hugetlb: introduce generic version of set_huge_pte_at()
[muen/linux.git] / arch / parisc / include / asm / hugetlb.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_PARISC64_HUGETLB_H
3 #define _ASM_PARISC64_HUGETLB_H
4
5 #include <asm/page.h>
6
7 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
8 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
9                      pte_t *ptep, pte_t pte);
10
11 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
12                               pte_t *ptep);
13
14 static 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  */
24 static 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
34 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
35                                          unsigned long addr, pte_t *ptep)
36 {
37 }
38
39 static inline int huge_pte_none(pte_t pte)
40 {
41         return pte_none(pte);
42 }
43
44 static inline pte_t huge_pte_wrprotect(pte_t pte)
45 {
46         return pte_wrprotect(pte);
47 }
48
49 void huge_ptep_set_wrprotect(struct mm_struct *mm,
50                                            unsigned long addr, pte_t *ptep);
51
52 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
53                                              unsigned long addr, pte_t *ptep,
54                                              pte_t pte, int dirty);
55
56 static inline pte_t huge_ptep_get(pte_t *ptep)
57 {
58         return *ptep;
59 }
60
61 static inline void arch_clear_hugepage_flags(struct page *page)
62 {
63 }
64
65 #include <asm-generic/hugetlb.h>
66
67 #endif /* _ASM_PARISC64_HUGETLB_H */