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