arch/sh/include/asm/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SH_HUGETLB_H
   3 #define _ASM_SH_HUGETLB_H
   4
   5 #include <asm/cacheflush.h>
   6 #include <asm/page.h>
   7 #include <asm-generic/hugetlb.h>
   8
   9
  10 static inline int is_hugepage_only_range(struct mm_struct *mm,
  11                                          unsigned long addr,
  12                                          unsigned long len) {
  13         return 0;
  14 }
  15
  16 /*
  17  * If the arch doesn't supply something else, assume that hugepage
  18  * size aligned regions are ok without further preparation.
  19  */
  20 static inline int prepare_hugepage_range(struct file *file,
  21                         unsigned long addr, unsigned long len)
  22 {
  23         if (len & ~HPAGE_MASK)
  24                 return -EINVAL;
  25         if (addr & ~HPAGE_MASK)
  26                 return -EINVAL;
  27         return 0;
  28 }
  29
  30 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
  31                                           unsigned long addr, unsigned long end,
  32                                           unsigned long floor,
  33                                           unsigned long ceiling)
  34 {
  35         free_pgd_range(tlb, addr, end, floor, ceiling);
  36 }
  37
  38 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  39                                    pte_t *ptep, pte_t pte)
  40 {
  41         set_pte_at(mm, addr, ptep, pte);
  42 }
  43
  44 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  45                                             unsigned long addr, pte_t *ptep)
  46 {
  47         return ptep_get_and_clear(mm, addr, ptep);
  48 }
  49
  50 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  51                                          unsigned long addr, pte_t *ptep)
  52 {
  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         clear_bit(PG_dcache_clean, &page->flags);
  86 }
  87
  88 #endif /* _ASM_SH_HUGETLB_H */