I have Windows XP installed using Fedora 7's Virtual Machine Manager with qemu-kvm.
It works great, except that the CPU us fully utilized even when Windows is idle.
Various searches have come up with these solutions....
I've set the video hardware acceleration to none.
I've ensured that -no-acpi is specified at startup and that the Computer is set to "Standard PC" in Windows.
I've even ensured that "-usb" is *not* specified on startup.
Nothing seems to make any difference to the cpu utilization.
BTW, if I start qemu-kvm on the command line, CPU goes right down. But, I have no idea how to get to the Windows system to see what's actually happening. But it makes me think the problem is with virt-manager.
Any advice appreciated.