/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
#ifndef __ASM_GENERIC_MMAN_COMMON_H
|
#define __ASM_GENERIC_MMAN_COMMON_H
|
|
/*
|
Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd.
|
Based on: asm-xxx/mman.h
|
*/
|
|
#define PROT_READ 0x1 /* page can be read */
|
#define PROT_WRITE 0x2 /* page can be written */
|
#define PROT_EXEC 0x4 /* page can be executed */
|
#define PROT_SEM 0x8 /* page may be used for atomic ops */
|
#define PROT_NONE 0x0 /* page can not be accessed */
|
#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
|
#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
|
|
#define MAP_SHARED 0x01 /* Share changes */
|
#define MAP_PRIVATE 0x02 /* Changes are private */
|
#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
|
#define MAP_TYPE 0x0f /* Mask for type of mapping */
|
#define MAP_FIXED 0x10 /* Interpret addr exactly */
|
#define MAP_ANONYMOUS 0x20 /* don't use a file */
|
#ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
|
# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */
|
#else
|
# define MAP_UNINITIALIZED 0x0 /* Don't support this flag */
|
#endif
|
|
/* 0x0100 - 0x80000 flags are defined in asm-generic/mman.h */
|
#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */
|
|
/*
|
* Flags for mlock
|
*/
|
#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
|
|
#define MS_ASYNC 1 /* sync memory asynchronously */
|
#define MS_INVALIDATE 2 /* invalidate the caches */
|
#define MS_SYNC 4 /* synchronous memory sync */
|
|
#define MADV_NORMAL 0 /* no further special treatment */
|
#define MADV_RANDOM 1 /* expect random page references */
|
#define MADV_SEQUENTIAL 2 /* expect sequential page references */
|
#define MADV_WILLNEED 3 /* will need these pages */
|
#define MADV_DONTNEED 4 /* don't need these pages */
|
|
/* common parameters: try to keep these consistent across architectures */
|
#define MADV_FREE 8 /* free pages only if memory pressure */
|
#define MADV_REMOVE 9 /* remove these pages & resources */
|
#define MADV_DONTFORK 10 /* don't inherit across fork */
|
#define MADV_DOFORK 11 /* do inherit across fork */
|
#define MADV_HWPOISON 100 /* poison a page for testing */
|
#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */
|
|
#define MADV_MERGEABLE 12 /* KSM may merge identical pages */
|
#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
|
|
#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
|
#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
|
|
#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
|
overrides the coredump filter bits */
|
#define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */
|
|
#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
|
#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
|
|
/* compatibility flags */
|
#define MAP_FILE 0
|
|
#define PKEY_DISABLE_ACCESS 0x1
|
#define PKEY_DISABLE_WRITE 0x2
|
#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
|
PKEY_DISABLE_WRITE)
|
|
#endif /* __ASM_GENERIC_MMAN_COMMON_H */
|
