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74 lines
2.8 KiB
74 lines
2.8 KiB
#ifndef __ASM_GENERIC_MMAN_COMMON_H |
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#define __ASM_GENERIC_MMAN_COMMON_H |
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/* |
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Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd. |
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Based on: asm-xxx/mman.h |
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*/ |
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#define PROT_READ 0x1 /* page can be read */ |
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#define PROT_WRITE 0x2 /* page can be written */ |
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#define PROT_EXEC 0x4 /* page can be executed */ |
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#define PROT_SEM 0x8 /* page may be used for atomic ops */ |
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#define PROT_NONE 0x0 /* page can not be accessed */ |
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#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ |
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#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ |
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#define MAP_SHARED 0x01 /* Share changes */ |
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#define MAP_PRIVATE 0x02 /* Changes are private */ |
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#define MAP_TYPE 0x0f /* Mask for type of mapping */ |
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#define MAP_FIXED 0x10 /* Interpret addr exactly */ |
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#define MAP_ANONYMOUS 0x20 /* don't use a file */ |
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#ifdef CONFIG_MMAP_ALLOW_UNINITIALIZED |
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# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be uninitialized */ |
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#else |
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# define MAP_UNINITIALIZED 0x0 /* Don't support this flag */ |
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#endif |
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/* |
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* Flags for mlock |
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*/ |
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#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ |
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#define MS_ASYNC 1 /* sync memory asynchronously */ |
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#define MS_INVALIDATE 2 /* invalidate the caches */ |
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#define MS_SYNC 4 /* synchronous memory sync */ |
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#define MADV_NORMAL 0 /* no further special treatment */ |
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#define MADV_RANDOM 1 /* expect random page references */ |
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#define MADV_SEQUENTIAL 2 /* expect sequential page references */ |
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#define MADV_WILLNEED 3 /* will need these pages */ |
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#define MADV_DONTNEED 4 /* don't need these pages */ |
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/* common parameters: try to keep these consistent across architectures */ |
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#define MADV_REMOVE 9 /* remove these pages & resources */ |
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#define MADV_DONTFORK 10 /* don't inherit across fork */ |
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#define MADV_DOFORK 11 /* do inherit across fork */ |
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#define MADV_HWPOISON 100 /* poison a page for testing */ |
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#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ |
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#define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
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#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ |
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#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
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#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
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#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, |
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overrides the coredump filter bits */ |
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#define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ |
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/* compatibility flags */ |
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#define MAP_FILE 0 |
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/* |
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* When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size. |
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* This gives us 6 bits, which is enough until someone invents 128 bit address |
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* spaces. |
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* |
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* Assume these are all power of twos. |
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* When 0 use the default page size. |
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*/ |
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#define MAP_HUGE_SHIFT 26 |
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#define MAP_HUGE_MASK 0x3f |
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#endif /* __ASM_GENERIC_MMAN_COMMON_H */
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