diff options
Diffstat (limited to 'erts/emulator/sys/common/erl_mmap.h')
| -rw-r--r-- | erts/emulator/sys/common/erl_mmap.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h index 7ac61a82c1..fa51b663fa 100644 --- a/erts/emulator/sys/common/erl_mmap.h +++ b/erts/emulator/sys/common/erl_mmap.h @@ -38,7 +38,17 @@ # if HAVE_MREMAP # define ERTS_HAVE_OS_MREMAP 1 # endif -# if defined(MAP_FIXED) && defined(MAP_NORESERVE) +/* + * MAP_NORESERVE is undefined in FreeBSD 10.x and later. + * This is to enable 64bit HiPE experimentally on FreeBSD. + * Note that on FreeBSD MAP_NORESERVE was "never implemented" + * even before 11.x (and the flag does not exist in /usr/src/sys/vm/mmap.c + * of 10.3-STABLE r301478 either), and HiPE was working on OTP 18.3.3, + * so mandating MAP_NORESERVE on FreeBSD might not be needed. + * See the following message on how MAP_NORESERVE was treated on FreeBSD: + * <http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20150202/122958.html> + */ +# if defined(MAP_FIXED) && (defined(MAP_NORESERVE) || defined(__FreeBSD__)) # define ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION 1 # endif #endif |