1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_GENERIC_HUGETLB_H 3 #define _ASM_GENERIC_HUGETLB_H 4 5 static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot) 6 { 7 return mk_pte(page, pgprot); 8 } 9 10 static inline unsigned long huge_pte_write(pte_t pte) 11 { 12 return pte_write(pte); 13 } 14 15 static inline unsigned long huge_pte_dirty(pte_t pte) 16 { 17 return pte_dirty(pte); 18 } 19 20 static inline pte_t huge_pte_mkwrite(pte_t pte) 21 { 22 return pte_mkwrite(pte); 23 } 24 25 static inline pte_t huge_pte_mkdirty(pte_t pte) 26 { 27 return pte_mkdirty(pte); 28 } 29 30 static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot) 31 { 32 return pte_modify(pte, newprot); 33 } 34 35 #ifndef __HAVE_ARCH_HUGE_PTE_CLEAR 36 static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, 37 pte_t *ptep, unsigned long sz) 38 { 39 pte_clear(mm, addr, ptep); 40 } 41 #endif 42 43 #ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE 44 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 45 unsigned long addr, unsigned long end, 46 unsigned long floor, unsigned long ceiling) 47 { 48 free_pgd_range(tlb, addr, end, floor, ceiling); 49 } 50 #endif 51 52 #ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT 53 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 54 pte_t *ptep, pte_t pte) 55 { 56 set_pte_at(mm, addr, ptep, pte); 57 } 58 #endif 59 60 #ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR 61 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 62 unsigned long addr, pte_t *ptep) 63 { 64 return ptep_get_and_clear(mm, addr, ptep); 65 } 66 #endif 67 68 #ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 69 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 70 unsigned long addr, pte_t *ptep) 71 { 72 ptep_clear_flush(vma, addr, ptep); 73 } 74 #endif 75 76 #ifndef __HAVE_ARCH_HUGE_PTE_NONE 77 static inline int huge_pte_none(pte_t pte) 78 { 79 return pte_none(pte); 80 } 81 #endif 82 83 #ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT 84 static inline pte_t huge_pte_wrprotect(pte_t pte) 85 { 86 return pte_wrprotect(pte); 87 } 88 #endif 89 90 #ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE 91 static inline int prepare_hugepage_range(struct file *file, 92 unsigned long addr, unsigned long len) 93 { 94 struct hstate *h = hstate_file(file); 95 96 if (len & ~huge_page_mask(h)) 97 return -EINVAL; 98 if (addr & ~huge_page_mask(h)) 99 return -EINVAL; 100 101 return 0; 102 } 103 #endif 104 105 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT 106 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 107 unsigned long addr, pte_t *ptep) 108 { 109 ptep_set_wrprotect(mm, addr, ptep); 110 } 111 #endif 112 113 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS 114 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 115 unsigned long addr, pte_t *ptep, 116 pte_t pte, int dirty) 117 { 118 return ptep_set_access_flags(vma, addr, ptep, pte, dirty); 119 } 120 #endif 121 122 #ifndef __HAVE_ARCH_HUGE_PTEP_GET 123 static inline pte_t huge_ptep_get(pte_t *ptep) 124 { 125 return *ptep; 126 } 127 #endif 128 129 #ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED 130 static inline bool gigantic_page_runtime_supported(void) 131 { 132 return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE); 133 } 134 #endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */ 135 136 #endif /* _ASM_GENERIC_HUGETLB_H */ 137