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