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