[issue995] DFly doesnt work on Vmware and Virtualbox

[Gary Allan]

Hello,

I've also had issues running Dragonfly under Linux KVM. UP kernel appear 
to work fine but SMP builds freeze during buildworld. The host OS shows 
100% CPU usage inside the VM and DragonFly is completely unresponsive. 
("make -j8 buildworld") This is with HEAD and 1.12.2. I originally put 
it down to KVM but other BSDs have been Ok.

Gary