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 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
  12 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  13                               pte_t *ptep);
  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(struct file *file,
  26                         unsigned long addr, unsigned long len)
  27 {
  28         if (len & ~HPAGE_MASK)
  29                 return -EINVAL;
  30         if (addr & ~HPAGE_MASK)
  31                 return -EINVAL;
  32         return 0;
  33 }
  34
  35 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  36                                          unsigned long addr, pte_t *ptep)
  37 {
  38 }
  39
  40 static inline int huge_pte_none(pte_t pte)
  41 {
  42         return pte_none(pte);
  43 }
  44
  45 static inline pte_t huge_pte_wrprotect(pte_t pte)
  46 {
  47         return pte_wrprotect(pte);
  48 }
  49
  50 void huge_ptep_set_wrprotect(struct mm_struct *mm,
  51                                            unsigned long addr, pte_t *ptep);
  52
  53 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  54                                              unsigned long addr, pte_t *ptep,
  55                                              pte_t pte, int dirty);
  56
  57 static inline pte_t huge_ptep_get(pte_t *ptep)
  58 {
  59         return *ptep;
  60 }
  61
  62 static inline void arch_clear_hugepage_flags(struct page *page)
  63 {
  64 }
  65
  66 #include <asm-generic/hugetlb.h>
  67
  68 #endif /* _ASM_PARISC64_HUGETLB_H */