Subject: Re: Possible interrupt issues with Sun quad fast ethernet card
To: Ceri Storey <cez@necrofish.org.uk>
From: Manuel Bouyer <bouyer@antioche.eu.org>
List: port-xen
Date: 09/09/2005 12:19:06
On Fri, Sep 09, 2005 at 08:09:23AM +0100, Ceri Storey wrote:
> On Fri, Sep 09, 2005 at 12:05:52AM +0200, Manuel Bouyer wrote:
> > Hum, can we have more than 32 IRQs on an i386 ? The i386 port seems
> > to only know about IRQ 0-31. Using irq 40 shouldn't be a problem in Xen,
> > but I suspect that irq 40 just doesn't exists at the hardware level.
> 
> No wonder it's not interrupting then :)
> 
> > With an i386 kernel, the IRQ seems to be properly remapped. Is your
> > GENERIC a plain GENERIC, or did you add options ?
> 
> It's a vanilla GENERIC kernel. 

OK, so it should be the Xen kernel which is doing wrong IRQ mappings.
There are probably boot command line options to tweak this.
You may want to try "noacpi" or "ignorebiostables" on the boot command line.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--