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Re: [Xen-devel] Sound not working properly on Xen Dom0, but works on native

On Thu, Feb 9, 2012 at 2:55 PM, David Vrabel <david.vrabel@xxxxxxxxxx> wrote:
> On 09/02/12 17:42, Konrad Rzeszutek Wilk wrote:
>> On Sat, Jan 28, 2012 at 01:19:23PM -0500, Todd Deshane wrote:
>>> On Tue, Jan 17, 2012 at 11:12 AM, Konrad Rzeszutek Wilk
>>> <konrad.wilk@xxxxxxxxxx> wrote:
>>>> On Sun, Jan 15, 2012 at 07:12:52PM -0500, Todd Deshane wrote:
>>>>> Hi,
>>>>> I'm doing some testing on Ubuntu 12.04 Alpha. All sounds comes out as
>>>>> static on the Dom0 system. (I can PCI passthrough the audio card to a
>>>>> DomU and that works). Native sound works fine.
>>>>> Linux kronos 3.2.0-8-generic-pae #15-Ubuntu SMP Wed Jan 11 15:34:57
>>>>> UTC 2012 i686 i686 i386 GNU/Linux
>>>> Did you try 64-bit dom0?
>>> 64bit Dom0 works perfectly.
>> Aha! I have an inkling this is the
>> 7a7546b377bdaa25ac77f33d9433c59f259b9688
> This is "x86: xen: size struct xen_spinlock to always fit in
> arch_spinlock_t" from the 3.2 stable tree.
> There are many spinlock in sound/ affected by the bug fixed by the above
> dunno if any would cause sound distortion but there were plenty of
> deadlock opportunities though.

Tried the latest Ubuntu kernel that includes that patch
and it still has the same problem.


Todd Deshane

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