Re: Sound not working properly on Xen Dom0, but works on native

[David Vrabel <david.vrabel@citrix.com>]

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@oracle.com> 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.

David