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Re: [libvirt] [PATCH v2] qemu: sound: Support intel 'ich6' model

On 01/13/2011 08:45 AM, Cole Robinson wrote:
> @@ -3751,6 +3753,12 @@ qemuBuildCommandLine(virConnectPtr conn,
>                          goto error;
>                      virCommandAddArg(cmd, str);
> +
> +                    if (sound->model == VIR_DOMAIN_SOUND_MODEL_ICH6) {
> +                        virCommandAddArgList(cmd,
> +                                             "-device", "hda-duplex", NULL);

Suppose I want a guest with two sound cards, both using model='ich6'.
Am I correct that the qemu command line needs exactly one "-device
hda-duplex" to enable sound from either card to get back to the host,
but two "-device intel-hda,..." to implement the two cards in the guest?
 If so, this doesn't quite do the right thing (you instantiate the
hda-duplex device twice); you'd need a bool variable set after the first
time you emit this extra device.

I noticed this because it is similar to my smartcard patch, where
-device usb-ccid is needed only once, but -device ccid-card-* is needed
per <smartcard>.

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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