From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Randy.Dunlap" <rddunlap@osdl.org>
Subject: Re: unexpected IO-APIC
Date: Sat, 12 Jul 2003 21:09:09 -0700 (PDT)
Sender: linux-smp-owner@vger.kernel.org
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>
> Hello !
>
> I read in the boot period that I shall send a mail when something is wrong
> with the ACPI.
>
> I use an Intel SE7500CW2 board with 2 2.4Ghz Xeon Processor.
>
> I attache the full dmesg  log and  my kernel config file.
>
> It is something or normal the error ?
>
> Please send me and answer.

It's not a problem unless you are experiencing other system problems.
Linux contains a list on known IO APICs and this one is just not
recognized in 2.4.20 (which was released 2002-Nov-28).
There have been many updates to IO APIC recognition since then,
so if you are concerned about it, download & use a newer kernel.

~Randy