xref: /openbmc/linux/arch/sh/include/asm/hugetlb.h (revision 8fa5723aa7e053d498336b48448b292fc2e0458b) 
1 #ifndef _ASM_SH_HUGETLB_H
2 #define _ASM_SH_HUGETLB_H
3 
4 #include <asm/page.h>
5 
6 
7 static inline int is_hugepage_only_range(struct mm_struct *mm,
8 					 unsigned long addr,
9 					 unsigned long len) {
10 	return 0;
11 }
12 
13 /*
14  * If the arch doesn't supply something else, assume that hugepage
15  * size aligned regions are ok without further preparation.
16  */
17 static inline int prepare_hugepage_range(struct file *file,
18 			unsigned long addr, unsigned long len)
19 {
20 	if (len & ~HPAGE_MASK)
21 		return -EINVAL;
22 	if (addr & ~HPAGE_MASK)
23 		return -EINVAL;
24 	return 0;
25 }
26 
27 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
28 }
29 
30 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
31 					  unsigned long addr, unsigned long end,
32 					  unsigned long floor,
33 					  unsigned long ceiling)
34 {
35 	free_pgd_range(tlb, addr, end, floor, ceiling);
36 }
37 
38 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
39 				   pte_t *ptep, pte_t pte)
40 {
41 	set_pte_at(mm, addr, ptep, pte);
42 }
43 
44 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
45 					    unsigned long addr, pte_t *ptep)
46 {
47 	return ptep_get_and_clear(mm, addr, ptep);
48 }
49 
50 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
51 					 unsigned long addr, pte_t *ptep)
52 {
53 }
54 
55 static inline int huge_pte_none(pte_t pte)
56 {
57 	return pte_none(pte);
58 }
59 
60 static inline pte_t huge_pte_wrprotect(pte_t pte)
61 {
62 	return pte_wrprotect(pte);
63 }
64 
65 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
66 					   unsigned long addr, pte_t *ptep)
67 {
68 	ptep_set_wrprotect(mm, addr, ptep);
69 }
70 
71 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
72 					     unsigned long addr, pte_t *ptep,
73 					     pte_t pte, int dirty)
74 {
75 	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
76 }
77 
78 static inline pte_t huge_ptep_get(pte_t *ptep)
79 {
80 	return *ptep;
81 }
82 
83 static inline int arch_prepare_hugepage(struct page *page)
84 {
85 	return 0;
86 }
87 
88 static inline void arch_release_hugepage(struct page *page)
89 {
90 }
91 
92 #endif /* _ASM_SH_HUGETLB_H */
93