1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2#ifndef __ALPHA_MMAN_H__ 3#define __ALPHA_MMAN_H__ 4 5#define PROT_READ 0x1 /* page can be read */ 6#define PROT_WRITE 0x2 /* page can be written */ 7#define PROT_EXEC 0x4 /* page can be executed */ 8#define PROT_SEM 0x8 /* page may be used for atomic ops */ 9#define PROT_NONE 0x0 /* page can not be accessed */ 10#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ 11#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ 12 13/* 0x01 - 0x03 are defined in linux/mman.h */ 14#define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */ 15#define MAP_FIXED 0x100 /* Interpret addr exactly */ 16#define MAP_ANONYMOUS 0x10 /* don't use a file */ 17 18/* not used by linux, but here to make sure we don't clash with OSF/1 defines */ 19#define _MAP_HASSEMAPHORE 0x0200 20#define _MAP_INHERIT 0x0400 21#define _MAP_UNALIGNED 0x0800 22 23/* These are linux-specific */ 24#define MAP_GROWSDOWN 0x01000 /* stack-like segment */ 25#define MAP_DENYWRITE 0x02000 /* ETXTBSY */ 26#define MAP_EXECUTABLE 0x04000 /* mark it as an executable */ 27#define MAP_LOCKED 0x08000 /* lock the mapping */ 28#define MAP_NORESERVE 0x10000 /* don't check for reservations */ 29#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */ 30#define MAP_NONBLOCK 0x40000 /* do not block on IO */ 31#define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */ 32#define MAP_HUGETLB 0x100000 /* create a huge page mapping */ 33#define MAP_FIXED_NOREPLACE 0x200000/* MAP_FIXED which doesn't unmap underlying mapping */ 34 35#define MS_ASYNC 1 /* sync memory asynchronously */ 36#define MS_SYNC 2 /* synchronous memory sync */ 37#define MS_INVALIDATE 4 /* invalidate the caches */ 38 39#define MCL_CURRENT 8192 /* lock all currently mapped pages */ 40#define MCL_FUTURE 16384 /* lock all additions to address space */ 41#define MCL_ONFAULT 32768 /* lock all pages that are faulted in */ 42 43#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ 44 45#define MADV_NORMAL 0 /* no further special treatment */ 46#define MADV_RANDOM 1 /* expect random page references */ 47#define MADV_SEQUENTIAL 2 /* expect sequential page references */ 48#define MADV_WILLNEED 3 /* will need these pages */ 49#define MADV_SPACEAVAIL 5 /* ensure resources are available */ 50#define MADV_DONTNEED 6 /* don't need these pages */ 51 52/* common/generic parameters */ 53#define MADV_FREE 8 /* free pages only if memory pressure */ 54#define MADV_REMOVE 9 /* remove these pages & resources */ 55#define MADV_DONTFORK 10 /* don't inherit across fork */ 56#define MADV_DOFORK 11 /* do inherit across fork */ 57 58#define MADV_MERGEABLE 12 /* KSM may merge identical pages */ 59#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ 60 61#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ 62#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ 63 64#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, 65 overrides the coredump filter bits */ 66#define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ 67 68#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ 69#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ 70 71#define MADV_COLD 20 /* deactivate these pages */ 72#define MADV_PAGEOUT 21 /* reclaim these pages */ 73 74#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */ 75#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */ 76 77#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */ 78 79#define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */ 80 81/* compatibility flags */ 82#define MAP_FILE 0 83 84#define PKEY_DISABLE_ACCESS 0x1 85#define PKEY_DISABLE_WRITE 0x2 86#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ 87 PKEY_DISABLE_WRITE) 88 89#endif /* __ALPHA_MMAN_H__ */ 90