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git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/blob - arch/x86/include/asm/pgtable_64_types.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_PGTABLE_64_DEFS_H
3 #define _ASM_X86_PGTABLE_64_DEFS_H
5 #include <asm/sparsemem.h>
8 #include <linux/types.h>
12 * These are used to make use of C type-checking..
14 typedef unsigned long pteval_t
;
15 typedef unsigned long pmdval_t
;
16 typedef unsigned long pudval_t
;
17 typedef unsigned long p4dval_t
;
18 typedef unsigned long pgdval_t
;
19 typedef unsigned long pgprotval_t
;
21 typedef struct { pteval_t pte
; } pte_t
;
23 #endif /* !__ASSEMBLY__ */
25 #define SHARED_KERNEL_PMD 0
27 #ifdef CONFIG_X86_5LEVEL
30 * PGDIR_SHIFT determines what a top-level page table entry can map
32 #define PGDIR_SHIFT 48
33 #define PTRS_PER_PGD 512
36 * 4th level page in 5-level paging case
39 #define PTRS_PER_P4D 512
40 #define P4D_SIZE (_AC(1, UL) << P4D_SHIFT)
41 #define P4D_MASK (~(P4D_SIZE - 1))
43 #else /* CONFIG_X86_5LEVEL */
46 * PGDIR_SHIFT determines what a top-level page table entry can map
48 #define PGDIR_SHIFT 39
49 #define PTRS_PER_PGD 512
51 #endif /* CONFIG_X86_5LEVEL */
57 #define PTRS_PER_PUD 512
60 * PMD_SHIFT determines the size of the area a middle-level
64 #define PTRS_PER_PMD 512
67 * entries per page directory level
69 #define PTRS_PER_PTE 512
71 #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
72 #define PMD_MASK (~(PMD_SIZE - 1))
73 #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
74 #define PUD_MASK (~(PUD_SIZE - 1))
75 #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
76 #define PGDIR_MASK (~(PGDIR_SIZE - 1))
78 /* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */
79 #define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL)
80 #ifdef CONFIG_X86_5LEVEL
81 #define VMALLOC_SIZE_TB _AC(16384, UL)
82 #define __VMALLOC_BASE _AC(0xff92000000000000, UL)
83 #define __VMEMMAP_BASE _AC(0xffd4000000000000, UL)
85 #define VMALLOC_SIZE_TB _AC(32, UL)
86 #define __VMALLOC_BASE _AC(0xffffc90000000000, UL)
87 #define __VMEMMAP_BASE _AC(0xffffea0000000000, UL)
89 #ifdef CONFIG_RANDOMIZE_MEMORY
90 #define VMALLOC_START vmalloc_base
91 #define VMEMMAP_START vmemmap_base
93 #define VMALLOC_START __VMALLOC_BASE
94 #define VMEMMAP_START __VMEMMAP_BASE
95 #endif /* CONFIG_RANDOMIZE_MEMORY */
96 #define VMALLOC_END (VMALLOC_START + _AC((VMALLOC_SIZE_TB << 40) - 1, UL))
97 #define MODULES_VADDR (__START_KERNEL_map + KERNEL_IMAGE_SIZE)
98 /* The module sections ends with the start of the fixmap */
99 #define MODULES_END __fix_to_virt(__end_of_fixed_addresses + 1)
100 #define MODULES_LEN (MODULES_END - MODULES_VADDR)
101 #define ESPFIX_PGD_ENTRY _AC(-2, UL)
102 #define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << P4D_SHIFT)
103 #define EFI_VA_START ( -4 * (_AC(1, UL) << 30))
104 #define EFI_VA_END (-68 * (_AC(1, UL) << 30))
106 #define EARLY_DYNAMIC_PAGE_TABLES 64
108 #endif /* _ASM_X86_PGTABLE_64_DEFS_H */