| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 | #include <asm-generic/hugetlb.h> |
| 7 | |
| 8 | |
| 9 | void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| 10 | pte_t *ptep, pte_t pte); |
| 11 | |
| 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 | 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 | |
| 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 | |
| 43 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
| 44 | unsigned long addr, pte_t *ptep) |
| 45 | { |
| 46 | } |
| 47 | |
| 48 | static inline int huge_pte_none(pte_t pte) |
| 49 | { |
| 50 | return pte_none(pte); |
| 51 | } |
| 52 | |
| 53 | static inline pte_t huge_pte_wrprotect(pte_t pte) |
| 54 | { |
| 55 | return pte_wrprotect(pte); |
| 56 | } |
| 57 | |
| 58 | void huge_ptep_set_wrprotect(struct mm_struct *mm, |
| 59 | unsigned long addr, pte_t *ptep); |
| 60 | |
| 61 | int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| 62 | unsigned long addr, pte_t *ptep, |
| 63 | pte_t pte, int dirty); |
| 64 | |
| 65 | static inline pte_t huge_ptep_get(pte_t *ptep) |
| 66 | { |
| 67 | return *ptep; |
| 68 | } |
| 69 | |
| 70 | static inline void arch_clear_hugepage_flags(struct page *page) |
| 71 | { |
| 72 | } |
| 73 | |
| 74 | #endif /* _ASM_PARISC64_HUGETLB_H */ |