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- /* 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 */
- /* 0x10 reserved for arch-specific use */
- /* 0x20 reserved for arch-specific use */
- #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 0x0f /* Mask for type of mapping */
- #define MAP_FIXED 0x10 /* Interpret addr exactly */
- #define MAP_ANONYMOUS 0x20 /* don't use a file */
- /* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */
- #define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */
- #define MAP_NONBLOCK 0x010000 /* do not block on IO */
- #define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */
- #define MAP_HUGETLB 0x040000 /* create a huge page mapping */
- #define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */
- #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */
- #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be
- * uninitialized */
- /*
- * 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 */
- #define MADV_COLD 20 /* deactivate these pages */
- #define MADV_PAGEOUT 21 /* reclaim these pages */
- #define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
- #define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
- #define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
- #define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */
- /* 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 */
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