Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / arch / x86 / include / asm / hugetlb.h
1 #ifndef _ASM_X86_HUGETLB_H
2 #define _ASM_X86_HUGETLB_H
3
4 #include <asm/page.h>
5 #include <asm-generic/hugetlb.h>
6
7
8 static 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  */
18 static inline int prepare_hugepage_range(struct file *file,
19                         unsigned long addr, unsigned long len)
20 {
21         struct hstate *h = hstate_file(file);
22         if (len & ~huge_page_mask(h))
23                 return -EINVAL;
24         if (addr & ~huge_page_mask(h))
25                 return -EINVAL;
26         return 0;
27 }
28
29 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
30 }
31
32 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
33                                           unsigned long addr, unsigned long end,
34                                           unsigned long floor,
35                                           unsigned long ceiling)
36 {
37         free_pgd_range(tlb, addr, end, floor, ceiling);
38 }
39
40 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
41                                    pte_t *ptep, pte_t pte)
42 {
43         set_pte_at(mm, addr, ptep, pte);
44 }
45
46 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
47                                             unsigned long addr, pte_t *ptep)
48 {
49         return ptep_get_and_clear(mm, addr, ptep);
50 }
51
52 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
53                                          unsigned long addr, pte_t *ptep)
54 {
55         ptep_clear_flush(vma, addr, ptep);
56 }
57
58 static inline int huge_pte_none(pte_t pte)
59 {
60         return pte_none(pte);
61 }
62
63 static inline pte_t huge_pte_wrprotect(pte_t pte)
64 {
65         return pte_wrprotect(pte);
66 }
67
68 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
69                                            unsigned long addr, pte_t *ptep)
70 {
71         ptep_set_wrprotect(mm, addr, ptep);
72 }
73
74 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
75                                              unsigned long addr, pte_t *ptep,
76                                              pte_t pte, int dirty)
77 {
78         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
79 }
80
81 static inline pte_t huge_ptep_get(pte_t *ptep)
82 {
83         return *ptep;
84 }
85
86 static inline int arch_prepare_hugepage(struct page *page)
87 {
88         return 0;
89 }
90
91 static inline void arch_release_hugepage(struct page *page)
92 {
93 }
94
95 static inline void arch_clear_hugepage_flags(struct page *page)
96 {
97 }
98
99 #endif /* _ASM_X86_HUGETLB_H */