arch/sparc/include/asm/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SPARC64_HUGETLB_H
   3 #define _ASM_SPARC64_HUGETLB_H
   4
   5 #include <asm/page.h>
   6
   7 #ifdef CONFIG_HUGETLB_PAGE
   8 struct pud_huge_patch_entry {
   9         unsigned int addr;
  10         unsigned int insn;
  11 };
  12 extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
  13 #endif
  14
  15 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
  16 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  17                      pte_t *ptep, pte_t pte, unsigned long sz);
  18 void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  19                      pte_t *ptep, pte_t pte);
  20
  21 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
  22 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  23                               pte_t *ptep);
  24
  25 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  26 static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
  27                                           unsigned long addr, pte_t *ptep)
  28 {
  29         return *ptep;
  30 }
  31
  32 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
  33 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  34                                            unsigned long addr, pte_t *ptep)
  35 {
  36         pte_t old_pte = *ptep;
  37         __set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
  38 }
  39
  40 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
  41 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  42                                              unsigned long addr, pte_t *ptep,
  43                                              pte_t pte, int dirty)
  44 {
  45         int changed = !pte_same(*ptep, pte);
  46         if (changed) {
  47                 __set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
  48                 flush_tlb_page(vma, addr);
  49         }
  50         return changed;
  51 }
  52
  53 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
  54 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
  55                             unsigned long end, unsigned long floor,
  56                             unsigned long ceiling);
  57
  58 #include <asm-generic/hugetlb.h>
  59
  60 #endif /* _ASM_SPARC64_HUGETLB_H */