From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerd Knorr <kraxel@bytesex.org>
Subject: Re: apci issue
Date: Thu, 21 Apr 2005 16:46:50 +0200
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To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>, natasha@us.ibm.com, xen-devel@lists.xensource.com
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On Thu, Apr 21, 2005 at 03:26:53PM +0100, Keir Fraser wrote:
> 
> On 21 Apr 2005, at 15:03, Gerd Knorr wrote:
> 
> >On Thu, Apr 21, 2005 at 02:15:06PM +0100, Ian Pratt wrote:
> >>
> >>>Updated to current bk today, and my machine stopped booting ...
> >>>I've tracked it down to the apic changes from end of last week.
> >>>cset 1.1307 boots fine, 1.1308 doesn't.
> 
> Try changing the following line in xen/arch/x86/apic.c (in 
> setup_local_APIC):
>   if (!smp_processor_id()  && (pic_mode || !value)) {
> To:
>   if (!smp_processor_id()) {

Yep, that fixes it.

> My guess is that your IRQs are routed through the legacy PIC

It's indeed a old machine with a classic PIC, no IO-APIC yet.

  Gerd