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