On Mon, 2016-11-07 at 14:50 -0500, Laine Stump wrote: > Real Q35 hardware has an ICH9 chip that includes several integrated > devices at particular addresses (see the file docs/q35-chipset.cfg in > the qemu source). libvirt already attempts to put the first two sets > of ich9 USB2 controllers it finds at 00:1D.* and 00:1A.* to match the > real hardware. This patch does the same for the ich9 "HD audio" > device. > > The main inspiration for this patch is that currently the *only* > device in a reasonable "workstation" type virtual machine config that > requires a legacy PCI slot is the audio device, Without this patch, > the standard Q35 machine created by virt-manager will have a > dmi-to-pci-bridge and a pci-bridge just for the sound device; with the > patch (and if you change the sound device model from the default > "ich6" to "ich9"), the machine definition constructed by virt-manager > has absolutely no legacy PCI controllers - any legacy PCI devices > (e.g. video and sound) are on pcie-root as integrated devices. ACK -- Andrea Bolognani / Red Hat / Virtualization -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list