]>
Commit | Line | Data |
---|---|---|
8cf108c5 ZY |
1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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 | ||
d9cb4336 | 18 | /* 0x01 - 0x03 are defined in linux/mman.h */ |
8cf108c5 ZY |
19 | #define MAP_TYPE 0x0f /* Mask for type of mapping */ |
20 | #define MAP_FIXED 0x10 /* Interpret addr exactly */ | |
21 | #define MAP_ANONYMOUS 0x20 /* don't use a file */ | |
22 | #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED | |
23 | # define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */ | |
24 | #else | |
25 | # define MAP_UNINITIALIZED 0x0 /* Don't support this flag */ | |
26 | #endif | |
27 | ||
28 | /* 0x0100 - 0x80000 flags are defined in asm-generic/mman.h */ | |
29 | #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */ | |
30 | ||
31 | /* | |
32 | * Flags for mlock | |
33 | */ | |
34 | #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ | |
35 | ||
36 | #define MS_ASYNC 1 /* sync memory asynchronously */ | |
37 | #define MS_INVALIDATE 2 /* invalidate the caches */ | |
38 | #define MS_SYNC 4 /* synchronous memory sync */ | |
39 | ||
40 | #define MADV_NORMAL 0 /* no further special treatment */ | |
41 | #define MADV_RANDOM 1 /* expect random page references */ | |
42 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
43 | #define MADV_WILLNEED 3 /* will need these pages */ | |
44 | #define MADV_DONTNEED 4 /* don't need these pages */ | |
45 | ||
46 | /* common parameters: try to keep these consistent across architectures */ | |
47 | #define MADV_FREE 8 /* free pages only if memory pressure */ | |
48 | #define MADV_REMOVE 9 /* remove these pages & resources */ | |
49 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | |
50 | #define MADV_DOFORK 11 /* do inherit across fork */ | |
51 | #define MADV_HWPOISON 100 /* poison a page for testing */ | |
52 | #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ | |
53 | ||
54 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ | |
55 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | |
56 | ||
57 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ | |
58 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ | |
59 | ||
60 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, | |
61 | overrides the coredump filter bits */ | |
62 | #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ | |
63 | ||
64 | #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ | |
65 | #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ | |
66 | ||
67 | /* compatibility flags */ | |
68 | #define MAP_FILE 0 | |
69 | ||
70 | #define PKEY_DISABLE_ACCESS 0x1 | |
71 | #define PKEY_DISABLE_WRITE 0x2 | |
72 | #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ | |
73 | PKEY_DISABLE_WRITE) | |
74 | ||
75 | #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |