projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1d18c47c CM |
1 | /* |
| 2 | * Based on arch/arm/include/asm/page.h | |
| 3 | * | |
| 4 | * Copyright (C) 1995-2003 Russell King | |
| 5 | * Copyright (C) 2012 ARM Ltd. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 | */ | |
| 19 | #ifndef __ASM_PAGE_H | |
| 20 | #define __ASM_PAGE_H | |
| 21 | ||
| 22 | /* PAGE_SHIFT determines the page size */ | |
| 2ff4439b | 23 | /* CONT_SHIFT determines the number of pages which can be tracked together */ |
| 1d18c47c CM |
24 | #ifdef CONFIG_ARM64_64K_PAGES |
| 25 | #define PAGE_SHIFT 16 | |
| 2ff4439b | 26 | #define CONT_SHIFT 5 |
| 44eaacf1 SP |
27 | #elif defined(CONFIG_ARM64_16K_PAGES) |
| 28 | #define PAGE_SHIFT 14 | |
| 29 | #define CONT_SHIFT 7 | |
| 1d18c47c CM |
30 | #else |
| 31 | #define PAGE_SHIFT 12 | |
| 2ff4439b | 32 | #define CONT_SHIFT 4 |
| 1d18c47c | 33 | #endif |
| 2ff4439b | 34 | #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) |
| 1d18c47c CM |
35 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
| 36 | ||
| 2ff4439b JL |
37 | #define CONT_SIZE (_AC(1, UL) << (CONT_SHIFT + PAGE_SHIFT)) |
| 38 | #define CONT_MASK (~(CONT_SIZE-1)) | |
| 39 | ||
| 1d18c47c CM |
40 | #ifndef __ASSEMBLY__ |
| 41 | ||
| 3e275c64 | 42 | #include <linux/personality.h> /* for READ_IMPLIES_EXEC */ |
| 0f174025 | 43 | #include <asm/pgtable-types.h> |
| 1d18c47c CM |
44 | |
| 45 | extern void __cpu_clear_user_page(void *p, unsigned long user); | |
| 46 | extern void __cpu_copy_user_page(void *to, const void *from, | |
| 47 | unsigned long user); | |
| 48 | extern void copy_page(void *to, const void *from); | |
| 49 | extern void clear_page(void *to); | |
| 50 | ||
| 51 | #define clear_user_page(addr,vaddr,pg) __cpu_clear_user_page(addr, vaddr) | |
| 52 | #define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr) | |
| 53 | ||
| 54 | typedef struct page *pgtable_t; | |
| 55 | ||
| 56 | #ifdef CONFIG_HAVE_ARCH_PFN_VALID | |
| 57 | extern int pfn_valid(unsigned long); | |
| 58 | #endif | |
| 59 | ||
| 60 | #include <asm/memory.h> | |
| 61 | ||
| 62 | #endif /* !__ASSEMBLY__ */ | |
| 63 | ||
| 64 | #define VM_DATA_DEFAULT_FLAGS \ | |
| 65 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ | |
| 66 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
| 67 | ||
| 68 | #include <asm-generic/getorder.h> | |
| 69 | ||
| 70 | #endif |