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 #define MAP_SHARED 0x01 /* Share changes */ 14 #define MAP_PRIVATE 0x02 /* Changes are private */ 15 #define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */ 16 #define MAP_TYPE 0x0f /* Mask for type of mapping (OSF/1 is _wrong_) */ 17 #define MAP_FIXED 0x100 /* Interpret addr exactly */ 18 #define MAP_ANONYMOUS 0x10 /* don't use a file */ 19 20 /* not used by linux, but here to make sure we don't clash with OSF/1 defines */ 21 #define _MAP_HASSEMAPHORE 0x0200 22 #define _MAP_INHERIT 0x0400 23 #define _MAP_UNALIGNED 0x0800 24 25 /* These are linux-specific */ 26 #define MAP_GROWSDOWN 0x01000 /* stack-like segment */ 27 #define MAP_DENYWRITE 0x02000 /* ETXTBSY */ 28 #define MAP_EXECUTABLE 0x04000 /* mark it as an executable */ 29 #define MAP_LOCKED 0x08000 /* lock the mapping */ 30 #define MAP_NORESERVE 0x10000 /* don't check for reservations */ 31 #define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */ 32 #define MAP_NONBLOCK 0x40000 /* do not block on IO */ 33 #define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */ 34 #define MAP_HUGETLB 0x100000 /* create a huge page mapping */ 35 #define MAP_FIXED_NOREPLACE 0x200000/* MAP_FIXED which doesn't unmap underlying mapping */ 36 37 #define MS_ASYNC 1 /* sync memory asynchronously */ 38 #define MS_SYNC 2 /* synchronous memory sync */ 39 #define MS_INVALIDATE 4 /* invalidate the caches */ 40 41 #define MCL_CURRENT 8192 /* lock all currently mapped pages */ 42 #define MCL_FUTURE 16384 /* lock all additions to address space */ 43 #define MCL_ONFAULT 32768 /* lock all pages that are faulted in */ 44 45 #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ 46 47 #define MADV_NORMAL 0 /* no further special treatment */ 48 #define MADV_RANDOM 1 /* expect random page references */ 49 #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 50 #define MADV_WILLNEED 3 /* will need these pages */ 51 #define MADV_SPACEAVAIL 5 /* ensure resources are available */ 52 #define MADV_DONTNEED 6 /* don't need these pages */ 53 54 /* common/generic parameters */ 55 #define MADV_FREE 8 /* free pages only if memory pressure */ 56 #define MADV_REMOVE 9 /* remove these pages & resources */ 57 #define MADV_DONTFORK 10 /* don't inherit across fork */ 58 #define MADV_DOFORK 11 /* do inherit across fork */ 59 60 #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ 61 #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ 62 63 #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ 64 #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ 65 66 #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, 67 overrides the coredump filter bits */ 68 #define MADV_DODUMP 17 /* Clear the MADV_NODUMP flag */ 69 70 #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ 71 #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ 72 73 /* compatibility flags */ 74 #define MAP_FILE 0 75 76 #define PKEY_DISABLE_ACCESS 0x1 77 #define PKEY_DISABLE_WRITE 0x2 78 #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ 79 PKEY_DISABLE_WRITE) 80 81 #endif /* __ALPHA_MMAN_H__ */ 82