFT determines the size of the area a middle-level
	18	* page table can map
	19	*/
	20	#define PMD_SHIFT 21
	21	#define PTRS_PER_PMD 512
	22
	23	/*
	24	* entries per page directory level
	25	*/
	26	#define PTRS_PER_PTE 512
	27
1965aae3	28	#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */