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Subject: Re: Severe IRQ problems on Foster (P4 Xeon) system
To: macro@ds2.pg.gda.pl
Date: Wed, 20 Mar 2002 14:29:10 +0000 (GMT)
Cc: Martin.Wilck@fujitsu-siemens.com (Martin Wilck),
        pavel@suse.cz (Pavel Machek), mingo@elte.hu (Ingo Molnar),
        linux-kernel@vger.kernel.org (Linux Kernel mailing list)
In-Reply-To: <Pine.GSO.3.96.1020320121631.13532A-100000@delta.ds2.pg.gda.pl> from "Maciej W. Rozycki" at Mar 20, 2002 02:27:15 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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>  Depending on the configuration -- a user may specify "notsc" for whatever
> reason (although admittedly, that's mostly a debugging option).

Mixed multiplier x86 for one - I've got some basic code there to handle
this automatically but its not yet finished. Plenty of BP6 folks have
mismatched celewrongs

> no need to keep it enabled unconditionally and I/O cycles are quite
> expensive.  The following patch implements it.  Please test it.  It should
> cure your problems as a side effect, but that does not mean the BIOS isn't
> to be fixed.

The DMI strings for that bios version would be useful to so that we can
panic with a "BIOS upgrade required" message
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