linux-kernel - Re: 2.6.31-rc5 regression: x86 MCE malfunction on Thinkpad T42p

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Message-Id: <200908091234.04114.bzolnier@gmail.com>
Date:	Sun, 9 Aug 2009 12:34:03 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Johannes Stezenbach <js@...21.net>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: 2.6.31-rc5 regression: x86 MCE malfunction on Thinkpad T42p


On Sunday 09 August 2009 12:03:48 Johannes Stezenbach wrote:
> On Fri, Aug 07, 2009 at 07:09:42PM +0200, Johannes Stezenbach wrote:
> > 
> > I'm currently running linux-2.6.31-rc5-246-g90bc1a6 on
> > an old Thinkpad T42p.  During boot I get the following:
> ...
> > I guess I should try to boot with "lapic"?  But I think
> > MCE worked without "lapic" in earlier kernels. On a 2.6.29.1
> > kernel dmesg said:
> > 
> >    Local APIC disabled by BIOS -- you can enable it with "lapic"
> >    ...
> >    Intel machine check architecture supported.
> >    Intel machine check reporting enabled on CPU#0.
> > 
> > 2.6.29.1 doesn't log any MCE events, so I doubt this is a HW problem.

http://patchwork.kernel.org/patch/37908/
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