projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1355e2a6 CM |
1 | /* |
| 2 | * arch/arm/include/asm/hugetlb-3level.h | |
| 3 | * | |
| 4 | * Copyright (C) 2012 ARM 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. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef _ASM_ARM_HUGETLB_3LEVEL_H | |
| 23 | #define _ASM_ARM_HUGETLB_3LEVEL_H | |
| 24 | ||
| 25 | ||
| 26 | /* | |
| 27 | * If our huge pte is non-zero then mark the valid bit. | |
| 28 | * This allows pte_present(huge_ptep_get(ptep)) to return true for non-zero | |
| 29 | * ptes. | |
| 30 | * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes). | |
| 31 | */ | |
| 32 | static inline pte_t huge_ptep_get(pte_t *ptep) | |
| 33 | { | |
| 34 | pte_t retval = *ptep; | |
| 35 | if (pte_val(retval)) | |
| 36 | pte_val(retval) |= L_PTE_VALID; | |
| 37 | return retval; | |
| 38 | } | |
| 39 | ||
| 40 | static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
| 41 | pte_t *ptep, pte_t pte) | |
| 42 | { | |
| 43 | set_pte_at(mm, addr, ptep, pte); | |
| 44 | } | |
| 45 | ||
| 46 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, | |
| 47 | unsigned long addr, pte_t *ptep) | |
| 48 | { | |
| 49 | ptep_clear_flush(vma, addr, ptep); | |
| 50 | } | |
| 51 | ||
| 52 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
| 53 | unsigned long addr, pte_t *ptep) | |
| 54 | { | |
| 55 | ptep_set_wrprotect(mm, addr, ptep); | |
| 56 | } | |
| 57 | ||
| 58 | static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, | |
| 59 | unsigned long addr, pte_t *ptep) | |
| 60 | { | |
| 61 | return ptep_get_and_clear(mm, addr, ptep); | |
| 62 | } | |
| 63 | ||
| 64 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
| 65 | unsigned long addr, pte_t *ptep, | |
| 66 | pte_t pte, int dirty) | |
| 67 | { | |
| 68 | return ptep_set_access_flags(vma, addr, ptep, pte, dirty); | |
| 69 | } | |
| 70 | ||
| 71 | #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */ |