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Date: Fri, 3 Sep 2004 12:54:45 +0200
From: Mikael Pettersson <mikpe@csd.uu.se>
To: Hendrik Fehr <s4248297@rcs.urz.tu-dresden.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: Full CPU-usage on sis5513-chipset disc input/output-operations
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Hendrik Fehr writes:
 > APIC error on CPU0: 00(40)
 > APIC error on CPU0: 40(40)
 > APIC error on CPU0: 40(40)

These are "received illegal vector" errors. They indicate
a serious problem, either with the local APIC bus itself,
or with how the ACPI/MP tables cause us to program the local
and I/O APICs.

Do the errors persist if you disable ACPI?