1#ifndef __ASM_GENERIC_MMAN_COMMON_H
2#define __ASM_GENERIC_MMAN_COMMON_H
3
4/*
5 Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
6 Based on: asm-xxx/mman.h
7*/
8
9#define PROT_READ	0x1		/* page can be read */
10#define PROT_WRITE	0x2		/* page can be written */
11#define PROT_EXEC	0x4		/* page can be executed */
12#define PROT_SEM	0x8		/* page may be used for atomic ops */
13#define PROT_NONE	0x0		/* page can not be accessed */
14#define PROT_GROWSDOWN	0x01000000	/* mprotect flag: extend change to start of growsdown vma */
15#define PROT_GROWSUP	0x02000000	/* mprotect flag: extend change to end of growsup vma */
16
17#define MAP_SHARED	0x01		/* Share changes */
18#define MAP_PRIVATE	0x02		/* Changes are private */
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#define MS_ASYNC	1		/* sync memory asynchronously */
29#define MS_INVALIDATE	2		/* invalidate the caches */
30#define MS_SYNC		4		/* synchronous memory sync */
31
32#define MADV_NORMAL	0		/* no further special treatment */
33#define MADV_RANDOM	1		/* expect random page references */
34#define MADV_SEQUENTIAL	2		/* expect sequential page references */
35#define MADV_WILLNEED	3		/* will need these pages */
36#define MADV_DONTNEED	4		/* don't need these pages */
37
38/* common parameters: try to keep these consistent across architectures */
39#define MADV_REMOVE	9		/* remove these pages & resources */
40#define MADV_DONTFORK	10		/* don't inherit across fork */
41#define MADV_DOFORK	11		/* do inherit across fork */
42#define MADV_HWPOISON	100		/* poison a page for testing */
43#define MADV_SOFT_OFFLINE 101		/* soft offline page for testing */
44
45#define MADV_MERGEABLE   12		/* KSM may merge identical pages */
46#define MADV_UNMERGEABLE 13		/* KSM may not merge identical pages */
47
48#define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
49#define MADV_NOHUGEPAGE	15		/* Not worth backing with hugepages */
50
51/* compatibility flags */
52#define MAP_FILE	0
53
54#endif /* __ASM_GENERIC_MMAN_COMMON_H */
55