projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| df4e817b PT |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Copyright (c) 2021, Google LLC. | |
| 5 | * Pasha Tatashin <pasha.tatashin@soleen.com> | |
| 6 | */ | |
| 7 | #ifndef __LINUX_PAGE_TABLE_CHECK_H | |
| 8 | #define __LINUX_PAGE_TABLE_CHECK_H | |
| 9 | ||
| 10 | #ifdef CONFIG_PAGE_TABLE_CHECK | |
| 11 | #include <linux/jump_label.h> | |
| 12 | ||
| 13 | extern struct static_key_true page_table_check_disabled; | |
| 14 | extern struct page_ext_operations page_table_check_ops; | |
| 15 | ||
| 16 | void __page_table_check_zero(struct page *page, unsigned int order); | |
| aa232204 | 17 | void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte); |
| 1831414c | 18 | void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd); |
| df4e817b PT |
19 | void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr, |
| 20 | pud_t pud); | |
| 21 | void __page_table_check_pte_set(struct mm_struct *mm, unsigned long addr, | |
| 22 | pte_t *ptep, pte_t pte); | |
| 23 | void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr, | |
| 24 | pmd_t *pmdp, pmd_t pmd); | |
| 25 | void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr, | |
| 26 | pud_t *pudp, pud_t pud); | |
| 80110bbf PT |
27 | void __page_table_check_pte_clear_range(struct mm_struct *mm, |
| 28 | unsigned long addr, | |
| 29 | pmd_t pmd); | |
| df4e817b PT |
30 | |
| 31 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 32 | { | |
| 33 | if (static_branch_likely(&page_table_check_disabled)) | |
| 34 | return; | |
| 35 | ||
| 36 | __page_table_check_zero(page, order); | |
| 37 | } | |
| 38 | ||
| 39 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 40 | { | |
| 41 | if (static_branch_likely(&page_table_check_disabled)) | |
| 42 | return; | |
| 43 | ||
| 44 | __page_table_check_zero(page, order); | |
| 45 | } | |
| 46 | ||
| aa232204 | 47 | static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte) |
| df4e817b PT |
48 | { |
| 49 | if (static_branch_likely(&page_table_check_disabled)) | |
| 50 | return; | |
| 51 | ||
| aa232204 | 52 | __page_table_check_pte_clear(mm, pte); |
| df4e817b PT |
53 | } |
| 54 | ||
| 1831414c | 55 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) |
| df4e817b PT |
56 | { |
| 57 | if (static_branch_likely(&page_table_check_disabled)) | |
| 58 | return; | |
| 59 | ||
| 1831414c | 60 | __page_table_check_pmd_clear(mm, pmd); |
| df4e817b PT |
61 | } |
| 62 | ||
| 63 | static inline void page_table_check_pud_clear(struct mm_struct *mm, | |
| 64 | unsigned long addr, pud_t pud) | |
| 65 | { | |
| 66 | if (static_branch_likely(&page_table_check_disabled)) | |
| 67 | return; | |
| 68 | ||
| 69 | __page_table_check_pud_clear(mm, addr, pud); | |
| 70 | } | |
| 71 | ||
| 72 | static inline void page_table_check_pte_set(struct mm_struct *mm, | |
| 73 | unsigned long addr, pte_t *ptep, | |
| 74 | pte_t pte) | |
| 75 | { | |
| 76 | if (static_branch_likely(&page_table_check_disabled)) | |
| 77 | return; | |
| 78 | ||
| 79 | __page_table_check_pte_set(mm, addr, ptep, pte); | |
| 80 | } | |
| 81 | ||
| 82 | static inline void page_table_check_pmd_set(struct mm_struct *mm, | |
| 83 | unsigned long addr, pmd_t *pmdp, | |
| 84 | pmd_t pmd) | |
| 85 | { | |
| 86 | if (static_branch_likely(&page_table_check_disabled)) | |
| 87 | return; | |
| 88 | ||
| 89 | __page_table_check_pmd_set(mm, addr, pmdp, pmd); | |
| 90 | } | |
| 91 | ||
| 92 | static inline void page_table_check_pud_set(struct mm_struct *mm, | |
| 93 | unsigned long addr, pud_t *pudp, | |
| 94 | pud_t pud) | |
| 95 | { | |
| 96 | if (static_branch_likely(&page_table_check_disabled)) | |
| 97 | return; | |
| 98 | ||
| 99 | __page_table_check_pud_set(mm, addr, pudp, pud); | |
| 100 | } | |
| 101 | ||
| 80110bbf PT |
102 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 103 | unsigned long addr, | |
| 104 | pmd_t pmd) | |
| 105 | { | |
| 106 | if (static_branch_likely(&page_table_check_disabled)) | |
| 107 | return; | |
| 108 | ||
| 109 | __page_table_check_pte_clear_range(mm, addr, pmd); | |
| 110 | } | |
| 111 | ||
| df4e817b PT |
112 | #else |
| 113 | ||
| 114 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 115 | { | |
| 116 | } | |
| 117 | ||
| 118 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 119 | { | |
| 120 | } | |
| 121 | ||
| aa232204 | 122 | static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte) |
| df4e817b PT |
123 | { |
| 124 | } | |
| 125 | ||
| 1831414c | 126 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) |
| df4e817b PT |
127 | { |
| 128 | } | |
| 129 | ||
| 130 | static inline void page_table_check_pud_clear(struct mm_struct *mm, | |
| 131 | unsigned long addr, pud_t pud) | |
| 132 | { | |
| 133 | } | |
| 134 | ||
| 135 | static inline void page_table_check_pte_set(struct mm_struct *mm, | |
| 136 | unsigned long addr, pte_t *ptep, | |
| 137 | pte_t pte) | |
| 138 | { | |
| 139 | } | |
| 140 | ||
| 141 | static inline void page_table_check_pmd_set(struct mm_struct *mm, | |
| 142 | unsigned long addr, pmd_t *pmdp, | |
| 143 | pmd_t pmd) | |
| 144 | { | |
| 145 | } | |
| 146 | ||
| 147 | static inline void page_table_check_pud_set(struct mm_struct *mm, | |
| 148 | unsigned long addr, pud_t *pudp, | |
| 149 | pud_t pud) | |
| 150 | { | |
| 151 | } | |
| 152 | ||
| 80110bbf PT |
153 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 154 | unsigned long addr, | |
| 155 | pmd_t pmd) | |
| 156 | { | |
| 157 | } | |
| 158 | ||
| df4e817b PT |
159 | #endif /* CONFIG_PAGE_TABLE_CHECK */ |
| 160 | #endif /* __LINUX_PAGE_TABLE_CHECK_H */ |