1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef __ASM_GENERIC_MMAN_COMMON_H 3*4882a593Smuzhiyun #define __ASM_GENERIC_MMAN_COMMON_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd. 7*4882a593Smuzhiyun Based on: asm-xxx/mman.h 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #define PROT_READ 0x1 /* page can be read */ 11*4882a593Smuzhiyun #define PROT_WRITE 0x2 /* page can be written */ 12*4882a593Smuzhiyun #define PROT_EXEC 0x4 /* page can be executed */ 13*4882a593Smuzhiyun #define PROT_SEM 0x8 /* page may be used for atomic ops */ 14*4882a593Smuzhiyun /* 0x10 reserved for arch-specific use */ 15*4882a593Smuzhiyun /* 0x20 reserved for arch-specific use */ 16*4882a593Smuzhiyun #define PROT_NONE 0x0 /* page can not be accessed */ 17*4882a593Smuzhiyun #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ 18*4882a593Smuzhiyun #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* 0x01 - 0x03 are defined in linux/mman.h */ 21*4882a593Smuzhiyun #define MAP_TYPE 0x0f /* Mask for type of mapping */ 22*4882a593Smuzhiyun #define MAP_FIXED 0x10 /* Interpret addr exactly */ 23*4882a593Smuzhiyun #define MAP_ANONYMOUS 0x20 /* don't use a file */ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */ 26*4882a593Smuzhiyun #define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */ 27*4882a593Smuzhiyun #define MAP_NONBLOCK 0x010000 /* do not block on IO */ 28*4882a593Smuzhiyun #define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */ 29*4882a593Smuzhiyun #define MAP_HUGETLB 0x040000 /* create a huge page mapping */ 30*4882a593Smuzhiyun #define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */ 31*4882a593Smuzhiyun #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */ 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be 34*4882a593Smuzhiyun * uninitialized */ 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun * Flags for mlock 38*4882a593Smuzhiyun */ 39*4882a593Smuzhiyun #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #define MS_ASYNC 1 /* sync memory asynchronously */ 42*4882a593Smuzhiyun #define MS_INVALIDATE 2 /* invalidate the caches */ 43*4882a593Smuzhiyun #define MS_SYNC 4 /* synchronous memory sync */ 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define MADV_NORMAL 0 /* no further special treatment */ 46*4882a593Smuzhiyun #define MADV_RANDOM 1 /* expect random page references */ 47*4882a593Smuzhiyun #define MADV_SEQUENTIAL 2 /* expect sequential page references */ 48*4882a593Smuzhiyun #define MADV_WILLNEED 3 /* will need these pages */ 49*4882a593Smuzhiyun #define MADV_DONTNEED 4 /* don't need these pages */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun /* common parameters: try to keep these consistent across architectures */ 52*4882a593Smuzhiyun #define MADV_FREE 8 /* free pages only if memory pressure */ 53*4882a593Smuzhiyun #define MADV_REMOVE 9 /* remove these pages & resources */ 54*4882a593Smuzhiyun #define MADV_DONTFORK 10 /* don't inherit across fork */ 55*4882a593Smuzhiyun #define MADV_DOFORK 11 /* do inherit across fork */ 56*4882a593Smuzhiyun #define MADV_HWPOISON 100 /* poison a page for testing */ 57*4882a593Smuzhiyun #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ 60*4882a593Smuzhiyun #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ 63*4882a593Smuzhiyun #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, 66*4882a593Smuzhiyun overrides the coredump filter bits */ 67*4882a593Smuzhiyun #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ 70*4882a593Smuzhiyun #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun #define MADV_COLD 20 /* deactivate these pages */ 73*4882a593Smuzhiyun #define MADV_PAGEOUT 21 /* reclaim these pages */ 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /* compatibility flags */ 76*4882a593Smuzhiyun #define MAP_FILE 0 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun #define PKEY_DISABLE_ACCESS 0x1 79*4882a593Smuzhiyun #define PKEY_DISABLE_WRITE 0x2 80*4882a593Smuzhiyun #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ 81*4882a593Smuzhiyun PKEY_DISABLE_WRITE) 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun #endif /* __ASM_GENERIC_MMAN_COMMON_H */ 84