1 /*
2 * arch/arm64/include/asm/hugetlb.h
3 *
4 * Copyright (C) 2013 Linaro Ltd.
5 *
6 * Based on arch/x86/include/asm/hugetlb.h
7 *
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.
11 *
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.
16 */
17
18 #ifndef __ASM_HUGETLB_H
19 #define __ASM_HUGETLB_H
20
21 #include <asm-generic/hugetlb.h>
22 #include <asm/page.h>
23
huge_ptep_get(pte_t * ptep)24 static inline pte_t huge_ptep_get(pte_t *ptep)
25 {
26 return *ptep;
27 }
28
set_huge_pte_at(struct mm_struct * mm,unsigned long addr,pte_t * ptep,pte_t pte)29 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
30 pte_t *ptep, pte_t pte)
31 {
32 set_pte_at(mm, addr, ptep, pte);
33 }
34
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)35 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
36 unsigned long addr, pte_t *ptep)
37 {
38 ptep_clear_flush(vma, addr, ptep);
39 }
40
huge_ptep_set_wrprotect(struct mm_struct * mm,unsigned long addr,pte_t * ptep)41 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
42 unsigned long addr, pte_t *ptep)
43 {
44 ptep_set_wrprotect(mm, addr, ptep);
45 }
46
huge_ptep_get_and_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep)47 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
48 unsigned long addr, pte_t *ptep)
49 {
50 return ptep_get_and_clear(mm, addr, ptep);
51 }
52
huge_ptep_set_access_flags(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep,pte_t pte,int dirty)53 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
54 unsigned long addr, pte_t *ptep,
55 pte_t pte, int dirty)
56 {
57 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
58 }
59
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)60 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
61 unsigned long addr, unsigned long end,
62 unsigned long floor,
63 unsigned long ceiling)
64 {
65 free_pgd_range(tlb, addr, end, floor, ceiling);
66 }
67
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)68 static inline int is_hugepage_only_range(struct mm_struct *mm,
69 unsigned long addr, unsigned long len)
70 {
71 return 0;
72 }
73
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)74 static inline int prepare_hugepage_range(struct file *file,
75 unsigned long addr, unsigned long len)
76 {
77 struct hstate *h = hstate_file(file);
78 if (len & ~huge_page_mask(h))
79 return -EINVAL;
80 if (addr & ~huge_page_mask(h))
81 return -EINVAL;
82 return 0;
83 }
84
huge_pte_none(pte_t pte)85 static inline int huge_pte_none(pte_t pte)
86 {
87 return pte_none(pte);
88 }
89
huge_pte_wrprotect(pte_t pte)90 static inline pte_t huge_pte_wrprotect(pte_t pte)
91 {
92 return pte_wrprotect(pte);
93 }
94
arch_clear_hugepage_flags(struct page * page)95 static inline void arch_clear_hugepage_flags(struct page *page)
96 {
97 clear_bit(PG_dcache_clean, &page->flags);
98 }
99
100 #endif /* __ASM_HUGETLB_H */
101