| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| #ifndef __ASM_GENERIC_MMAN_COMMON_H |
| #define __ASM_GENERIC_MMAN_COMMON_H |
| |
| /* |
| Author: Michael S. Tsirkin <mst@mellanox.co.il>, Mellanox Technologies Ltd. |
| Based on: asm-xxx/mman.h |
| */ |
| |
| #define PROT_READ 0x1 /* page can be read */ |
| #define PROT_WRITE 0x2 /* page can be written */ |
| #define PROT_EXEC 0x4 /* page can be executed */ |
| #define PROT_SEM 0x8 /* page may be used for atomic ops */ |
| /* 0x10 reserved for arch-specific use */ |
| /* 0x20 reserved for arch-specific use */ |
| #define PROT_NONE 0x0 /* page can not be accessed */ |
| #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ |
| #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ |
| |
| /* 0x01 - 0x03 are defined in linux/mman.h */ |
| #define MAP_TYPE 0x0f /* Mask for type of mapping */ |
| #define MAP_FIXED 0x10 /* Interpret addr exactly */ |
| #define MAP_ANONYMOUS 0x20 /* don't use a file */ |
| |
| /* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */ |
| #define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */ |
| #define MAP_NONBLOCK 0x010000 /* do not block on IO */ |
| #define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */ |
| #define MAP_HUGETLB 0x040000 /* create a huge page mapping */ |
| #define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */ |
| #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */ |
| |
| #define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could be |
| * uninitialized */ |
| |
| /* |
| * Flags for mlock |
| */ |
| #define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ |
| |
| #define MS_ASYNC 1 /* sync memory asynchronously */ |
| #define MS_INVALIDATE 2 /* invalidate the caches */ |
| #define MS_SYNC 4 /* synchronous memory sync */ |
| |
| #define MADV_NORMAL 0 /* no further special treatment */ |
| #define MADV_RANDOM 1 /* expect random page references */ |
| #define MADV_SEQUENTIAL 2 /* expect sequential page references */ |
| #define MADV_WILLNEED 3 /* will need these pages */ |
| #define MADV_DONTNEED 4 /* don't need these pages */ |
| |
| /* common parameters: try to keep these consistent across architectures */ |
| #define MADV_FREE 8 /* free pages only if memory pressure */ |
| #define MADV_REMOVE 9 /* remove these pages & resources */ |
| #define MADV_DONTFORK 10 /* don't inherit across fork */ |
| #define MADV_DOFORK 11 /* do inherit across fork */ |
| #define MADV_HWPOISON 100 /* poison a page for testing */ |
| #define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ |
| |
| #define MADV_MERGEABLE 12 /* KSM may merge identical pages */ |
| #define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ |
| |
| #define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ |
| #define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ |
| |
| #define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, |
| overrides the coredump filter bits */ |
| #define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ |
| |
| #define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ |
| #define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ |
| |
| #define MADV_COLD 20 /* deactivate these pages */ |
| #define MADV_PAGEOUT 21 /* reclaim these pages */ |
| |
| #define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */ |
| #define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */ |
| |
| #define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */ |
| |
| #define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */ |
| |
| /* compatibility flags */ |
| #define MAP_FILE 0 |
| |
| #define PKEY_DISABLE_ACCESS 0x1 |
| #define PKEY_DISABLE_WRITE 0x2 |
| #define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ |
| PKEY_DISABLE_WRITE) |
| |
| #endif /* __ASM_GENERIC_MMAN_COMMON_H */ |
