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gerrit-public.fairphone.software / kernel / msm-4.9 / 26a67ec47a4c58fe79c6421c3dc3d697d322d2d6 / . / arch / x86 / include / asm / hugetlb.h
blob: f8a29d2c97b012febc3728809a5daa53de22cf0f [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_HUGETLB_H
2#define _ASM_X86_HUGETLB_H
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]3
4#include <asm/page.h>
Gerald Schaefer106c9922013-04-29 15:07:23 -0700[diff] [blame]5#include <asm-generic/hugetlb.h>
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]6
7
8static inline int is_hugepage_only_range(struct mm_struct *mm,
9 unsigned long addr,
10 unsigned long len) {
11 return 0;
12}
13
14/*
15 * If the arch doesn't supply something else, assume that hugepage
16 * size aligned regions are ok without further preparation.
17 */
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]18static inline int prepare_hugepage_range(struct file *file,
19 unsigned long addr, unsigned long len)
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]20{
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]21 struct hstate *h = hstate_file(file);
22 if (len & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]23 return -EINVAL;
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]24 if (addr & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]25 return -EINVAL;
26 return 0;
27}
28
Jan Beulich42b77722008-07-23 21:27:10 -0700[diff] [blame]29static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]30 unsigned long addr, unsigned long end,
31 unsigned long floor,
32 unsigned long ceiling)
33{
34 free_pgd_range(tlb, addr, end, floor, ceiling);
35}
36
37static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
38 pte_t *ptep, pte_t pte)
39{
40 set_pte_at(mm, addr, ptep, pte);
41}
42
43static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
44 unsigned long addr, pte_t *ptep)
45{
46 return ptep_get_and_clear(mm, addr, ptep);
47}
48
Gerald Schaefer8fe627e2008-04-28 02:13:28 -0700[diff] [blame]49static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
50 unsigned long addr, pte_t *ptep)
51{
Anthony Iliopoulos9844f542014-05-14 11:29:48 +0200[diff] [blame]52 ptep_clear_flush(vma, addr, ptep);
Gerald Schaefer8fe627e2008-04-28 02:13:28 -0700[diff] [blame]53}
54
Gerald Schaefer7f2e9522008-04-28 02:13:29 -0700[diff] [blame]55static inline int huge_pte_none(pte_t pte)
56{
57 return pte_none(pte);
58}
59
60static inline pte_t huge_pte_wrprotect(pte_t pte)
61{
62 return pte_wrprotect(pte);
63}
64
65static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
66 unsigned long addr, pte_t *ptep)
67{
68 ptep_set_wrprotect(mm, addr, ptep);
69}
70
71static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
72 unsigned long addr, pte_t *ptep,
73 pte_t pte, int dirty)
74{
75 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
76}
77
78static inline pte_t huge_ptep_get(pte_t *ptep)
79{
80 return *ptep;
81}
82
Will Deacon5d3a5512012-10-08 16:29:32 -0700[diff] [blame]83static inline void arch_clear_hugepage_flags(struct page *page)
84{
85}
86
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]87#endif /* _ASM_X86_HUGETLB_H */