[fedora-virt] close VM display => qemu-kvm goes to 100%

[Tom Horsley]

I was running updates on my new fedora 17 KVM, so I figured
it would take a while and I closed virt-manager.

The qemu-kvm process for the virtual machine had been running
at maybe 5 or 10 percent of the cpu, as soon as I closed
the windows, it went to 100%.

When I opened virt-manager again and opened the VM, the
cpu dropped back down to 5 or 10%.

It did choose to install the VM with spice as the display.
Is this behavior somehow related to spice? Or maybe the
display drive inside the VM (that is one of the thing
which is probably getting an update now).