LXR linux/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
   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
  23static inline int is_hugepage_only_range(struct mm_struct *mm,
  24                                         unsigned long addr,
  25                                         unsigned long len) {
  26        return 0;
  27}
  28
  29#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  30static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  31                                         unsigned long addr, pte_t *ptep)
  32{
  33}
  34
  35#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
  36static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  37                                           unsigned long addr, pte_t *ptep)
  38{
  39        pte_t old_pte = *ptep;
  40        set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
  41}
  42
  43#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
  44static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  45                                             unsigned long addr, pte_t *ptep,
  46                                             pte_t pte, int dirty)
  47{
  48        int changed = !pte_same(*ptep, pte);
  49        if (changed) {
  50                set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
  51                flush_tlb_page(vma, addr);
  52        }
  53        return changed;
  54}
  55
  56static inline void arch_clear_hugepage_flags(struct page *page)
  57{
  58}
  59
  60#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
  61void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
  62                            unsigned long end, unsigned long floor,
  63                            unsigned long ceiling);
  64
  65#include <asm-generic/hugetlb.h>
  66
  67#endif /* _ASM_SPARC64_HUGETLB_H */
  68