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fb355149 JF |
1 | #ifndef _ASM_X86_PGTABLE_64_DEFS_H |
2 | #define _ASM_X86_PGTABLE_64_DEFS_H | |
3 | ||
54321d94 JF |
4 | #ifndef __ASSEMBLY__ |
5 | #include <linux/types.h> | |
6 | ||
7 | /* | |
8 | * These are used to make use of C type-checking.. | |
9 | */ | |
10 | typedef unsigned long pteval_t; | |
11 | typedef unsigned long pmdval_t; | |
12 | typedef unsigned long pudval_t; | |
13 | typedef unsigned long pgdval_t; | |
14 | typedef unsigned long pgprotval_t; | |
15 | ||
16 | typedef struct { pteval_t pte; } pte_t; | |
17 | ||
18 | #endif /* !__ASSEMBLY__ */ | |
19 | ||
fb355149 | 20 | #define SHARED_KERNEL_PMD 0 |
9b3651cb | 21 | #define PAGETABLE_LEVELS 4 |
fb355149 JF |
22 | |
23 | /* | |
24 | * PGDIR_SHIFT determines what a top-level page table entry can map | |
25 | */ | |
26 | #define PGDIR_SHIFT 39 | |
27 | #define PTRS_PER_PGD 512 | |
28 | ||
29 | /* | |
30 | * 3rd level page | |
31 | */ | |
32 | #define PUD_SHIFT 30 | |
33 | #define PTRS_PER_PUD 512 | |
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 | ||
47 | #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) | |
48 | #define PMD_MASK (~(PMD_SIZE - 1)) | |
49 | #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) | |
50 | #define PUD_MASK (~(PUD_SIZE - 1)) | |
51 | #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) | |
52 | #define PGDIR_MASK (~(PGDIR_SIZE - 1)) | |
53 | ||
c898faf9 | 54 | /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ |
fb355149 | 55 | #define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL) |
c898faf9 RR |
56 | #define VMALLOC_START _AC(0xffffc90000000000, UL) |
57 | #define VMALLOC_END _AC(0xffffe8ffffffffff, UL) | |
58 | #define VMEMMAP_START _AC(0xffffea0000000000, UL) | |
fb355149 JF |
59 | #define MODULES_VADDR _AC(0xffffffffa0000000, UL) |
60 | #define MODULES_END _AC(0xffffffffff000000, UL) | |
61 | #define MODULES_LEN (MODULES_END - MODULES_VADDR) | |
62 | ||
63 | #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ |