1 #ifndef _ASM_SPARC64_HUGETLB_H
2 #define _ASM_SPARC64_HUGETLB_H
3
4 #include <asm/page.h>
5
6
7 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
8 pte_t *ptep, pte_t pte);
9
10 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
11 pte_t *ptep);
12
13 void hugetlb_prefault_arch_hook(struct mm_struct *mm);
14
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)15 static 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 */
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)25 static 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
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)35 static 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
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)43 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
44 unsigned long addr, pte_t *ptep)
45 {
46 }
47
huge_pte_none(pte_t pte)48 static inline int huge_pte_none(pte_t pte)
49 {
50 return pte_none(pte);
51 }
52
huge_pte_wrprotect(pte_t pte)53 static inline pte_t huge_pte_wrprotect(pte_t pte)
54 {
55 return pte_wrprotect(pte);
56 }
57
huge_ptep_set_wrprotect(struct mm_struct * mm,unsigned long addr,pte_t * ptep)58 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
59 unsigned long addr, pte_t *ptep)
60 {
61 pte_t old_pte = *ptep;
62 set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
63 }
64
huge_ptep_set_access_flags(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep,pte_t pte,int dirty)65 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
66 unsigned long addr, pte_t *ptep,
67 pte_t pte, int dirty)
68 {
69 int changed = !pte_same(*ptep, pte);
70 if (changed) {
71 set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
72 flush_tlb_page(vma, addr);
73 }
74 return changed;
75 }
76
huge_ptep_get(pte_t * ptep)77 static inline pte_t huge_ptep_get(pte_t *ptep)
78 {
79 return *ptep;
80 }
81
arch_prepare_hugepage(struct page * page)82 static inline int arch_prepare_hugepage(struct page *page)
83 {
84 return 0;
85 }
86
arch_release_hugepage(struct page * page)87 static inline void arch_release_hugepage(struct page *page)
88 {
89 }
90
91 #endif /* _ASM_SPARC64_HUGETLB_H */
92