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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/* 0x01 - 0x03 are defined in linux/mman.h */
14#define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */
15#define MAP_FIXED 0x100 /* Interpret addr exactly */
16#define MAP_ANONYMOUS 0x10 /* don't use a file */
17
18/* not used by linux, but here to make sure we don't clash with OSF/1 defines */
19#define _MAP_HASSEMAPHORE 0x0200
20#define _MAP_INHERIT 0x0400
21#define _MAP_UNALIGNED 0x0800
22
23/* These are linux-specific */
24#define MAP_GROWSDOWN 0x01000 /* stack-like segment */
25#define MAP_DENYWRITE 0x02000 /* ETXTBSY */
26#define MAP_EXECUTABLE 0x04000 /* mark it as an executable */
27#define MAP_LOCKED 0x08000 /* lock the mapping */
28#define MAP_NORESERVE 0x10000 /* don't check for reservations */
29#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
30#define MAP_NONBLOCK 0x40000 /* do not block on IO */
31#define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */
32#define MAP_HUGETLB 0x100000 /* create a huge page mapping */
33#define MAP_FIXED_NOREPLACE 0x200000/* MAP_FIXED which doesn't unmap underlying mapping */
34
35#define MS_ASYNC 1 /* sync memory asynchronously */
36#define MS_SYNC 2 /* synchronous memory sync */
37#define MS_INVALIDATE 4 /* invalidate the caches */
38
39#define MCL_CURRENT 8192 /* lock all currently mapped pages */
40#define MCL_FUTURE 16384 /* lock all additions to address space */
41#define MCL_ONFAULT 32768 /* lock all pages that are faulted in */
42
43#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
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_SPACEAVAIL 5 /* ensure resources are available */
50#define MADV_DONTNEED 6 /* don't need these pages */
51
52/* common/generic parameters */
53#define MADV_FREE 8 /* free pages only if memory pressure */
54#define MADV_REMOVE 9 /* remove these pages & resources */
55#define MADV_DONTFORK 10 /* don't inherit across fork */
56#define MADV_DOFORK 11 /* do inherit across fork */
57
58#define MADV_MERGEABLE 12 /* KSM may merge identical pages */
59#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
60
61#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
62#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
63
64#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
65 overrides the coredump filter bits */
66#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */
67
68#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
69#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
70
71#define MADV_COLD 20 /* deactivate these pages */
72#define MADV_PAGEOUT 21 /* reclaim these pages */
73
74#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
75#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
76
77#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
78
79#define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */
80
81#define MADV_GUARD_INSTALL 102 /* fatal signal on access to range */
82#define MADV_GUARD_REMOVE 103 /* unguard range */
83
84/* compatibility flags */
85#define MAP_FILE 0
86
87#define PKEY_DISABLE_ACCESS 0x1
88#define PKEY_DISABLE_WRITE 0x2
89#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
90 PKEY_DISABLE_WRITE)
91
92#endif /* __ALPHA_MMAN_H__ */