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 /* compatibility flags */ 72 #define MAP_FILE 0 73 74 #define PKEY_DISABLE_ACCESS 0x1 75 #define PKEY_DISABLE_WRITE 0x2 76 #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ 77 PKEY_DISABLE_WRITE) 78 79 #endif /* __ALPHA_MMAN_H__ */ 80