tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_POWERPC_HUGETLB_H
2#define _ASM_POWERPC_HUGETLB_H
3
4#include <asm/page.h>
5
6
7int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
8 unsigned long len);
9
10void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
11 unsigned long end, unsigned long floor,
12 unsigned long ceiling);
13
14void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
15 pte_t *ptep, pte_t pte);
16
17pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
18 pte_t *ptep);
19
20/*
21 * The version of vma_mmu_pagesize() in arch/powerpc/mm/hugetlbpage.c needs
22 * to override the version in mm/hugetlb.c
23 */
24#define vma_mmu_pagesize vma_mmu_pagesize
25
26/*
27 * If the arch doesn't supply something else, assume that hugepage
28 * size aligned regions are ok without further preparation.
29 */
30static inline int prepare_hugepage_range(struct file *file,
31 unsigned long addr, unsigned long len)
32{
33 struct hstate *h = hstate_file(file);
34 if (len & ~huge_page_mask(h))
35 return -EINVAL;
36 if (addr & ~huge_page_mask(h))
37 return -EINVAL;
38 return 0;
39}
40
41static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
42{
43}
44
45static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
46 unsigned long addr, pte_t *ptep)
47{
48}
49
50static inline int huge_pte_none(pte_t pte)
51{
52 return pte_none(pte);
53}
54
55static inline pte_t huge_pte_wrprotect(pte_t pte)
56{
57 return pte_wrprotect(pte);
58}
59
60static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
61 unsigned long addr, pte_t *ptep,
62 pte_t pte, int dirty)
63{
64 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
65}
66
67static inline pte_t huge_ptep_get(pte_t *ptep)
68{
69 return *ptep;
70}
71
72static inline int arch_prepare_hugepage(struct page *page)
73{
74 return 0;
75}
76
77static inline void arch_release_hugepage(struct page *page)
78{
79}
80
81#endif /* _ASM_POWERPC_HUGETLB_H */