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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _I386_PGTABLE_3LEVEL_DEFS_H
2#define _I386_PGTABLE_3LEVEL_DEFS_H
3
Jeremy Fitzhardinge5311ab62007-05-02 19:27:13 +02004#ifdef CONFIG_PARAVIRT
Jeremy Fitzhardinge93b1eab2007-10-16 11:51:29 -07005#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd)
Jeremy Fitzhardinge5311ab62007-05-02 19:27:13 +02006#else
7#define SHARED_KERNEL_PMD 1
8#endif
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010/*
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
28#endif /* _I386_PGTABLE_3LEVEL_DEFS_H */