arch/parisc/include/asm/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_PARISC64_HUGETLB_H
   3 #define _ASM_PARISC64_HUGETLB_H
   4
   5 #include <asm/page.h>
   6
   7 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
   8 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
   9                      pte_t *ptep, pte_t pte);
  10
  11 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  12                               pte_t *ptep);
  13
  14 static inline int is_hugepage_only_range(struct mm_struct *mm,
  15                                          unsigned long addr,
  16                                          unsigned long len) {
  17         return 0;
  18 }
  19
  20 /*
  21  * If the arch doesn't supply something else, assume that hugepage
  22  * size aligned regions are ok without further preparation.
  23  */
  24 static inline int prepare_hugepage_range(struct file *file,
  25                         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 huge_ptep_clear_flush(struct vm_area_struct *vma,
  35                                          unsigned long addr, pte_t *ptep)
  36 {
  37 }
  38
  39 static inline int huge_pte_none(pte_t pte)
  40 {
  41         return pte_none(pte);
  42 }
  43
  44 static inline pte_t huge_pte_wrprotect(pte_t pte)
  45 {
  46         return pte_wrprotect(pte);
  47 }
  48
  49 void huge_ptep_set_wrprotect(struct mm_struct *mm,
  50                                            unsigned long addr, pte_t *ptep);
  51
  52 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  53                                              unsigned long addr, pte_t *ptep,
  54                                              pte_t pte, int dirty);
  55
  56 static inline pte_t huge_ptep_get(pte_t *ptep)
  57 {
  58         return *ptep;
  59 }
  60
  61 static inline void arch_clear_hugepage_flags(struct page *page)
  62 {
  63 }
  64
  65 #include <asm-generic/hugetlb.h>
  66
  67 #endif /* _ASM_PARISC64_HUGETLB_H */