Path: blob/master/include/uapi/asm-generic/mman-common.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */1#ifndef __ASM_GENERIC_MMAN_COMMON_H2#define __ASM_GENERIC_MMAN_COMMON_H34/*5Author: Michael S. Tsirkin <[email protected]>, Mellanox Technologies Ltd.6Based on: asm-xxx/mman.h7*/89#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/* 0x10 reserved for arch-specific use */14/* 0x20 reserved for arch-specific use */15#define PROT_NONE 0x0 /* page can not be accessed */16#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */17#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */1819/* 0x01 - 0x03 are defined in linux/mman.h */20#define MAP_TYPE 0x0f /* Mask for type of mapping */21#define MAP_FIXED 0x10 /* Interpret addr exactly */22#define MAP_ANONYMOUS 0x20 /* don't use a file */2324/* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */25#define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */26#define MAP_NONBLOCK 0x010000 /* do not block on IO */27#define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */28#define MAP_HUGETLB 0x040000 /* create a huge page mapping */29#define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */30#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */3132#define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be33* uninitialized */3435/*36* Flags for mlock37*/38#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */3940#define MS_ASYNC 1 /* sync memory asynchronously */41#define MS_INVALIDATE 2 /* invalidate the caches */42#define MS_SYNC 4 /* synchronous memory sync */4344#define MADV_NORMAL 0 /* no further special treatment */45#define MADV_RANDOM 1 /* expect random page references */46#define MADV_SEQUENTIAL 2 /* expect sequential page references */47#define MADV_WILLNEED 3 /* will need these pages */48#define MADV_DONTNEED 4 /* don't need these pages */4950/* common parameters: try to keep these consistent across architectures */51#define MADV_FREE 8 /* free pages only if memory pressure */52#define MADV_REMOVE 9 /* remove these pages & resources */53#define MADV_DONTFORK 10 /* don't inherit across fork */54#define MADV_DOFORK 11 /* do inherit across fork */55#define MADV_HWPOISON 100 /* poison a page for testing */56#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */5758#define MADV_MERGEABLE 12 /* KSM may merge identical pages */59#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */6061#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */62#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */6364#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,65overrides the coredump filter bits */66#define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */6768#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */69#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */7071#define MADV_COLD 20 /* deactivate these pages */72#define MADV_PAGEOUT 21 /* reclaim these pages */7374#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */75#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */7677#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */7879#define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */8081#define MADV_GUARD_INSTALL 102 /* fatal signal on access to range */82#define MADV_GUARD_REMOVE 103 /* unguard range */8384/* compatibility flags */85#define MAP_FILE 08687#define PKEY_UNRESTRICTED 0x088#define PKEY_DISABLE_ACCESS 0x189#define PKEY_DISABLE_WRITE 0x290#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\91PKEY_DISABLE_WRITE)9293#endif /* __ASM_GENERIC_MMAN_COMMON_H */949596