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 #define hugepages_supported() cpu_has_pse
8
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)9 static inline int is_hugepage_only_range(struct mm_struct *mm,
10 unsigned long addr,
11 unsigned long len) {
12 return 0;
13 }
14
15 /*
16 * If the arch doesn't supply something else, assume that hugepage
17 * size aligned regions are ok without further preparation.
18 */
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)19 static inline int prepare_hugepage_range(struct file *file,
20 unsigned long addr, unsigned long len)
21 {
22 struct hstate *h = hstate_file(file);
23 if (len & ~huge_page_mask(h))
24 return -EINVAL;
25 if (addr & ~huge_page_mask(h))
26 return -EINVAL;
27 return 0;
28 }
29
hugetlb_prefault_arch_hook(struct mm_struct * mm)30 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
31 }
32
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)33 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
34 unsigned long addr, unsigned long end,
35 unsigned long floor,
36 unsigned long ceiling)
37 {
38 free_pgd_range(tlb, addr, end, floor, ceiling);
39 }
40
set_huge_pte_at(struct mm_struct * mm,unsigned long addr,pte_t * ptep,pte_t pte)41 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
42 pte_t *ptep, pte_t pte)
43 {
44 set_pte_at(mm, addr, ptep, pte);
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_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)53 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
54 unsigned long addr, pte_t *ptep)
55 {
56 ptep_clear_flush(vma, addr, ptep);
57 }
58
huge_pte_none(pte_t pte)59 static inline int huge_pte_none(pte_t pte)
60 {
61 return pte_none(pte);
62 }
63
huge_pte_wrprotect(pte_t pte)64 static inline pte_t huge_pte_wrprotect(pte_t pte)
65 {
66 return pte_wrprotect(pte);
67 }
68
huge_ptep_set_wrprotect(struct mm_struct * mm,unsigned long addr,pte_t * ptep)69 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
70 unsigned long addr, pte_t *ptep)
71 {
72 ptep_set_wrprotect(mm, addr, ptep);
73 }
74
huge_ptep_set_access_flags(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep,pte_t pte,int dirty)75 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
76 unsigned long addr, pte_t *ptep,
77 pte_t pte, int dirty)
78 {
79 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
80 }
81
huge_ptep_get(pte_t * ptep)82 static inline pte_t huge_ptep_get(pte_t *ptep)
83 {
84 return *ptep;
85 }
86
arch_prepare_hugepage(struct page * page)87 static inline int arch_prepare_hugepage(struct page *page)
88 {
89 return 0;
90 }
91
arch_release_hugepage(struct page * page)92 static inline void arch_release_hugepage(struct page *page)
93 {
94 }
95
arch_clear_hugepage_flags(struct page * page)96 static inline void arch_clear_hugepage_flags(struct page *page)
97 {
98 }
99
100 #endif /* _ASM_X86_HUGETLB_H */
101