git.rot13.org Git - linux/blob - 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
   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         if (len & ~HPAGE_MASK)
  22                 return -EINVAL;
  23         if (addr & ~HPAGE_MASK)
  24                 return -EINVAL;
  25         return 0;
  26 }
  27
  28 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  29 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  30                                          unsigned long addr, pte_t *ptep)
  31 {
  32 }
  33
  34 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  35                                            unsigned long addr, pte_t *ptep)
  36 {
  37         ptep_set_wrprotect(mm, addr, ptep);
  38 }
  39
  40 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  41                                              unsigned long addr, pte_t *ptep,
  42                                              pte_t pte, int dirty)
  43 {
  44         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  45 }
  46
  47 static inline pte_t huge_ptep_get(pte_t *ptep)
  48 {
  49         return *ptep;
  50 }
  51
  52 static inline void arch_clear_hugepage_flags(struct page *page)
  53 {
  54         clear_bit(PG_dcache_clean, &page->flags);
  55 }
  56
  57 #include <asm-generic/hugetlb.h>
  58
  59 #endif /* _ASM_SH_HUGETLB_H */