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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef __ALPHA_MMAN_H__
3#define __ALPHA_MMAN_H__
4
5#define PROT_READ 0x1 /* page can be read */
6#define PROT_WRITE 0x2 /* page can be written */
7#define PROT_EXEC 0x4 /* page can be executed */
8#define PROT_SEM 0x8 /* page may be used for atomic ops */
9#define PROT_NONE 0x0 /* page can not be accessed */
10#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
11#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
12
13#define MAP_SHARED 0x01 /* Share changes */
14#define MAP_PRIVATE 0x02 /* Changes are private */
15#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
16#define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */
17#define MAP_FIXED 0x100 /* Interpret addr exactly */
18#define MAP_ANONYMOUS 0x10 /* don't use a file */
19
20/* not used by linux, but here to make sure we don't clash with OSF/1 defines */
21#define _MAP_HASSEMAPHORE 0x0200
22#define _MAP_INHERIT 0x0400
23#define _MAP_UNALIGNED 0x0800
24
25/* These are linux-specific */
26#define MAP_GROWSDOWN 0x01000 /* stack-like segment */
27#define MAP_DENYWRITE 0x02000 /* ETXTBSY */
28#define MAP_EXECUTABLE 0x04000 /* mark it as an executable */
29#define MAP_LOCKED 0x08000 /* lock the mapping */
30#define MAP_NORESERVE 0x10000 /* don't check for reservations */
31#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
32#define MAP_NONBLOCK 0x40000 /* do not block on IO */
33#define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */
34#define MAP_HUGETLB 0x100000 /* create a huge page mapping */
35
36#define MS_ASYNC 1 /* sync memory asynchronously */
37#define MS_SYNC 2 /* synchronous memory sync */
38#define MS_INVALIDATE 4 /* invalidate the caches */
39
40#define MCL_CURRENT 8192 /* lock all currently mapped pages */
41#define MCL_FUTURE 16384 /* lock all additions to address space */
42#define MCL_ONFAULT 32768 /* lock all pages that are faulted in */
43
44#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
45
46#define MADV_NORMAL 0 /* no further special treatment */
47#define MADV_RANDOM 1 /* expect random page references */
48#define MADV_SEQUENTIAL 2 /* expect sequential page references */
49#define MADV_WILLNEED 3 /* will need these pages */
50#define MADV_SPACEAVAIL 5 /* ensure resources are available */
51#define MADV_DONTNEED 6 /* don't need these pages */
52
53/* common/generic parameters */
54#define MADV_FREE 8 /* free pages only if memory pressure */
55#define MADV_REMOVE 9 /* remove these pages & resources */
56#define MADV_DONTFORK 10 /* don't inherit across fork */
57#define MADV_DOFORK 11 /* do inherit across fork */
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_NODUMP flag */
68
69#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
70#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
71
72/* compatibility flags */
73#define MAP_FILE 0
74
75#define PKEY_DISABLE_ACCESS 0x1
76#define PKEY_DISABLE_WRITE 0x2
77#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
78 PKEY_DISABLE_WRITE)
79
80#endif /* __ALPHA_MMAN_H__ */