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   1 #ifndef _ASM_SPARC64_HUGETLB_H
   2 #define _ASM_SPARC64_HUGETLB_H
   3
   4 #include <asm/page.h>
   5
   6
   7 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
   8                      pte_t *ptep, pte_t pte);
   9
  10 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  11                               pte_t *ptep);
  12
  13 void hugetlb_prefault_arch_hook(struct mm_struct *mm);
  14
  15 static inline int is_hugepage_only_range(struct mm_struct *mm,
  16                                          unsigned long addr,
  17                                          unsigned long len) {
  18         return 0;
  19 }
  20
  21 /*
  22  * If the arch doesn't supply something else, assume that hugepage
  23  * size aligned regions are ok without further preparation.
  24  */
  25 static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
  26 {
  27         if (len & ~HPAGE_MASK)
  28                 return -EINVAL;
  29         if (addr & ~HPAGE_MASK)
  30                 return -EINVAL;
  31         return 0;
  32 }
  33
  34 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
  35                                           unsigned long addr, unsigned long end,
  36                                           unsigned long floor,
  37                                           unsigned long ceiling)
  38 {
  39         free_pgd_range(tlb, addr, end, floor, ceiling);
  40 }
  41
  42 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  43                                          unsigned long addr, pte_t *ptep)
  44 {
  45 }
  46
  47 static inline int huge_pte_none(pte_t pte)
  48 {
  49         return pte_none(pte);
  50 }
  51
  52 static inline pte_t huge_pte_wrprotect(pte_t pte)
  53 {
  54         return pte_wrprotect(pte);
  55 }
  56
  57 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  58                                            unsigned long addr, pte_t *ptep)
  59 {
  60         ptep_set_wrprotect(mm, addr, ptep);
  61 }
  62
  63 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  64                                              unsigned long addr, pte_t *ptep,
  65                                              pte_t pte, int dirty)
  66 {
  67         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  68 }
  69
  70 static inline pte_t huge_ptep_get(pte_t *ptep)
  71 {
  72         return *ptep;
  73 }
  74
  75 static inline int arch_prepare_hugepage(struct page *page)
  76 {
  77         return 0;
  78 }
  79
  80 static inline void arch_release_hugepage(struct page *page)
  81 {
  82 }
  83
  84 #endif /* _ASM_SPARC64_HUGETLB_H */