projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |