1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_GENERIC_HUGETLB_H
3 #define _ASM_GENERIC_HUGETLB_H
4
5 #include <linux/swap.h>
6 #include <linux/swapops.h>
7
8 static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
9 {
10 return mk_pte(page, pgprot);
11 }
12
13 static inline unsigned long huge_pte_write(pte_t pte)
14 {
15 return pte_write(pte);
16 }
17
18 static inline unsigned long huge_pte_dirty(pte_t pte)
19 {
20 return pte_dirty(pte);
21 }
22
23 static inline pte_t huge_pte_mkwrite(pte_t pte)
24 {
25 return pte_mkwrite_novma(pte);
26 }
27
28 #ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
29 static inline pte_t huge_pte_wrprotect(pte_t pte)
30 {
31 return pte_wrprotect(pte);
32 }
33 #endif
34
35 static inline pte_t huge_pte_mkdirty(pte_t pte)
36 {
37 return pte_mkdirty(pte);
38 }
39
40 static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
41 {
42 return pte_modify(pte, newprot);
43 }
44
45 static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
46 {
47 return huge_pte_wrprotect(pte_mkuffd_wp(pte));
48 }
49
50 static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
51 {
52 return pte_clear_uffd_wp(pte);
53 }
54
55 static inline int huge_pte_uffd_wp(pte_t pte)
56 {
57 return pte_uffd_wp(pte);
58 }
59
60 #ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
61 static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
62 pte_t *ptep, unsigned long sz)
63 {
64 pte_clear(mm, addr, ptep);
65 }
66 #endif
67
68 #ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
69 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
70 unsigned long addr, unsigned long end,
71 unsigned long floor, unsigned long ceiling)
72 {
73 free_pgd_range(tlb, addr, end, floor, ceiling);
74 }
75 #endif
76
77 #ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
78 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
79 pte_t *ptep, pte_t pte, unsigned long sz)
80 {
81 set_pte_at(mm, addr, ptep, pte);
82 }
83 #endif
84
85 #ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
86 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
87 unsigned long addr, pte_t *ptep)
88 {
89 return ptep_get_and_clear(mm, addr, ptep);
90 }
91 #endif
92
93 #ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
94 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
95 unsigned long addr, pte_t *ptep)
96 {
97 return ptep_clear_flush(vma, addr, ptep);
98 }
99 #endif
100
101 #ifndef __HAVE_ARCH_HUGE_PTE_NONE
102 static inline int huge_pte_none(pte_t pte)
103 {
104 return pte_none(pte);
105 }
106 #endif
107
108 /* Please refer to comments above pte_none_mostly() for the usage */
109 static inline int huge_pte_none_mostly(pte_t pte)
110 {
111 return huge_pte_none(pte) || is_pte_marker(pte);
112 }
113
114 #ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
115 static inline int prepare_hugepage_range(struct file *file,
116 unsigned long addr, unsigned long len)
117 {
118 struct hstate *h = hstate_file(file);
119
120 if (len & ~huge_page_mask(h))
121 return -EINVAL;
122 if (addr & ~huge_page_mask(h))
123 return -EINVAL;
124
125 return 0;
126 }
127 #endif
128
129 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
130 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
131 unsigned long addr, pte_t *ptep)
132 {
133 ptep_set_wrprotect(mm, addr, ptep);
134 }
135 #endif
136
137 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
138 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
139 unsigned long addr, pte_t *ptep,
140 pte_t pte, int dirty)
141 {
142 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
143 }
144 #endif
145
146 #ifndef __HAVE_ARCH_HUGE_PTEP_GET
147 static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
148 {
149 return ptep_get(ptep);
150 }
151 #endif
152
153 #ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
154 static inline bool gigantic_page_runtime_supported(void)
155 {
156 return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE);
157 }
158 #endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */
159
160 #endif /* _ASM_GENERIC_HUGETLB_H */
161
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