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