summaryrefslogtreecommitdiff
path: root/include/asm-generic/hugetlb.h
blob: 6dcf4d576970c4b43ce8be9e0373bc39d10e3518 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_HUGETLB_H
#define _ASM_GENERIC_HUGETLB_H

#include <linux/swap.h>
#include <linux/swapops.h>

static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
{
	return mk_pte(page, pgprot);
}

static inline unsigned long huge_pte_write(pte_t pte)
{
	return pte_write(pte);
}

static inline unsigned long huge_pte_dirty(pte_t pte)
{
	return pte_dirty(pte);
}

static inline pte_t huge_pte_mkwrite(pte_t pte)
{
	return pte_mkwrite_novma(pte);
}

#ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
static inline pte_t huge_pte_wrprotect(pte_t pte)
{
	return pte_wrprotect(pte);
}
#endif

static inline pte_t huge_pte_mkdirty(pte_t pte)
{
	return pte_mkdirty(pte);
}

static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
{
	return pte_modify(pte, newprot);
}

static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
{
	return huge_pte_wrprotect(pte_mkuffd_wp(pte));
}

static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
{
	return pte_clear_uffd_wp(pte);
}

static inline int huge_pte_uffd_wp(pte_t pte)
{
	return pte_uffd_wp(pte);
}

#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
		    pte_t *ptep, unsigned long sz)
{
	pte_clear(mm, addr, ptep);
}
#endif

#ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
		unsigned long addr, unsigned long end,
		unsigned long floor, unsigned long ceiling)
{
	free_pgd_range(tlb, addr, end, floor, ceiling);
}
#endif

#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
		pte_t *ptep, pte_t pte, unsigned long sz)
{
	set_pte_at(mm, addr, ptep, pte);
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
		unsigned long addr, pte_t *ptep)
{
	return ptep_get_and_clear(mm, addr, ptep);
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
		unsigned long addr, pte_t *ptep)
{
	return ptep_clear_flush(vma, addr, ptep);
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTE_NONE
static inline int huge_pte_none(pte_t pte)
{
	return pte_none(pte);
}
#endif

/* Please refer to comments above pte_none_mostly() for the usage */
static inline int huge_pte_none_mostly(pte_t pte)
{
	return huge_pte_none(pte) || is_pte_marker(pte);
}

#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
static inline int prepare_hugepage_range(struct file *file,
		unsigned long addr, unsigned long len)
{
	struct hstate *h = hstate_file(file);

	if (len & ~huge_page_mask(h))
		return -EINVAL;
	if (addr & ~huge_page_mask(h))
		return -EINVAL;

	return 0;
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
		unsigned long addr, pte_t *ptep)
{
	ptep_set_wrprotect(mm, addr, ptep);
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
		unsigned long addr, pte_t *ptep,
		pte_t pte, int dirty)
{
	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
}
#endif

#ifndef __HAVE_ARCH_HUGE_PTEP_GET
static inline pte_t huge_ptep_get(pte_t *ptep)
{
	return ptep_get(ptep);
}
#endif

#ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
static inline bool gigantic_page_runtime_supported(void)
{
	return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE);
}
#endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */

#endif /* _ASM_GENERIC_HUGETLB_H */