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1965aae3 PA |
1 | #ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H |
2 | #define _ASM_X86_PGTABLE_3LEVEL_DEFS_H | |
1da177e4 | 3 | |
54321d94 JF |
4 | #ifndef __ASSEMBLY__ |
5 | #include <linux/types.h> | |
6 | ||
7 | typedef u64 pteval_t; | |
8 | typedef u64 pmdval_t; | |
9 | typedef u64 pudval_t; | |
10 | typedef u64 pgdval_t; | |
11 | typedef u64 pgprotval_t; | |
12 | ||
13 | typedef union { | |
14 | struct { | |
15 | unsigned long pte_low, pte_high; | |
16 | }; | |
17 | pteval_t pte; | |
18 | } pte_t; | |
19 | #endif /* !__ASSEMBLY__ */ | |
20 | ||
5311ab62 | 21 | #ifdef CONFIG_PARAVIRT |
93b1eab3 | 22 | #define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd) |
5311ab62 JF |
23 | #else |
24 | #define SHARED_KERNEL_PMD 1 | |
25 | #endif | |
26 | ||
9b3651cb JF |
27 | #define PAGETABLE_LEVELS 3 |
28 | ||
1da177e4 LT |
29 | /* |
30 | * PGDIR_SHIFT determines what a top-level page table entry can map | |
31 | */ | |
32 | #define PGDIR_SHIFT 30 | |
33 | #define PTRS_PER_PGD 4 | |
34 | ||
35 | /* | |
36 | * PMD_SHIFT determines the size of the area a middle-level | |
37 | * page table can map | |
38 | */ | |
39 | #define PMD_SHIFT 21 | |
40 | #define PTRS_PER_PMD 512 | |
41 | ||
42 | /* | |
43 | * entries per page directory level | |
44 | */ | |
45 | #define PTRS_PER_PTE 512 | |
46 | ||
54321d94 | 47 | |
1965aae3 | 48 | #endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */ |