-(qemu-2.11.x for Ubuntu 18.04, qemu-2.5.0 for Ubuntu 16.04). For perfomance
-testing QEMU is downloaded from `project homepage <qemu.org>`_ and compiled
-during testing. This allows framework to easily inject QEMU patches in case of
-need. In QEMU version <2.8 we used it for increasing QEMU virtion queue size.