kernel/arch/x86/include/asm/hugetlb.h

   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
   8 static inline int is_hugepage_only_range(struct mm_struct *mm,
   9                                          unsigned long addr,
  10                                          unsigned long len) {
  11         return 0;
  12 }
  13
  14 /*
  15  * If the arch doesn't supply something else, assume that hugepage
  16  * size aligned regions are ok without further preparation.
  17  */
  18 static inline int prepare_hugepage_range(struct file *file,
  19                         unsigned long addr, unsigned long len)
  20 {
  21         struct hstate *h = hstate_file(file);
  22         if (len & ~huge_page_mask(h))
  23                 return -EINVAL;
  24         if (addr & ~huge_page_mask(h))
  25                 return -EINVAL;
  26         return 0;
  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         ptep_clear_flush(vma, addr, ptep);
  53 }
  54
  55 static inline int huge_pte_none(pte_t pte)
  56 {
  57         return pte_none(pte);
  58 }
  59
  60 static inline pte_t huge_pte_wrprotect(pte_t pte)
  61 {
  62         return pte_wrprotect(pte);
  63 }
  64
  65 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  66                                            unsigned long addr, pte_t *ptep)
  67 {
  68         ptep_set_wrprotect(mm, addr, ptep);
  69 }
  70
  71 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  72                                              unsigned long addr, pte_t *ptep,
  73                                              pte_t pte, int dirty)
  74 {
  75         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  76 }
  77
  78 static inline pte_t huge_ptep_get(pte_t *ptep)
  79 {
  80         return *ptep;
  81 }
  82
  83 static inline void arch_clear_hugepage_flags(struct page *page)
  84 {
  85 }
  86
  87 #endif /* _ASM_X86_HUGETLB_H */