[edk2-devel] VirtIO sound device in qemu?

[Ethin Probst]

Didn't know you could do USB passthrough, that would be useful -- I do
have a USB mixer that I could test. And I could easily get USB
headphones as well.

On 6/9/21, Leif Lindholm <leif at nuviainc.com> wrote:
> On Wed, Jun 09, 2021 at 13:25:16 +0100, Michael Brown wrote:
>> On 09/06/2021 11:57, Laszlo Ersek wrote:
>> > I'm uneducated about the "deliverables" in GSoC, but in general I'd
>> > suggest narrowing down the scope as much as possible. I don't know how
>> > hard it is to program USB audio, but if QEMU provides a good device
>> > model for that, out of the box, I would recommend basing the edk2 work
>> > on that device.
>>
>> QEMU also has good support for passing through a real USB device, which
>> might be useful if you ever suspect that the QEMU device implementation
>> is
>> behaving incorrectly.
>
> I have used the USB passthrough in anger, and sometimes it has been
> flawless, but other times it has been flaky.
>
> So, yes - it is worth cross-checking real and emulated hw when running
> into unexpected issues, but the passed-through hw is not automatically
> more reliable.
>
> /
>     Leif
>
>> (This is not implausible: I still have several bugfixes for the QEMU USB
>> network device emulation sitting in an out-of-tree branch.)
>>
>> Michael
>


-- 
Signed,
Ethin D. Probst


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