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 */
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