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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1965aae3 PA |
2 | #ifndef _ASM_X86_HUGETLB_H |
3 | #define _ASM_X86_HUGETLB_H | |
6d779079 GS |
4 | |
5 | #include <asm/page.h> | |
106c992a | 6 | #include <asm-generic/hugetlb.h> |
6d779079 | 7 | |
b2eafe89 | 8 | #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) |
6d779079 GS |
9 | |
10 | static inline int is_hugepage_only_range(struct mm_struct *mm, | |
11 | unsigned long addr, | |
12 | unsigned long len) { | |
13 | return 0; | |
14 | } | |
15 | ||
16 | /* | |
17 | * If the arch doesn't supply something else, assume that hugepage | |
18 | * size aligned regions are ok without further preparation. | |
19 | */ | |
a5516438 AK |
20 | static inline int prepare_hugepage_range(struct file *file, |
21 | unsigned long addr, unsigned long len) | |
6d779079 | 22 | { |
a5516438 AK |
23 | struct hstate *h = hstate_file(file); |
24 | if (len & ~huge_page_mask(h)) | |
6d779079 | 25 | return -EINVAL; |
a5516438 | 26 | if (addr & ~huge_page_mask(h)) |
6d779079 GS |
27 | return -EINVAL; |
28 | return 0; | |
29 | } | |
30 | ||
42b77728 | 31 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, |
6d779079 GS |
32 | unsigned long addr, unsigned long end, |
33 | unsigned long floor, | |
34 | unsigned long ceiling) | |
35 | { | |
36 | free_pgd_range(tlb, addr, end, floor, ceiling); | |
37 | } | |
38 | ||
39 | static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
40 | pte_t *ptep, pte_t pte) | |
41 | { | |
42 | set_pte_at(mm, addr, ptep, pte); | |
43 | } | |
44 | ||
45 | static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, | |
46 | unsigned long addr, pte_t *ptep) | |
47 | { | |
48 | return ptep_get_and_clear(mm, addr, ptep); | |
49 | } | |
50 | ||
8fe627ec GS |
51 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
52 | unsigned long addr, pte_t *ptep) | |
53 | { | |
9844f546 | 54 | ptep_clear_flush(vma, addr, ptep); |
8fe627ec GS |
55 | } |
56 | ||
7f2e9525 GS |
57 | static inline int huge_pte_none(pte_t pte) |
58 | { | |
59 | return pte_none(pte); | |
60 | } | |
61 | ||
62 | static inline pte_t huge_pte_wrprotect(pte_t pte) | |
63 | { | |
64 | return pte_wrprotect(pte); | |
65 | } | |
66 | ||
67 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
68 | unsigned long addr, pte_t *ptep) | |
69 | { | |
70 | ptep_set_wrprotect(mm, addr, ptep); | |
71 | } | |
72 | ||
73 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
74 | unsigned long addr, pte_t *ptep, | |
75 | pte_t pte, int dirty) | |
76 | { | |
77 | return ptep_set_access_flags(vma, addr, ptep, pte, dirty); | |
78 | } | |
79 | ||
80 | static inline pte_t huge_ptep_get(pte_t *ptep) | |
81 | { | |
82 | return *ptep; | |
83 | } | |
84 | ||
5d3a551c WD |
85 | static inline void arch_clear_hugepage_flags(struct page *page) |
86 | { | |
87 | } | |
88 | ||
e1073d1e AK |
89 | #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE |
90 | static inline bool gigantic_page_supported(void) { return true; } | |
91 | #endif | |
92 | ||
1965aae3 | 93 | #endif /* _ASM_X86_HUGETLB_H */ |