1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_SPARC64_HUGETLB_H
 3#define _ASM_SPARC64_HUGETLB_H
 4
 5#include <asm/page.h>
 6#include <asm-generic/hugetlb.h>
 7
 8#ifdef CONFIG_HUGETLB_PAGE
 9struct pud_huge_patch_entry {
10	unsigned int addr;
11	unsigned int insn;
12};
13extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
14#endif
15
16void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
17		     pte_t *ptep, pte_t pte);
18
19pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
20			      pte_t *ptep);
21
 
 
22static inline int is_hugepage_only_range(struct mm_struct *mm,
23					 unsigned long addr,
24					 unsigned long len) {
25	return 0;
26}
27
28/*
29 * If the arch doesn't supply something else, assume that hugepage
30 * size aligned regions are ok without further preparation.
31 */
32static inline int prepare_hugepage_range(struct file *file,
33			unsigned long addr, unsigned long len)
34{
35	struct hstate *h = hstate_file(file);
36
37	if (len & ~huge_page_mask(h))
38		return -EINVAL;
39	if (addr & ~huge_page_mask(h))
40		return -EINVAL;
41	return 0;
42}
43
 
 
 
 
 
 
 
 
44static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
45					 unsigned long addr, pte_t *ptep)
46{
47}
48
49static inline int huge_pte_none(pte_t pte)
50{
51	return pte_none(pte);
52}
53
54static inline pte_t huge_pte_wrprotect(pte_t pte)
55{
56	return pte_wrprotect(pte);
57}
58
59static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
60					   unsigned long addr, pte_t *ptep)
61{
62	pte_t old_pte = *ptep;
63	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
64}
65
66static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
67					     unsigned long addr, pte_t *ptep,
68					     pte_t pte, int dirty)
69{
70	int changed = !pte_same(*ptep, pte);
71	if (changed) {
72		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
73		flush_tlb_page(vma, addr);
74	}
75	return changed;
76}
77
78static inline pte_t huge_ptep_get(pte_t *ptep)
79{
80	return *ptep;
81}
82
83static inline void arch_clear_hugepage_flags(struct page *page)
84{
 
85}
86
87void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
88			    unsigned long end, unsigned long floor,
89			    unsigned long ceiling);
90
91#endif /* _ASM_SPARC64_HUGETLB_H */

 
 1#ifndef _ASM_SPARC64_HUGETLB_H
 2#define _ASM_SPARC64_HUGETLB_H
 3
 4#include <asm/page.h>
 
 5
 
 
 
 
 
 
 
 6
 7void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 8		     pte_t *ptep, pte_t pte);
 9
10pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
11			      pte_t *ptep);
12
13void hugetlb_prefault_arch_hook(struct mm_struct *mm);
14
15static inline int is_hugepage_only_range(struct mm_struct *mm,
16					 unsigned long addr,
17					 unsigned long len) {
18	return 0;
19}
20
21/*
22 * If the arch doesn't supply something else, assume that hugepage
23 * size aligned regions are ok without further preparation.
24 */
25static inline int prepare_hugepage_range(struct file *file,
26			unsigned long addr, unsigned long len)
27{
28	if (len & ~HPAGE_MASK)
 
 
29		return -EINVAL;
30	if (addr & ~HPAGE_MASK)
31		return -EINVAL;
32	return 0;
33}
34
35static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
36					  unsigned long addr, unsigned long end,
37					  unsigned long floor,
38					  unsigned long ceiling)
39{
40	free_pgd_range(tlb, addr, end, floor, ceiling);
41}
42
43static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
44					 unsigned long addr, pte_t *ptep)
45{
46}
47
48static inline int huge_pte_none(pte_t pte)
49{
50	return pte_none(pte);
51}
52
53static inline pte_t huge_pte_wrprotect(pte_t pte)
54{
55	return pte_wrprotect(pte);
56}
57
58static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
59					   unsigned long addr, pte_t *ptep)
60{
61	ptep_set_wrprotect(mm, addr, ptep);
 
62}
63
64static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
65					     unsigned long addr, pte_t *ptep,
66					     pte_t pte, int dirty)
67{
68	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
 
 
 
 
 
69}
70
71static inline pte_t huge_ptep_get(pte_t *ptep)
72{
73	return *ptep;
74}
75
76static inline int arch_prepare_hugepage(struct page *page)
77{
78	return 0;
79}
80
81static inline void arch_release_hugepage(struct page *page)
82{
83}
84
85#endif /* _ASM_SPARC64_HUGETLB_H */