1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_GENERIC_HUGETLB_H
3#define _ASM_GENERIC_HUGETLB_H
4
5#include <linux/swap.h>
6#include <linux/swapops.h>
7
8static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
9{
10	return mk_pte(page, pgprot);
11}
12
13static inline unsigned long huge_pte_write(pte_t pte)
14{
15	return pte_write(pte);
16}
17
18static inline unsigned long huge_pte_dirty(pte_t pte)
19{
20	return pte_dirty(pte);
21}
22
23static inline pte_t huge_pte_mkwrite(pte_t pte)
24{
25	return pte_mkwrite_novma(pte);
26}
27
28#ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
29static inline pte_t huge_pte_wrprotect(pte_t pte)
30{
31	return pte_wrprotect(pte);
32}
33#endif
34
35static inline pte_t huge_pte_mkdirty(pte_t pte)
36{
37	return pte_mkdirty(pte);
38}
39
40static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
41{
42	return pte_modify(pte, newprot);
43}
44
45static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
46{
47	return huge_pte_wrprotect(pte_mkuffd_wp(pte));
48}
49
50static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
51{
52	return pte_clear_uffd_wp(pte);
53}
54
55static inline int huge_pte_uffd_wp(pte_t pte)
56{
57	return pte_uffd_wp(pte);
58}
59
60#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
61static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
62		    pte_t *ptep, unsigned long sz)
63{
64	pte_clear(mm, addr, ptep);
65}
66#endif
67
68#ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
69static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
70		unsigned long addr, unsigned long end,
71		unsigned long floor, unsigned long ceiling)
72{
73	free_pgd_range(tlb, addr, end, floor, ceiling);
74}
75#endif
76
77#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
78static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
79		pte_t *ptep, pte_t pte, unsigned long sz)
80{
81	set_pte_at(mm, addr, ptep, pte);
82}
83#endif
84
85#ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
86static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
87		unsigned long addr, pte_t *ptep)
88{
89	return ptep_get_and_clear(mm, addr, ptep);
90}
91#endif
92
93#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
94static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
95		unsigned long addr, pte_t *ptep)
96{
97	return ptep_clear_flush(vma, addr, ptep);
98}
99#endif
100
101#ifndef __HAVE_ARCH_HUGE_PTE_NONE
102static inline int huge_pte_none(pte_t pte)
103{
104	return pte_none(pte);
105}
106#endif
107
108/* Please refer to comments above pte_none_mostly() for the usage */
109static inline int huge_pte_none_mostly(pte_t pte)
110{
111	return huge_pte_none(pte) || is_pte_marker(pte);
112}
113
114#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
115static inline int prepare_hugepage_range(struct file *file,
116		unsigned long addr, unsigned long len)
117{
118	struct hstate *h = hstate_file(file);
119
120	if (len & ~huge_page_mask(h))
121		return -EINVAL;
122	if (addr & ~huge_page_mask(h))
123		return -EINVAL;
124
125	return 0;
126}
127#endif
128
129#ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
130static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
131		unsigned long addr, pte_t *ptep)
132{
133	ptep_set_wrprotect(mm, addr, ptep);
134}
135#endif
136
137#ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
138static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
139		unsigned long addr, pte_t *ptep,
140		pte_t pte, int dirty)
141{
142	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
143}
144#endif
145
146#ifndef __HAVE_ARCH_HUGE_PTEP_GET
147static inline pte_t huge_ptep_get(pte_t *ptep)
148{
149	return ptep_get(ptep);
150}
151#endif
152
153#ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
154static inline bool gigantic_page_runtime_supported(void)
155{
156	return IS_ENABLED(CONFIG_ARCH_HAS_GIGANTIC_PAGE);
157}
158#endif /* __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED */
159
160#endif /* _ASM_GENERIC_HUGETLB_H */
161