hugetlb: introduce generic version of prepare_hugepage_range
[muen/linux.git] / arch / ia64 / include / asm / hugetlb.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_IA64_HUGETLB_H
3 #define _ASM_IA64_HUGETLB_H
4
5 #include <asm/page.h>
6
7 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
8 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
9                             unsigned long end, unsigned long floor,
10                             unsigned long ceiling);
11
12 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
13 int prepare_hugepage_range(struct file *file,
14                         unsigned long addr, unsigned long len);
15
16 static inline int is_hugepage_only_range(struct mm_struct *mm,
17                                          unsigned long addr,
18                                          unsigned long len)
19 {
20         return (REGION_NUMBER(addr) == RGN_HPAGE ||
21                 REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
22 }
23
24 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
25 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
26                                          unsigned long addr, pte_t *ptep)
27 {
28 }
29
30 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
31                                            unsigned long addr, pte_t *ptep)
32 {
33         ptep_set_wrprotect(mm, addr, ptep);
34 }
35
36 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
37                                              unsigned long addr, pte_t *ptep,
38                                              pte_t pte, int dirty)
39 {
40         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
41 }
42
43 static inline pte_t huge_ptep_get(pte_t *ptep)
44 {
45         return *ptep;
46 }
47
48 static inline void arch_clear_hugepage_flags(struct page *page)
49 {
50 }
51
52 #include <asm-generic/hugetlb.h>
53
54 #endif /* _ASM_IA64_HUGETLB_H */