1#ifndef _ASM_SH_HUGETLB_H
 2#define _ASM_SH_HUGETLB_H
 3
 
 4#include <asm/page.h>
 5
 6
 7static inline int is_hugepage_only_range(struct mm_struct *mm,
 8					 unsigned long addr,
 9					 unsigned long len) {
10	return 0;
11}
12
13/*
14 * If the arch doesn't supply something else, assume that hugepage
15 * size aligned regions are ok without further preparation.
16 */
 
17static inline int prepare_hugepage_range(struct file *file,
18			unsigned long addr, unsigned long len)
19{
20	if (len & ~HPAGE_MASK)
21		return -EINVAL;
22	if (addr & ~HPAGE_MASK)
23		return -EINVAL;
24	return 0;
25}
26
27static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
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}
54
55static inline int huge_pte_none(pte_t pte)
56{
57	return pte_none(pte);
58}
59
60static inline pte_t huge_pte_wrprotect(pte_t pte)
61{
62	return pte_wrprotect(pte);
63}
64
65static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
66					   unsigned long addr, pte_t *ptep)
67{
68	ptep_set_wrprotect(mm, addr, ptep);
69}
70
71static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
72					     unsigned long addr, pte_t *ptep,
73					     pte_t pte, int dirty)
74{
75	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
76}
77
78static inline pte_t huge_ptep_get(pte_t *ptep)
79{
80	return *ptep;
81}
82
83static inline int arch_prepare_hugepage(struct page *page)
84{
85	return 0;
86}
 
87
88static inline void arch_release_hugepage(struct page *page)
89{
90}
91
92#endif /* _ASM_SH_HUGETLB_H */

 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 */