1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_HUGETLB_H
 3#define _ASM_X86_HUGETLB_H
 4
 5#include <asm/page.h>
 6#include <asm-generic/hugetlb.h>
 7
 8#define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE)
 9
10static inline int is_hugepage_only_range(struct mm_struct *mm,
11					 unsigned long addr,
12					 unsigned long len) {
13	return 0;
14}
15
16/*
17 * If the arch doesn't supply something else, assume that hugepage
18 * size aligned regions are ok without further preparation.
19 */
20static inline int prepare_hugepage_range(struct file *file,
21			unsigned long addr, unsigned long len)
22{
23	struct hstate *h = hstate_file(file);
24	if (len & ~huge_page_mask(h))
25		return -EINVAL;
26	if (addr & ~huge_page_mask(h))
27		return -EINVAL;
28	return 0;
29}
30
 
 
 
31static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
32					  unsigned long addr, unsigned long end,
33					  unsigned long floor,
34					  unsigned long ceiling)
35{
36	free_pgd_range(tlb, addr, end, floor, ceiling);
37}
38
39static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
40				   pte_t *ptep, pte_t pte)
41{
42	set_pte_at(mm, addr, ptep, pte);
43}
44
45static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
46					    unsigned long addr, pte_t *ptep)
47{
48	return ptep_get_and_clear(mm, addr, ptep);
49}
50
51static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52					 unsigned long addr, pte_t *ptep)
53{
54	ptep_clear_flush(vma, addr, ptep);
55}
56
57static inline int huge_pte_none(pte_t pte)
58{
59	return pte_none(pte);
60}
61
62static inline pte_t huge_pte_wrprotect(pte_t pte)
63{
64	return pte_wrprotect(pte);
65}
66
67static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
68					   unsigned long addr, pte_t *ptep)
69{
70	ptep_set_wrprotect(mm, addr, ptep);
71}
72
73static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
74					     unsigned long addr, pte_t *ptep,
75					     pte_t pte, int dirty)
76{
77	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
78}
79
80static inline pte_t huge_ptep_get(pte_t *ptep)
81{
82	return *ptep;
83}
84
85static inline void arch_clear_hugepage_flags(struct page *page)
 
 
 
 
 
86{
87}
88
89#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE
90static inline bool gigantic_page_supported(void) { return true; }
91#endif
92
93#endif /* _ASM_X86_HUGETLB_H */

 
 1#ifndef _ASM_X86_HUGETLB_H
 2#define _ASM_X86_HUGETLB_H
 3
 4#include <asm/page.h>
 5#include <asm-generic/hugetlb.h>
 6
 
 7
 8static inline int is_hugepage_only_range(struct mm_struct *mm,
 9					 unsigned long addr,
10					 unsigned long len) {
11	return 0;
12}
13
14/*
15 * If the arch doesn't supply something else, assume that hugepage
16 * size aligned regions are ok without further preparation.
17 */
18static inline int prepare_hugepage_range(struct file *file,
19			unsigned long addr, unsigned long len)
20{
21	struct hstate *h = hstate_file(file);
22	if (len & ~huge_page_mask(h))
23		return -EINVAL;
24	if (addr & ~huge_page_mask(h))
25		return -EINVAL;
26	return 0;
27}
28
29static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
30}
31
32static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
33					  unsigned long addr, unsigned long end,
34					  unsigned long floor,
35					  unsigned long ceiling)
36{
37	free_pgd_range(tlb, addr, end, floor, ceiling);
38}
39
40static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
41				   pte_t *ptep, pte_t pte)
42{
43	set_pte_at(mm, addr, ptep, pte);
44}
45
46static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
47					    unsigned long addr, pte_t *ptep)
48{
49	return ptep_get_and_clear(mm, addr, ptep);
50}
51
52static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
53					 unsigned long addr, pte_t *ptep)
54{
55	ptep_clear_flush(vma, addr, ptep);
56}
57
58static inline int huge_pte_none(pte_t pte)
59{
60	return pte_none(pte);
61}
62
63static inline pte_t huge_pte_wrprotect(pte_t pte)
64{
65	return pte_wrprotect(pte);
66}
67
68static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
69					   unsigned long addr, pte_t *ptep)
70{
71	ptep_set_wrprotect(mm, addr, ptep);
72}
73
74static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
75					     unsigned long addr, pte_t *ptep,
76					     pte_t pte, int dirty)
77{
78	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
79}
80
81static inline pte_t huge_ptep_get(pte_t *ptep)
82{
83	return *ptep;
84}
85
86static inline int arch_prepare_hugepage(struct page *page)
87{
88	return 0;
89}
90
91static inline void arch_release_hugepage(struct page *page)
92{
93}
94
95static inline void arch_clear_hugepage_flags(struct page *page)
96{
97}
98
99#endif /* _ASM_X86_HUGETLB_H */