1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_SH_HUGETLB_H
 3#define _ASM_SH_HUGETLB_H
 4
 5#include <asm/cacheflush.h>
 6#include <asm/page.h>
 
 
 
 
 
 
 
 
 7
 8/*
 9 * If the arch doesn't supply something else, assume that hugepage
10 * size aligned regions are ok without further preparation.
11 */
12#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
13static inline int prepare_hugepage_range(struct file *file,
14			unsigned long addr, unsigned long len)
15{
16	if (len & ~HPAGE_MASK)
17		return -EINVAL;
18	if (addr & ~HPAGE_MASK)
19		return -EINVAL;
20	return 0;
21}
22
23#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
24static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
25					  unsigned long addr, pte_t *ptep)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
26{
27	return *ptep;
28}
29
 
 
 
 
 
 
 
 
 
30static inline void arch_clear_hugepage_flags(struct page *page)
31{
32	clear_bit(PG_dcache_clean, &page->flags);
33}
34#define arch_clear_hugepage_flags arch_clear_hugepage_flags
35
36#include <asm-generic/hugetlb.h>
37
38#endif /* _ASM_SH_HUGETLB_H */

 
 1#ifndef _ASM_SH_HUGETLB_H
 2#define _ASM_SH_HUGETLB_H
 3
 4#include <asm/cacheflush.h>
 5#include <asm/page.h>
 6#include <asm-generic/hugetlb.h>
 7
 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	if (len & ~HPAGE_MASK)
23		return -EINVAL;
24	if (addr & ~HPAGE_MASK)
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}
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 int arch_prepare_hugepage(struct page *page)
86{
87	return 0;
88}
89
90static inline void arch_release_hugepage(struct page *page)
91{
92}
93
94static inline void arch_clear_hugepage_flags(struct page *page)
95{
96	clear_bit(PG_dcache_clean, &page->flags);
97}
 
 
 
98
99#endif /* _ASM_SH_HUGETLB_H */