1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_MMAN_H
3#define _UAPI_LINUX_MMAN_H
4
5#include <asm/mman.h>
6#include <asm-generic/hugetlb_encode.h>
7
8#define MREMAP_MAYMOVE 1
9#define MREMAP_FIXED 2
10
11#define OVERCOMMIT_GUESS 0
12#define OVERCOMMIT_ALWAYS 1
13#define OVERCOMMIT_NEVER 2
14
15#define MAP_SHARED 0x01 /* Share changes */
16#define MAP_PRIVATE 0x02 /* Changes are private */
17#define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */
18
19/*
20 * Huge page size encoding when MAP_HUGETLB is specified, and a huge page
21 * size other than the default is desired. See hugetlb_encode.h.
22 * All known huge page size encodings are provided here. It is the
23 * responsibility of the application to know which sizes are supported on
24 * the running system. See mmap(2) man page for details.
25 */
26#define MAP_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
27#define MAP_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK
28
29#define MAP_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB
30#define MAP_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB
31#define MAP_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB
32#define MAP_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
33#define MAP_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
34#define MAP_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
35#define MAP_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
36#define MAP_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
37#define MAP_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
38#define MAP_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
39#define MAP_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
40#define MAP_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
41
42#endif /* _UAPI_LINUX_MMAN_H */
43