On Mon, 2016-11-07 at 14:50 -0500, Laine Stump wrote: > Previously we added a set of EHCI+UHCI controllers to Q35 machines to > mimic real hardware as closely as possible, but recent discussions > have pointed out that the nec-usb-xhci (USB3) controller is much more > virtualization-friendly (uses less CPU), so this patch switches the > default for Q35 machinetypes to add an XHCI instead (if it's > supported, which it of course *will* be). > > Since none of the existing test cases left out USB controllers in the > input XML, a new Q35 test case was added which has *no* devices, so > ends up with only the defaults always put in by qemu, plus those added > by libvirt. We should probably have added that test case a while ago :) ACK -- Andrea Bolognani / Red Hat / Virtualization -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list