include/asm-generic/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_GENERIC_HUGETLB_H
   3 #define _ASM_GENERIC_HUGETLB_H
   4
   5 #include <linux/swap.h>
   6 #include <linux/swapops.h>
   7
   8 static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
   9 {
  10         return mk_pte(page, pgprot);
  11 }
  12
  13 static inline unsigned long huge_pte_write(pte_t pte)
  14 {
  15         return pte_write(pte);
  16 }
  17
  18 static inline unsigned long huge_pte_dirty(pte_t pte)
  19 {
  20         return pte_dirty(pte);
  21 }
  22
  23 static inline pte_t huge_pte_mkwrite(pte_t pte)
  24 {
  25         return pte_mkwrite_novma(pte);
  26 }
  27
  28 #ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
  29 static inline pte_t huge_pte_wrprotect(pte_t pte)
  30 {
  31         return pte_wrprotect(pte);
  32 }
  33 #endif
  34
  35 static inline pte_t huge_pte_mkdirty(pte_t pte)
  36 {
  37         return pte_mkdirty(pte);
  38 }
  39
  40 static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
  41 {
  42         return pte_modify(pte, newprot);
  43 }
  44
  45 #ifndef __HAVE_ARCH_HUGE_PTE_MKUFFD_WP
  46 static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
  47 {
  48         return huge_pte_wrprotect(pte_mkuffd_wp(pte));
  49 }
  50 #endif
  51
  52 #ifndef __HAVE_ARCH_HUGE_PTE_CLEAR_UFFD_WP
  53 static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
  54 {
  55         return pte_clear_uffd_wp(pte);
  56 }
  57 #endif
  58
  59 #ifndef __HAVE_ARCH_HUGE_PTE_UFFD_WP
  60 static inline int huge_pte_uffd_wp(pte_t pte)
  61 {
  62         return pte_uffd_wp(pte);
  63 }
  64 #endif
  65
  66 #ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
  67 static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
  68                     pte_t *ptep, unsigned long sz)
  69 {
  70         pte_clear(mm, addr, ptep);
  71 }
  72 #endif
  73
  74 #ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
  75 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
  76                 unsigned long addr, unsigned long end,
  77                 unsigned long floor, unsigned long ceiling)
  78 {
  79         free_pgd_range(tlb, addr, end, floor, ceiling);
  80 }
  81 #endif
  82
  83 #ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
  84 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  85                 pte_t *ptep, pte_t pte, unsigned long sz)
  86 {
  87         set_pte_at(mm, addr, ptep, pte);
  88 }
  89 #endif
  90
  91 #ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
  92 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  93                 unsigned long addr, pte_t *ptep)
  94 {
  95         return ptep_get_and_clear(mm, addr, ptep);
  96 }
  97 #endif
  98
  99 #ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 100 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
 101                 unsigned long addr, pte_t *ptep)
 102 {
 103         return ptep_clear_flush(vma, addr, ptep);
 104 }
 105 #endif
 106
 107 #ifndef __HAVE_ARCH_HUGE_PTE_NONE
 108 static inline int huge_pte_none(pte_t pte)
 109 {
 110         return pte_none(pte);
 111 }
 112 #endif
 113
 114 /* Please refer to comments above pte_none_mostly() for the usage */
 115 #ifndef __HAVE_ARCH_HUGE_PTE_NONE_MOSTLY
 116 static inline int huge_pte_none_mostly(pte_t pte)
 117 {
 118         return huge_pte_none(pte) || is_pte_marker(pte);
 119 }
 120 #endif
 121
 122 #ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 123 static inline int prepare_hugepage_range(struct file *file,
 124                 unsigned long addr, unsigned long len)
 125 {
 126         return 0;
 127 }
 128 #endif
 129
 130 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 131 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 132                 unsigned long addr, pte_t *ptep)
 133 {
 134         ptep_set_wrprotect(mm, addr, ptep);
 135 }
 136 #endif
 137
 138 #ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 139 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 140                 unsigned long addr, pte_t *ptep,
 141                 pte_t pte, int dirty)
 142 {
 143         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
 144 }
 145 #endif
 146
 147 #ifndef __HAVE_ARCH_HUGE_PTEP_GET
 148 static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 149 {
 150         return ptep_get(ptep);
 151 }
 152 #endif
 153
 154 #ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
 155 static inline bool gigantic_page_runtime_supported(void)
 156 {
 157         return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE);
 158 }
 159 #endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */
 160
 161 #endif /* _ASM_GENERIC_HUGETLB_H */