xref: /linux/include/asm-generic/hugetlb.h (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
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 
mk_huge_pte(struct page * page,pgprot_t pgprot)8 static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
9 {
10 	return mk_pte(page, pgprot);
11 }
12 
huge_pte_write(pte_t pte)13 static inline unsigned long huge_pte_write(pte_t pte)
14 {
15 	return pte_write(pte);
16 }
17 
huge_pte_dirty(pte_t pte)18 static inline unsigned long huge_pte_dirty(pte_t pte)
19 {
20 	return pte_dirty(pte);
21 }
22 
huge_pte_mkwrite(pte_t pte)23 static 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
huge_pte_wrprotect(pte_t pte)29 static inline pte_t huge_pte_wrprotect(pte_t pte)
30 {
31 	return pte_wrprotect(pte);
32 }
33 #endif
34 
huge_pte_mkdirty(pte_t pte)35 static inline pte_t huge_pte_mkdirty(pte_t pte)
36 {
37 	return pte_mkdirty(pte);
38 }
39 
huge_pte_modify(pte_t pte,pgprot_t newprot)40 static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
41 {
42 	return pte_modify(pte, newprot);
43 }
44 
huge_pte_mkuffd_wp(pte_t pte)45 static inline pte_t huge_pte_mkuffd_wp(pte_t pte)
46 {
47 	return huge_pte_wrprotect(pte_mkuffd_wp(pte));
48 }
49 
huge_pte_clear_uffd_wp(pte_t pte)50 static inline pte_t huge_pte_clear_uffd_wp(pte_t pte)
51 {
52 	return pte_clear_uffd_wp(pte);
53 }
54 
huge_pte_uffd_wp(pte_t pte)55 static 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
huge_pte_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep,unsigned long sz)61 static 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
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)69 static 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
set_huge_pte_at(struct mm_struct * mm,unsigned long addr,pte_t * ptep,pte_t pte,unsigned long sz)78 static 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
huge_ptep_get_and_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep)86 static 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
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)94 static 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
huge_pte_none(pte_t pte)102 static 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 */
huge_pte_none_mostly(pte_t pte)109 static 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
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)115 static 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
huge_ptep_set_wrprotect(struct mm_struct * mm,unsigned long addr,pte_t * ptep)130 static 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
huge_ptep_set_access_flags(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep,pte_t pte,int dirty)138 static 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
huge_ptep_get(struct mm_struct * mm,unsigned long addr,pte_t * ptep)147 static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
148 {
149 	return ptep_get(ptep);
150 }
151 #endif
152 
153 #ifndef __HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED
gigantic_page_runtime_supported(void)154 static 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