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_free_pgd_range(struct mmu_gather *tlb,
30					  unsigned long addr, unsigned long end,
31					  unsigned long floor,
32					  unsigned long ceiling)
33{
34	free_pgd_range(tlb, addr, end, floor, ceiling);
35}
36
37static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
38				   pte_t *ptep, pte_t pte)
39{
40	set_pte_at(mm, addr, ptep, pte);
41}
42
43static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
44					    unsigned long addr, pte_t *ptep)
45{
46	return ptep_get_and_clear(mm, addr, ptep);
47}
48
49static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
50					 unsigned long addr, pte_t *ptep)
51{
52}
53
54static inline int huge_pte_none(pte_t pte)
55{
56	return pte_none(pte);
57}
58
59static inline pte_t huge_pte_wrprotect(pte_t pte)
60{
61	return pte_wrprotect(pte);
62}
63
64static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
65					   unsigned long addr, pte_t *ptep)
66{
67	ptep_set_wrprotect(mm, addr, ptep);
68}
69
70static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
71					     unsigned long addr, pte_t *ptep,
72					     pte_t pte, int dirty)
73{
74	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
75}
76
77static inline pte_t huge_ptep_get(pte_t *ptep)
78{
79	return *ptep;
80}
81
82static inline void arch_clear_hugepage_flags(struct page *page)
83{
84	clear_bit(PG_dcache_clean, &page->flags);
85}
 
 
 
86
87#endif /* _ASM_SH_HUGETLB_H */