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/* 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
 7#ifdef CONFIG_HUGETLB_PAGE
 8struct pud_huge_patch_entry {
 9	unsigned int addr;
10	unsigned int insn;
11};
12extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
13#endif
14
15#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
16void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
17		     pte_t *ptep, pte_t pte, unsigned long sz);
18void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
19		     pte_t *ptep, pte_t pte);
20
21#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
22pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
23			      pte_t *ptep);
24
25#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
26static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
27					  unsigned long addr, pte_t *ptep)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
28{
29	return *ptep;
 
 
 
 
 
30}
31
32#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
33static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
34					   unsigned long addr, pte_t *ptep)
35{
36	pte_t old_pte = *ptep;
37	__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
38}
39
40#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
41static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
42					     unsigned long addr, pte_t *ptep,
43					     pte_t pte, int dirty)
44{
45	int changed = !pte_same(*ptep, pte);
46	if (changed) {
47		__set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
48		flush_tlb_page(vma, addr);
49	}
50	return changed;
51}
52
53#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 
 
 
 
 
 
 
 
54void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
55			    unsigned long end, unsigned long floor,
56			    unsigned long ceiling);
57
58#include <asm-generic/hugetlb.h>
59
60#endif /* _ASM_SPARC64_HUGETLB_H */