1 #ifndef _ASM_X86_PGTABLE_64_DEFS_H 2 #define _ASM_X86_PGTABLE_64_DEFS_H 3 4 #include <asm/sparsemem.h> 5 6 #ifndef __ASSEMBLY__ 7 #include <linux/types.h> 8 #include <asm/kaslr.h> 9 10 /* 11 * These are used to make use of C type-checking.. 12 */ 13 typedef unsigned long pteval_t; 14 typedef unsigned long pmdval_t; 15 typedef unsigned long pudval_t; 16 typedef unsigned long pgdval_t; 17 typedef unsigned long pgprotval_t; 18 19 typedef struct { pteval_t pte; } pte_t; 20 21 #endif /* !__ASSEMBLY__ */ 22 23 #define SHARED_KERNEL_PMD 0 24 25 /* 26 * PGDIR_SHIFT determines what a top-level page table entry can map 27 */ 28 #define PGDIR_SHIFT 39 29 #define PTRS_PER_PGD 512 30 31 /* 32 * 3rd level page 33 */ 34 #define PUD_SHIFT 30 35 #define PTRS_PER_PUD 512 36 37 /* 38 * PMD_SHIFT determines the size of the area a middle-level 39 * page table can map 40 */ 41 #define PMD_SHIFT 21 42 #define PTRS_PER_PMD 512 43 44 /* 45 * entries per page directory level 46 */ 47 #define PTRS_PER_PTE 512 48 49 #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) 50 #define PMD_MASK (~(PMD_SIZE - 1)) 51 #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) 52 #define PUD_MASK (~(PUD_SIZE - 1)) 53 #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) 54 #define PGDIR_MASK (~(PGDIR_SIZE - 1)) 55 56 /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */ 57 #define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL) 58 #define VMALLOC_SIZE_TB _AC(32, UL) 59 #define __VMALLOC_BASE _AC(0xffffc90000000000, UL) 60 #define __VMEMMAP_BASE _AC(0xffffea0000000000, UL) 61 #ifdef CONFIG_RANDOMIZE_MEMORY 62 #define VMALLOC_START vmalloc_base 63 #define VMEMMAP_START vmemmap_base 64 #else 65 #define VMALLOC_START __VMALLOC_BASE 66 #define VMEMMAP_START __VMEMMAP_BASE 67 #endif /* CONFIG_RANDOMIZE_MEMORY */ 68 #define VMALLOC_END (VMALLOC_START + _AC((VMALLOC_SIZE_TB << 40) - 1, UL)) 69 #define MODULES_VADDR (__START_KERNEL_map + KERNEL_IMAGE_SIZE) 70 #define MODULES_END _AC(0xffffffffff000000, UL) 71 #define MODULES_LEN (MODULES_END - MODULES_VADDR) 72 #define ESPFIX_PGD_ENTRY _AC(-2, UL) 73 #define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT) 74 #define EFI_VA_START ( -4 * (_AC(1, UL) << 30)) 75 #define EFI_VA_END (-68 * (_AC(1, UL) << 30)) 76 77 #define EARLY_DYNAMIC_PAGE_TABLES 64 78 79 #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ 80