I don't need madvise MADV_DONTNEED
Many tests fail because of a warning in rts/posix/OSMem.c
unable to decommit memory: function not implemented
The reason it says "function not implemented" is that the function madvise(..., MADV_DONTNEED) is not implemented.
This is on a stock Ubuntu LTS 14.04 machine. The only interesting thing about it is that it's running on a pre-production armv8 processor with a beta 4.2 guest kernel.