2 * arch/arm64/include/asm/hugetlb.h
4 * Copyright (C) 2013 Linaro Ltd.
6 * Based on arch/x86/include/asm/hugetlb.h
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
18 #ifndef __ASM_HUGETLB_H
19 #define __ASM_HUGETLB_H
21 #include <asm-generic/hugetlb.h>
24 static inline pte_t huge_ptep_get(pte_t *ptep)
31 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
32 unsigned long addr, unsigned long end,
34 unsigned long ceiling)
36 free_pgd_range(tlb, addr, end, floor, ceiling);
39 static inline int is_hugepage_only_range(struct mm_struct *mm,
40 unsigned long addr, unsigned long len)
45 static inline int prepare_hugepage_range(struct file *file,
46 unsigned long addr, unsigned long len)
48 struct hstate *h = hstate_file(file);
49 if (len & ~huge_page_mask(h))
51 if (addr & ~huge_page_mask(h))
56 static inline int huge_pte_none(pte_t pte)
61 static inline pte_t huge_pte_wrprotect(pte_t pte)
63 return pte_wrprotect(pte);
66 static inline void arch_clear_hugepage_flags(struct page *page)
68 clear_bit(PG_dcache_clean, &page->flags);
71 extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
72 struct page *page, int writable);
73 #define arch_make_huge_pte arch_make_huge_pte
74 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
75 pte_t *ptep, pte_t pte);
76 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
77 unsigned long addr, pte_t *ptep,
78 pte_t pte, int dirty);
79 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
80 unsigned long addr, pte_t *ptep);
81 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
82 unsigned long addr, pte_t *ptep);
83 extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
84 unsigned long addr, pte_t *ptep);
86 #endif /* __ASM_HUGETLB_H */