mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
746c9398f5
Now that we have 3 mmap flags shared by all architectures, let's move them into the common header. This will help discourage future architectures from duplicating code. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
76 lines
3.4 KiB
C
76 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef __PARISC_MMAN_H__
|
|
#define __PARISC_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 */
|
|
|
|
/* 0x01 - 0x03 are defined in linux/mman.h */
|
|
#define MAP_TYPE 0x2b /* Mask for type of mapping, includes bits 0x08 and 0x20 */
|
|
#define MAP_FIXED 0x04 /* Interpret addr exactly */
|
|
#define MAP_ANONYMOUS 0x10 /* don't use a file */
|
|
|
|
#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
|
|
#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
|
|
#define MAP_LOCKED 0x2000 /* pages are locked */
|
|
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
|
|
#define MAP_GROWSDOWN 0x8000 /* stack-like segment */
|
|
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
|
|
#define MAP_NONBLOCK 0x20000 /* do not block on IO */
|
|
#define MAP_STACK 0x40000 /* give out an address that is best suited for process/thread stacks */
|
|
#define MAP_HUGETLB 0x80000 /* create a huge page mapping */
|
|
#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */
|
|
|
|
#define MS_SYNC 1 /* synchronous memory sync */
|
|
#define MS_ASYNC 2 /* sync memory asynchronously */
|
|
#define MS_INVALIDATE 4 /* invalidate the caches */
|
|
|
|
#define MCL_CURRENT 1 /* lock all current mappings */
|
|
#define MCL_FUTURE 2 /* lock all future mappings */
|
|
#define MCL_ONFAULT 4 /* lock all pages that are faulted in */
|
|
|
|
#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */
|
|
|
|
#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/generic parameters */
|
|
#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_MERGEABLE 65 /* KSM may merge identical pages */
|
|
#define MADV_UNMERGEABLE 66 /* KSM may not merge identical pages */
|
|
|
|
#define MADV_HUGEPAGE 67 /* Worth backing with hugepages */
|
|
#define MADV_NOHUGEPAGE 68 /* Not worth backing with hugepages */
|
|
|
|
#define MADV_DONTDUMP 69 /* Explicity exclude from the core dump,
|
|
overrides the coredump filter bits */
|
|
#define MADV_DODUMP 70 /* Clear the MADV_NODUMP flag */
|
|
|
|
#define MADV_WIPEONFORK 71 /* Zero memory on fork, child only */
|
|
#define MADV_KEEPONFORK 72 /* Undo MADV_WIPEONFORK */
|
|
|
|
#define MADV_HWPOISON 100 /* poison a page for testing */
|
|
#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */
|
|
|
|
/* compatibility flags */
|
|
#define MAP_FILE 0
|
|
#define MAP_VARIABLE 0
|
|
|
|
#define PKEY_DISABLE_ACCESS 0x1
|
|
#define PKEY_DISABLE_WRITE 0x2
|
|
#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
|
|
PKEY_DISABLE_WRITE)
|
|
|
|
#endif /* __PARISC_MMAN_H__ */
|