WARNING KVM acceleration not available, using 'qemu'

Verify that Virtualization Technology (VT) is enabled in your server's BIOS. Reboot your server and press F2 during POST to go into the BIOS, then select Processors Settings, and verify Virtualization Technology is Enabled. Save and Exit and let the server boot up

One more thing to do is to manually change the xml file from type=qemu to type=kvm and start the guest