summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/pgtable-3level-defs.h
blob: c05fe6ff37202ddd51c596b9c27e1b609f84fb3a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
#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 */