Re: [Xen-users] Shared interrupt in 2 domains: cards disabled

[arie@xxxxxxxxxxx (Arie Kraai)]

On Mon, Jul 11, 2005 at 10:18:16AM -0500, Anthony Liguori wrote:
> Arie Kraai wrote:
> >>I had to reboot the system...
> >>Is this a bug or should there be no shared interrupts at all between
> >>domains?
> >>   
> >
> >The situation is even worse: using a USB device in domU (hidden from
> >dom0) with the same interrupt as a SATA controller in dom0 corrupted the
> >SATA-disk in dom0!
> > 
> >
> I'm seeing something very similiar.  I've got USB, Sound, and Ethernet 
> all on a shared IRQ.  The devices are only being used in dom0 and if any 
> two out of the three are used rigoriously at the same time (say playing 
> an MP3 and downloading a large file) all of the devices hang.
> 
> FWIW, I have a bug entry in bugzilla about it.  You may want to take a 
> look at it and add some additional comments.
> 
> I didn't experience these problems until the ACPI code was reworked.
> 
> http://bugzilla.xensource.com/cgi-bin/bugzilla/show_bug.cgi?id=76

Unfortunately, I'm experiencing the problem in xen 2.0 (testing) and I
believe the code of delegating devices to other domains is very different
from the unstable tree (as far as I can read it...).
So I think it is another error!

Regards and thanks for the answer, Arie Kraai

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