diff options
Diffstat (limited to 'freebsd/sys/sys/mman.h')
| -rw-r--r-- | freebsd/sys/sys/mman.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/freebsd/sys/sys/mman.h b/freebsd/sys/sys/mman.h index 5ed9cdd6..c79ad86d 100644 --- a/freebsd/sys/sys/mman.h +++ b/freebsd/sys/sys/mman.h @@ -91,6 +91,17 @@ */ #define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ #define MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */ + +/* + * Request specific alignment (n == log2 of the desired alignment). + * + * MAP_ALIGNED_SUPER requests optimal superpage alignment, but does + * not enforce a specific alignment. + */ +#define MAP_ALIGNED(n) ((n) << MAP_ALIGNMENT_SHIFT) +#define MAP_ALIGNMENT_SHIFT 24 +#define MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff) +#define MAP_ALIGNED_SUPER MAP_ALIGNED(1) /* align on a superpage */ #endif /* __BSD_VISIBLE */ #if __POSIX_VISIBLE >= 199309 |