arch/arm64/include/asm/hugetlb.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * arch/arm64/include/asm/hugetlb.h
   4  *
   5  * Copyright (C) 2013 Linaro Ltd.
   6  *
   7  * Based on arch/x86/include/asm/hugetlb.h
   8  */
   9
  10 #ifndef __ASM_HUGETLB_H
  11 #define __ASM_HUGETLB_H
  12
  13 #include <asm/page.h>
  14
  15 #ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
  16 #define arch_hugetlb_migration_supported arch_hugetlb_migration_supported
  17 extern bool arch_hugetlb_migration_supported(struct hstate *h);
  18 #endif
  19
  20 static inline void arch_clear_hugepage_flags(struct page *page)
  21 {
  22         clear_bit(PG_dcache_clean, &page->flags);
  23 }
  24 #define arch_clear_hugepage_flags arch_clear_hugepage_flags
  25
  26 pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
  27 #define arch_make_huge_pte arch_make_huge_pte
  28 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
  29 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  30                             pte_t *ptep, pte_t pte);
  31 #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
  32 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  33                                       unsigned long addr, pte_t *ptep,
  34                                       pte_t pte, int dirty);
  35 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
  36 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  37                                      unsigned long addr, pte_t *ptep);
  38 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
  39 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
  40                                     unsigned long addr, pte_t *ptep);
  41 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
  42 extern pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
  43                                    unsigned long addr, pte_t *ptep);
  44 #define __HAVE_ARCH_HUGE_PTE_CLEAR
  45 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
  46                            pte_t *ptep, unsigned long sz);
  47 #define __HAVE_ARCH_HUGE_PTEP_GET
  48 extern pte_t huge_ptep_get(pte_t *ptep);
  49
  50 void __init arm64_hugetlb_cma_reserve(void);
  51
  52 #define huge_ptep_modify_prot_start huge_ptep_modify_prot_start
  53 extern pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma,
  54                                          unsigned long addr, pte_t *ptep);
  55
  56 #define huge_ptep_modify_prot_commit huge_ptep_modify_prot_commit
  57 extern void huge_ptep_modify_prot_commit(struct vm_area_struct *vma,
  58                                          unsigned long addr, pte_t *ptep,
  59                                          pte_t old_pte, pte_t new_pte);
  60
  61 #include <asm-generic/hugetlb.h>
  62
  63 #endif /* __ASM_HUGETLB_H */