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);
18
19#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
20pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
21			      pte_t *ptep);
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
30#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
31static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
32					   unsigned long addr, pte_t *ptep)
33{
34	pte_t old_pte = *ptep;
35	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
36}
37
38#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
39static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
40					     unsigned long addr, pte_t *ptep,
41					     pte_t pte, int dirty)
42{
43	int changed = !pte_same(*ptep, pte);
44	if (changed) {
45		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
46		flush_tlb_page(vma, addr);
47	}
48	return changed;
49}
50
51#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
52void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
53			    unsigned long end, unsigned long floor,
54			    unsigned long ceiling);
55
56#include <asm-generic/hugetlb.h>
 
 
57
58#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 hugetlb_free_pgd_range(struct mmu_gather *tlb,
35					  unsigned long addr, unsigned long end,
36					  unsigned long floor,
37					  unsigned long ceiling)
38{
39	free_pgd_range(tlb, addr, end, floor, ceiling);
40}
41
42static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
43					 unsigned long addr, pte_t *ptep)
44{
45}
46
47static inline int huge_pte_none(pte_t pte)
48{
49	return pte_none(pte);
50}
51
52static inline pte_t huge_pte_wrprotect(pte_t pte)
53{
54	return pte_wrprotect(pte);
55}
56
 
57static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
58					   unsigned long addr, pte_t *ptep)
59{
60	pte_t old_pte = *ptep;
61	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
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	int changed = !pte_same(*ptep, pte);
69	if (changed) {
70		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
71		flush_tlb_page(vma, addr);
72	}
73	return changed;
74}
75
76static inline pte_t huge_ptep_get(pte_t *ptep)
77{
78	return *ptep;
79}
80
81static inline void arch_clear_hugepage_flags(struct page *page)
82{
83}
84
85#endif /* _ASM_SPARC64_HUGETLB_H */