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gerrit-public.fairphone.software / fp2-dev / kernel / msm / cd0aca2d550f238d80ba58e7dcade4ea3d0a3aa7 / . / arch / x86 / include / asm / hugetlb.h
blob: 439a9acc132d10f77b469fc24b250f3acc2f51d9 [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>
5
6
7static inline int is_hugepage_only_range(struct mm_struct *mm,
8 unsigned long addr,
9 unsigned long len) {
10 return 0;
11}
12
13/*
14 * If the arch doesn't supply something else, assume that hugepage
15 * size aligned regions are ok without further preparation.
16 */
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]17static inline int prepare_hugepage_range(struct file *file,
18 unsigned long addr, unsigned long len)
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]19{
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]20 struct hstate *h = hstate_file(file);
21 if (len & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]22 return -EINVAL;
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]23 if (addr & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]24 return -EINVAL;
25 return 0;
26}
27
28static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
29}
30
Jan Beulich42b77722008-07-23 21:27:10 -0700[diff] [blame]31static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]32 unsigned long addr, unsigned long end,
33 unsigned long floor,
34 unsigned long ceiling)
35{
36 free_pgd_range(tlb, addr, end, floor, ceiling);
37}
38
39static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
40 pte_t *ptep, pte_t pte)
41{
42 set_pte_at(mm, addr, ptep, pte);
43}
44
45static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
46 unsigned long addr, pte_t *ptep)
47{
48 return ptep_get_and_clear(mm, addr, ptep);
49}
50
Gerald Schaefer8fe627e2008-04-28 02:13:28 -0700[diff] [blame]51static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52 unsigned long addr, pte_t *ptep)
53{
54}
55
Gerald Schaefer7f2e9522008-04-28 02:13:29 -0700[diff] [blame]56static inline int huge_pte_none(pte_t pte)
57{
58 return pte_none(pte);
59}
60
61static inline pte_t huge_pte_wrprotect(pte_t pte)
62{
63 return pte_wrprotect(pte);
64}
65
66static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
67 unsigned long addr, pte_t *ptep)
68{
69 ptep_set_wrprotect(mm, addr, ptep);
70}
71
72static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
73 unsigned long addr, pte_t *ptep,
74 pte_t pte, int dirty)
75{
76 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
77}
78
79static inline pte_t huge_ptep_get(pte_t *ptep)
80{
81 return *ptep;
82}
83
84static inline int arch_prepare_hugepage(struct page *page)
85{
86 return 0;
87}
88
89static inline void arch_release_hugepage(struct page *page)
90{
91}
92
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]93#endif /* _ASM_X86_HUGETLB_H */