fb7e0fd858a37ff50364602f61533f191a4f8b0c
[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 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
12 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
13                               pte_t *ptep);
14
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  */
25 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
26 static inline int prepare_hugepage_range(struct file *file,
27                         unsigned long addr, unsigned long len)
28 {
29         if (len & ~HPAGE_MASK)
30                 return -EINVAL;
31         if (addr & ~HPAGE_MASK)
32                 return -EINVAL;
33         return 0;
34 }
35
36 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
37 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
38                                          unsigned long addr, pte_t *ptep)
39 {
40 }
41
42 void huge_ptep_set_wrprotect(struct mm_struct *mm,
43                                            unsigned long addr, pte_t *ptep);
44
45 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
46                                              unsigned long addr, pte_t *ptep,
47                                              pte_t pte, int dirty);
48
49 static inline pte_t huge_ptep_get(pte_t *ptep)
50 {
51         return *ptep;
52 }
53
54 static inline void arch_clear_hugepage_flags(struct page *page)
55 {
56 }
57
58 #include <asm-generic/hugetlb.h>
59
60 #endif /* _ASM_PARISC64_HUGETLB_H */