| Steve Capper | 084bd29 | 2013-04-10 13:48:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm64/include/asm/hugetlb.h |
| 3 | * |
| 4 | * Copyright (C) 2013 Linaro Ltd. |
| 5 | * |
| 6 | * Based on arch/x86/include/asm/hugetlb.h |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| Steve Capper | 084bd29 | 2013-04-10 13:48:00 +0100 | [diff] [blame] | 16 | */ |
| 17 | |
| 18 | #ifndef __ASM_HUGETLB_H |
| 19 | #define __ASM_HUGETLB_H |
| 20 | |
| 21 | #include <asm-generic/hugetlb.h> |
| 22 | #include <asm/page.h> |
| 23 | |
| 24 | static inline pte_t huge_ptep_get(pte_t *ptep) |
| 25 | { |
| 26 | return *ptep; |
| 27 | } |
| 28 | |
| 29 | static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, |
| 30 | pte_t *ptep, pte_t pte) |
| 31 | { |
| 32 | set_pte_at(mm, addr, ptep, pte); |
| 33 | } |
| 34 | |
| 35 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, |
| 36 | unsigned long addr, pte_t *ptep) |
| 37 | { |
| 38 | ptep_clear_flush(vma, addr, ptep); |
| 39 | } |
| 40 | |
| 41 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, |
| 42 | unsigned long addr, pte_t *ptep) |
| 43 | { |
| 44 | ptep_set_wrprotect(mm, addr, ptep); |
| 45 | } |
| 46 | |
| 47 | static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, |
| 48 | unsigned long addr, pte_t *ptep) |
| 49 | { |
| 50 | return ptep_get_and_clear(mm, addr, ptep); |
| 51 | } |
| 52 | |
| 53 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, |
| 54 | unsigned long addr, pte_t *ptep, |
| 55 | pte_t pte, int dirty) |
| 56 | { |
| 57 | return ptep_set_access_flags(vma, addr, ptep, pte, dirty); |
| 58 | } |
| 59 | |
| 60 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, |
| 61 | unsigned long addr, unsigned long end, |
| 62 | unsigned long floor, |
| 63 | unsigned long ceiling) |
| 64 | { |
| 65 | free_pgd_range(tlb, addr, end, floor, ceiling); |
| 66 | } |
| 67 | |
| 68 | static inline int is_hugepage_only_range(struct mm_struct *mm, |
| 69 | unsigned long addr, unsigned long len) |
| 70 | { |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static inline int prepare_hugepage_range(struct file *file, |
| 75 | unsigned long addr, unsigned long len) |
| 76 | { |
| 77 | struct hstate *h = hstate_file(file); |
| 78 | if (len & ~huge_page_mask(h)) |
| 79 | return -EINVAL; |
| 80 | if (addr & ~huge_page_mask(h)) |
| 81 | return -EINVAL; |
| 82 | return 0; |
| 83 | } |
| 84 | |
| Steve Capper | 084bd29 | 2013-04-10 13:48:00 +0100 | [diff] [blame] | 85 | static inline int huge_pte_none(pte_t pte) |
| 86 | { |
| 87 | return pte_none(pte); |
| 88 | } |
| 89 | |
| 90 | static inline pte_t huge_pte_wrprotect(pte_t pte) |
| 91 | { |
| 92 | return pte_wrprotect(pte); |
| 93 | } |
| 94 | |
| Steve Capper | 084bd29 | 2013-04-10 13:48:00 +0100 | [diff] [blame] | 95 | static inline void arch_clear_hugepage_flags(struct page *page) |
| 96 | { |
| 97 | clear_bit(PG_dcache_clean, &page->flags); |
| 98 | } |
| 99 | |
| 100 | #endif /* __ASM_HUGETLB_H */ |
