tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_HUGETLB_H
2#define _ASM_X86_HUGETLB_H
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 */
17static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
18{
19 if (len & ~HPAGE_MASK)
20 return -EINVAL;
21 if (addr & ~HPAGE_MASK)
22 return -EINVAL;
23 return 0;
24}
25
26static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
27}
28
29static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
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
49static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
50 unsigned long addr, pte_t *ptep)
51{
52}
53
54static inline int huge_pte_none(pte_t pte)
55{
56 return pte_none(pte);
57}
58
59static inline pte_t huge_pte_wrprotect(pte_t pte)
60{
61 return pte_wrprotect(pte);
62}
63
64static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
65 unsigned long addr, pte_t *ptep)
66{
67 ptep_set_wrprotect(mm, addr, ptep);
68}
69
70static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
71 unsigned long addr, pte_t *ptep,
72 pte_t pte, int dirty)
73{
74 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
75}
76
77static inline pte_t huge_ptep_get(pte_t *ptep)
78{
79 return *ptep;
80}
81
82static inline int arch_prepare_hugepage(struct page *page)
83{
84 return 0;
85}
86
87static inline void arch_release_hugepage(struct page *page)
88{
89}
90
91#endif /* _ASM_X86_HUGETLB_H */