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 void hugetlb_prefault_arch_hook(struct mm_struct *mm)
15{
16}
17
18static inline int is_hugepage_only_range(struct mm_struct *mm,
19					 unsigned long addr,
20					 unsigned long len) {
21	return 0;
22}
23
24/*
25 * If the arch doesn't supply something else, assume that hugepage
26 * size aligned regions are ok without further preparation.
27 */
28static inline int prepare_hugepage_range(struct file *file,
29			unsigned long addr, unsigned long len)
30{
31	if (len & ~HPAGE_MASK)
32		return -EINVAL;
33	if (addr & ~HPAGE_MASK)
34		return -EINVAL;
35	return 0;
36}
37
38static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
39					  unsigned long addr, unsigned long end,
40					  unsigned long floor,
41					  unsigned long ceiling)
42{
43	free_pgd_range(tlb, addr, end, floor, ceiling);
44}
45
46static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
47					 unsigned long addr, pte_t *ptep)
48{
49}
50
51static inline int huge_pte_none(pte_t pte)
52{
53	return pte_none(pte);
54}
55
56static inline pte_t huge_pte_wrprotect(pte_t pte)
57{
58	return pte_wrprotect(pte);
59}
60
61static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
62					   unsigned long addr, pte_t *ptep)
63{
64	pte_t old_pte = *ptep;
65	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
66}
67
68static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
69					     unsigned long addr, pte_t *ptep,
70					     pte_t pte, int dirty)
71{
72	int changed = !pte_same(*ptep, pte);
73	if (changed) {
74		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
75		flush_tlb_page(vma, addr);
76	}
77	return changed;
78}
79
80static inline pte_t huge_ptep_get(pte_t *ptep)
81{
82	return *ptep;
83}
84
85static inline int arch_prepare_hugepage(struct page *page)
86{
87	return 0;
88}
89
90static inline void arch_release_hugepage(struct page *page)
91{
92}
93
94static inline void arch_clear_hugepage_flags(struct page *page)
95{
96}
97
98#endif /* _ASM_SPARC64_HUGETLB_H */
99