1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __ALPHA_MMAN_H__
3 #define __ALPHA_MMAN_H__
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 */
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 */
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
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 */
35 #define MS_ASYNC 1 /* sync memory asynchronously */
36 #define MS_SYNC 2 /* synchronous memory sync */
37 #define MS_INVALIDATE 4 /* invalidate the caches */
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 */
43 #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
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 */
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 */
58 #define MADV_MERGEABLE 12 /* KSM may merge identical pages */
59 #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */
61 #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */
62 #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */
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 */
68 #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */
69 #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */
71 #define MADV_COLD 20 /* deactivate these pages */
72 #define MADV_PAGEOUT 21 /* reclaim these pages */
74 #define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
75 #define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
77 #define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
79 #define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */
81 /* compatibility flags */
84 #define PKEY_DISABLE_ACCESS 0x1
85 #define PKEY_DISABLE_WRITE 0x2
86 #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
89 #endif /* __ALPHA_MMAN_H__ */