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 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 */