Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 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 */ |
Cornelia Huck | ddda374 | 2020-02-18 15:44:59 +0100 | [diff] [blame] | 14 | /* 0x10 reserved for arch-specific use */ |
| 15 | /* 0x20 reserved for arch-specific use */ |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 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 | |
Cornelia Huck | d9cb433 | 2019-05-16 19:10:36 +0200 | [diff] [blame] | 20 | /* 0x01 - 0x03 are defined in linux/mman.h */ |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 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 */ |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 24 | |
Eric Auger | f363d03 | 2019-10-03 17:46:38 +0200 | [diff] [blame] | 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 */ |
| 30 | #define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */ |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 31 | #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */ |
| 32 | |
Eric Auger | f363d03 | 2019-10-03 17:46:38 +0200 | [diff] [blame] | 33 | #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be |
| 34 | * uninitialized */ |
| 35 | |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 36 | /* |
| 37 | * Flags for mlock |
| 38 | */ |
| 39 | #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ |
| 40 | |
| 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 */ |
| 52 | #define MADV_FREE 8 /* free pages only if memory pressure */ |
| 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 */ |
| 56 | #define MADV_HWPOISON 100 /* poison a page for testing */ |
| 57 | #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ |
| 58 | |
| 59 | #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
| 60 | #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ |
| 61 | |
| 62 | #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
| 63 | #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
| 64 | |
| 65 | #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, |
| 66 | overrides the coredump filter bits */ |
| 67 | #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ |
| 68 | |
| 69 | #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ |
| 70 | #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ |
| 71 | |
Eric Auger | f363d03 | 2019-10-03 17:46:38 +0200 | [diff] [blame] | 72 | #define MADV_COLD 20 /* deactivate these pages */ |
| 73 | #define MADV_PAGEOUT 21 /* reclaim these pages */ |
| 74 | |
Zhang Yi | 8cf108c | 2019-02-08 18:11:00 +0800 | [diff] [blame] | 75 | /* compatibility flags */ |
| 76 | #define MAP_FILE 0 |
| 77 | |
| 78 | #define PKEY_DISABLE_ACCESS 0x1 |
| 79 | #define PKEY_DISABLE_WRITE 0x2 |
| 80 | #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ |
| 81 | PKEY_DISABLE_WRITE) |
| 82 | |
| 83 | #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |