[libvirt] [PATCH v6 14/17] [ACKED] qemu: try to put ich9 sound device at 00:1B.0

[Andrea Bolognani]

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