87 lines
3.5 KiB
C
87 lines
3.5 KiB
C
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#ifndef __ALPHA_MMAN_H__
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#define __ALPHA_MMAN_H__
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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 (OSF/1 is _wrong_) */
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#define MAP_FIXED 0x100 /* Interpret addr exactly */
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#define MAP_ANONYMOUS 0x10 /* don't use a file */
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/* not used by linux, but here to make sure we don't clash with OSF/1 defines */
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#define _MAP_HASSEMAPHORE 0x0200
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#define _MAP_INHERIT 0x0400
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#define _MAP_UNALIGNED 0x0800
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/* These are linux-specific */
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#define MAP_GROWSDOWN 0x01000 /* stack-like segment */
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#define MAP_DENYWRITE 0x02000 /* ETXTBSY */
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#define MAP_EXECUTABLE 0x04000 /* mark it as an executable */
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#define MAP_LOCKED 0x08000 /* lock the mapping */
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#define MAP_NORESERVE 0x10000 /* don't check for reservations */
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#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
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#define MAP_NONBLOCK 0x40000 /* do not block on IO */
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#define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */
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#define MAP_HUGETLB 0x100000 /* create a huge page mapping */
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#define MS_ASYNC 1 /* sync memory asynchronously */
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#define MS_SYNC 2 /* synchronous memory sync */
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#define MS_INVALIDATE 4 /* invalidate the caches */
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#define MCL_CURRENT 8192 /* lock all currently mapped pages */
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#define MCL_FUTURE 16384 /* lock all additions to address space */
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#define MCL_ONFAULT 32768 /* lock all pages that are faulted in */
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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 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_SPACEAVAIL 5 /* ensure resources are available */
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#define MADV_DONTNEED 6 /* don't need these pages */
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/* common/generic parameters */
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#define MADV_FREE 8 /* free pages only if memory pressure */
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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_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_NODUMP 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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#define PKEY_DISABLE_ACCESS 0x1
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#define PKEY_DISABLE_WRITE 0x2
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#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\
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PKEY_DISABLE_WRITE)
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#endif /* __ALPHA_MMAN_H__ */
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