projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |