[pve-devel] [PATCH v2 qemu-server] cfg2cmd: Add the audiodev property to audio devs

[Thomas Lamprecht]

On 3/16/20 11:02 AM, Aaron Lauterer wrote:
> With Qemu 4.2 a new `audiodev` property was introduced [0] to explicitly
> specify the backend to be used for the audio device. This is accompanied
> with a warning that the fallback to the default audio backend is
> deprecated.
> 
> [0] https://wiki.qemu.org/ChangeLog/4.2#Audio
> 
> Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
> ---
> v1 [1]->v2:
> the audiodev property is always set, omitting the machine version check.

Why is that OK, doesn't that breaks using a 4.1 QEMU?

> 
> tested live migration with all 3 audio devs in both directions.
> 
> 
> [1] https://pve.proxmox.com/pipermail/pve-devel/2020-March/042381.html
> 
>  PVE/QemuServer.pm | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
> index b2ff515..0905e04 100644
> --- a/PVE/QemuServer.pm
> +++ b/PVE/QemuServer.pm
> @@ -3221,11 +3221,11 @@ sub config_to_command {
>  
>  	my $id = $audio->{dev_id};
>  	if ($audio->{dev} eq 'AC97') {
> -	    push @$devices, '-device', "AC97,id=${id}${audiopciaddr}";
> +	    push @$devices, '-device', "AC97,id=${id}${audiopciaddr},audiodev=$audio->{backend_id}";
>  	} elsif ($audio->{dev} =~ /intel\-hda$/) {
>  	    push @$devices, '-device', "$audio->{dev},id=${id}${audiopciaddr}";
> -	    push @$devices, '-device', "hda-micro,id=${id}-codec0,bus=${id}.0,cad=0";
> -	    push @$devices, '-device', "hda-duplex,id=${id}-codec1,bus=${id}.0,cad=1";
> +	    push @$devices, '-device', "hda-micro,id=${id}-codec0,bus=${id}.0,cad=0,audiodev=$audio->{backend_id}";
> +	    push @$devices, '-device', "hda-duplex,id=${id}-codec1,bus=${id}.0,cad=1,audiodev=$audio->{backend_id}";
>  	} else {
>  	    die "unkown audio device '$audio->{dev}', implement me!";
>  	}
>