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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
63b852a6 AB |
2 | #ifndef __ASM_GENERIC_MMAN_COMMON_H |
3 | #define __ASM_GENERIC_MMAN_COMMON_H | |
5f6164f3 MT |
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 */ | |
d41938d2 DM |
14 | /* 0x10 reserved for arch-specific use */ |
15 | /* 0x20 reserved for arch-specific use */ | |
5f6164f3 MT |
16 | #define PROT_NONE 0x0 /* page can not be accessed */ |
17 | #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ | |
18 | #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ | |
19 | ||
746c9398 | 20 | /* 0x01 - 0x03 are defined in linux/mman.h */ |
5f6164f3 MT |
21 | #define MAP_TYPE 0x0f /* Mask for type of mapping */ |
22 | #define MAP_FIXED 0x10 /* Interpret addr exactly */ | |
23 | #define MAP_ANONYMOUS 0x20 /* don't use a file */ | |
4ed28639 | 24 | |
8aa3c927 AK |
25 | /* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */ |
26 | #define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */ | |
27 | #define MAP_NONBLOCK 0x010000 /* do not block on IO */ | |
28 | #define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */ | |
29 | #define MAP_HUGETLB 0x040000 /* create a huge page mapping */ | |
22fcea6f | 30 | #define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */ |
4ed28639 | 31 | #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */ |
5f6164f3 | 32 | |
0bf5f949 CH |
33 | #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be |
34 | * uninitialized */ | |
35 | ||
b0f205c2 EM |
36 | /* |
37 | * Flags for mlock | |
38 | */ | |
39 | #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ | |
40 | ||
5f6164f3 MT |
41 | #define MS_ASYNC 1 /* sync memory asynchronously */ |
42 | #define MS_INVALIDATE 2 /* invalidate the caches */ | |
43 | #define MS_SYNC 4 /* synchronous memory sync */ | |
44 | ||
45 | #define MADV_NORMAL 0 /* no further special treatment */ | |
46 | #define MADV_RANDOM 1 /* expect random page references */ | |
47 | #define MADV_SEQUENTIAL 2 /* expect sequential page references */ | |
48 | #define MADV_WILLNEED 3 /* will need these pages */ | |
49 | #define MADV_DONTNEED 4 /* don't need these pages */ | |
50 | ||
51 | /* common parameters: try to keep these consistent across architectures */ | |
21f55b01 | 52 | #define MADV_FREE 8 /* free pages only if memory pressure */ |
5f6164f3 MT |
53 | #define MADV_REMOVE 9 /* remove these pages & resources */ |
54 | #define MADV_DONTFORK 10 /* don't inherit across fork */ | |
55 | #define MADV_DOFORK 11 /* do inherit across fork */ | |
9893e49d | 56 | #define MADV_HWPOISON 100 /* poison a page for testing */ |
afcf938e | 57 | #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ |
5f6164f3 | 58 | |
d19f3524 HD |
59 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
60 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ | |
61 | ||
a826e422 | 62 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
1ddd6db4 | 63 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
a826e422 | 64 | |
accb61fe JB |
65 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, |
66 | overrides the coredump filter bits */ | |
85892f19 | 67 | #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ |
accb61fe | 68 | |
d2cd9ede RR |
69 | #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ |
70 | #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ | |
71 | ||
9c276cc6 | 72 | #define MADV_COLD 20 /* deactivate these pages */ |
1a4e58cc | 73 | #define MADV_PAGEOUT 21 /* reclaim these pages */ |
9c276cc6 | 74 | |
4ca9b385 DH |
75 | #define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */ |
76 | #define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */ | |
77 | ||
9457056a JW |
78 | #define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */ |
79 | ||
5f6164f3 | 80 | /* compatibility flags */ |
5f6164f3 MT |
81 | #define MAP_FILE 0 |
82 | ||
e8c24d3a DH |
83 | #define PKEY_DISABLE_ACCESS 0x1 |
84 | #define PKEY_DISABLE_WRITE 0x2 | |
85 | #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ | |
86 | PKEY_DISABLE_WRITE) | |
87 | ||
63b852a6 | 88 | #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |