1 #ifndef _ASM_X86_PGTABLE_64_DEFS_H
2 #define _ASM_X86_PGTABLE_64_DEFS_H
5 #include <linux/types.h>
8 * These are used to make use of C type-checking..
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;
16 typedef struct { pteval_t pte; } pte_t;
18 #endif /* !__ASSEMBLY__ */
20 #define SHARED_KERNEL_PMD 0
23 * PGDIR_SHIFT determines what a top-level page table entry can map
25 #define PGDIR_SHIFT 39
26 #define PTRS_PER_PGD 512
32 #define PTRS_PER_PUD 512
35 * PMD_SHIFT determines the size of the area a middle-level
39 #define PTRS_PER_PMD 512
42 * entries per page directory level
44 #define PTRS_PER_PTE 512
46 #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
47 #define PMD_MASK (~(PMD_SIZE - 1))
48 #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
49 #define PUD_MASK (~(PUD_SIZE - 1))
50 #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
51 #define PGDIR_MASK (~(PGDIR_SIZE - 1))
54 #define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL)
55 #define VMALLOC_START _AC(0xffffc20000000000, UL)
56 #define VMALLOC_END _AC(0xffffe1ffffffffff, UL)
57 #define VMEMMAP_START _AC(0xffffe20000000000, UL)
58 #define MODULES_VADDR _AC(0xffffffffa0000000, UL)
59 #define MODULES_END _AC(0xffffffffff000000, UL)
60 #define MODULES_LEN (MODULES_END - MODULES_VADDR)
62 #endif /* _ASM_X86_PGTABLE_64_DEFS_H */