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