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- #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 */
- #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 */
- #define MAP_SHARED 0x01 /* Share changes */
- #define MAP_PRIVATE 0x02 /* Changes are private */
- #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 */
- #ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED
- # define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */
- #else
- # define MAP_UNINITIALIZED 0x0 /* Don't support this flag */
- #endif
- /*
- * 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 */
- /* compatibility flags */
- #define MAP_FILE 0
- /*
- * When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size.
- * This gives us 6 bits, which is enough until someone invents 128 bit address
- * spaces.
- *
- * Assume these are all power of twos.
- * When 0 use the default page size.
- */
- #define MAP_HUGE_SHIFT 26
- #define MAP_HUGE_MASK 0x3f
- #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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