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1da177e4 LT |
1 | #ifndef _I386_PGTABLE_3LEVEL_DEFS_H |
2 | #define _I386_PGTABLE_3LEVEL_DEFS_H | |
3 | ||
4 | /* | |
5 | * PGDIR_SHIFT determines what a top-level page table entry can map | |
6 | */ | |
7 | #define PGDIR_SHIFT 30 | |
8 | #define PTRS_PER_PGD 4 | |
9 | ||
10 | /* | |
11 | * PMD_SHIFT determines the size of the area a middle-level | |
12 | * page table can map | |
13 | */ | |
14 | #define PMD_SHIFT 21 | |
15 | #define PTRS_PER_PMD 512 | |
16 | ||
17 | /* | |
18 | * entries per page directory level | |
19 | */ | |
20 | #define PTRS_PER_PTE 512 | |
21 | ||
22 | #endif /* _I386_PGTABLE_3LEVEL_DEFS_H */ |