projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |