projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| fb7df12d | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| f3539c12 WN |
2 | #ifndef __ASM_GENERIC_MMAN_COMMON_H |
| 3 | #define __ASM_GENERIC_MMAN_COMMON_H | |
| 4 | ||
| 5 | /* | |
| 6 | Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd. | |
| 7 | Based on: asm-xxx/mman.h | |
| 8 | */ | |
| 9 | ||
| 10 | #define PROT_READ 0x1 /* page can be read */ | |
| 11 | #define PROT_WRITE 0x2 /* page can be written */ | |
| 12 | #define PROT_EXEC 0x4 /* page can be executed */ | |
| 13 | #define PROT_SEM 0x8 /* page may be used for atomic ops */ | |
| 14 | #define PROT_NONE 0x0 /* page can not be accessed */ | |
| 15 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | |
| 16 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ | |
| 17 | ||
| 18 | #define MAP_SHARED 0x01 /* Share changes */ | |
| 19 | #define MAP_PRIVATE 0x02 /* Changes are private */ | |
| 20 | #define MAP_TYPE 0x0f /* Mask for type of mapping */ | |
| 21 | #define MAP_FIXED 0x10 /* Interpret addr exactly */ | |
| 22 | #define MAP_ANONYMOUS 0x20 /* don't use a file */ | |
| 23 | #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED | |
| 24 | # define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */ | |
| 25 | #else | |
| 26 | # define MAP_UNINITIALIZED 0x0 /* Don't support this flag */ | |
| 27 | #endif | |
| 28 | ||
| 29 | /* | |
| 30 | * Flags for mlock | |
| 31 | */ | |
| 32 | #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ | |
| 33 | ||
| 34 | #define MS_ASYNC 1 /* sync memory asynchronously */ | |
| 35 | #define MS_INVALIDATE 2 /* invalidate the caches */ | |
| 36 | #define MS_SYNC 4 /* synchronous memory sync */ | |
| 37 | ||
| 38 | #define MADV_NORMAL 0 /* no further special treatment */ | |
| 39 | #define MADV_RANDOM 1 /* expect random page references */ | |
| 40 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
| 41 | #define MADV_WILLNEED 3 /* will need these pages */ | |
| 42 | #define MADV_DONTNEED 4 /* don't need these pages */ | |
| 43 | ||
| 44 | /* common parameters: try to keep these consistent across architectures */ | |
| 45 | #define MADV_FREE 8 /* free pages only if memory pressure */ | |
| 46 | #define MADV_REMOVE 9 /* remove these pages & resources */ | |
| 47 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | |
| 48 | #define MADV_DOFORK 11 /* do inherit across fork */ | |
| 49 | #define MADV_HWPOISON 100 /* poison a page for testing */ | |
| 50 | #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ | |
| 51 | ||
| 52 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ | |
| 53 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | |
| 54 | ||
| 55 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ | |
| 56 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ | |
| 57 | ||
| 58 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, | |
| 59 | overrides the coredump filter bits */ | |
| 60 | #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ | |
| 61 | ||
| 549a3976 IM |
62 | #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ |
| 63 | #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ | |
| 64 | ||
| f3539c12 WN |
65 | /* compatibility flags */ |
| 66 | #define MAP_FILE 0 | |
| 67 | ||
| 0fb75c8c ACM |
68 | #define PKEY_DISABLE_ACCESS 0x1 |
| 69 | #define PKEY_DISABLE_WRITE 0x2 | |
| 70 | #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ | |
| 71 | PKEY_DISABLE_WRITE) | |
| 72 | ||
| f3539c12 | 73 | #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |