Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
a00736e9 SR |
2 | #ifndef _ASM_SPARC64_HUGETLB_H |
3 | #define _ASM_SPARC64_HUGETLB_H | |
4 | ||
5 | #include <asm/page.h> | |
106c992a | 6 | #include <asm-generic/hugetlb.h> |
a00736e9 | 7 | |
df7b2155 NG |
8 | #ifdef CONFIG_HUGETLB_PAGE |
9 | struct pud_huge_patch_entry { | |
10 | unsigned int addr; | |
11 | unsigned int insn; | |
12 | }; | |
13 | extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; | |
14 | #endif | |
a00736e9 SR |
15 | |
16 | void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
17 | pte_t *ptep, pte_t pte); | |
18 | ||
19 | pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, | |
20 | pte_t *ptep); | |
21 | ||
a00736e9 SR |
22 | static inline int is_hugepage_only_range(struct mm_struct *mm, |
23 | unsigned long addr, | |
24 | unsigned long len) { | |
25 | return 0; | |
26 | } | |
27 | ||
28 | /* | |
29 | * If the arch doesn't supply something else, assume that hugepage | |
30 | * size aligned regions are ok without further preparation. | |
31 | */ | |
a5516438 AK |
32 | static inline int prepare_hugepage_range(struct file *file, |
33 | unsigned long addr, unsigned long len) | |
a00736e9 | 34 | { |
b6c41cb0 NG |
35 | struct hstate *h = hstate_file(file); |
36 | ||
37 | if (len & ~huge_page_mask(h)) | |
a00736e9 | 38 | return -EINVAL; |
b6c41cb0 | 39 | if (addr & ~huge_page_mask(h)) |
a00736e9 SR |
40 | return -EINVAL; |
41 | return 0; | |
42 | } | |
43 | ||
a00736e9 SR |
44 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
45 | unsigned long addr, pte_t *ptep) | |
46 | { | |
47 | } | |
48 | ||
49 | static inline int huge_pte_none(pte_t pte) | |
50 | { | |
51 | return pte_none(pte); | |
52 | } | |
53 | ||
54 | static inline pte_t huge_pte_wrprotect(pte_t pte) | |
55 | { | |
56 | return pte_wrprotect(pte); | |
57 | } | |
58 | ||
59 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
60 | unsigned long addr, pte_t *ptep) | |
61 | { | |
6cb9c369 DK |
62 | pte_t old_pte = *ptep; |
63 | set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); | |
a00736e9 SR |
64 | } |
65 | ||
66 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
67 | unsigned long addr, pte_t *ptep, | |
68 | pte_t pte, int dirty) | |
69 | { | |
6cb9c369 DK |
70 | int changed = !pte_same(*ptep, pte); |
71 | if (changed) { | |
72 | set_huge_pte_at(vma->vm_mm, addr, ptep, pte); | |
73 | flush_tlb_page(vma, addr); | |
74 | } | |
75 | return changed; | |
a00736e9 SR |
76 | } |
77 | ||
78 | static inline pte_t huge_ptep_get(pte_t *ptep) | |
79 | { | |
80 | return *ptep; | |
81 | } | |
82 | ||
5d3a551c WD |
83 | static inline void arch_clear_hugepage_flags(struct page *page) |
84 | { | |
85 | } | |
86 | ||
7bc3777c NG |
87 | void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, |
88 | unsigned long end, unsigned long floor, | |
89 | unsigned long ceiling); | |
90 | ||
a00736e9 | 91 | #endif /* _ASM_SPARC64_HUGETLB_H */ |