On Tue, 2019-10-01 at 17:55 -0400, Ajay Kumar wrote: Please keep the list in the loop, though! I've re-added it. This only proves that you've installed it, not that it works. And as I said, the modified binary probably works fine on its own but libvirt might not be able to drive it, at least without tweaks. Just for the record, you're not supposed to modify files in /etc/libvirt/qemu directly; use virsh instead. If you run $ virt-manager --debug from the command line you will get a lot of output, including the XML that's passed to libvirt. Please attempt the installation again, capture that output in a plain text file and send it to the list as an attachment. Also run $ /usr/local/bin/qemu-system-x86_64 -machine help and attach the output of that command, too. That should help us figure out what's wrong. -- Andrea Bolognani / Red Hat / Virtualization