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Date:      Wed, 21 Jul 2010 12:17:06 +0300
From:      Andriy Gapon <avg@icyb.net.ua>
To:        Markus Gebert <markus.gebert@hostpoint.ch>
Cc:        freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org>
Subject:   Re: 8.1-RC2 MCE caused by some LAPIC/clock changes?
Message-ID:  <4C46BB12.6090903@icyb.net.ua>
In-Reply-To: <4C46B0C6.4020400@icyb.net.ua>
References:  <6B57591F-9FA2-45EB-825F-1DB025C0635D@hostpoint.ch>	<9DCFE2F6-D7CB-49CB-8EBC-06C1E5EBB727@hostpoint.ch>	<F744F475-3D2B-4BC6-856A-A5D302AA8681@hostpoint.ch>	<201007201559.45081.jhb@freebsd.org> <6781BC8B-51E0-4F8B-9307-9C062DE70C21@hostpoint.ch> <4C46B0C6.4020400@icyb.net.ua>

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on 21/07/2010 11:33 Andriy Gapon said the following:
> Not sure how to interpret this properly.
> One possibility is a hardware problem where interrupt message route between
> ioapic2 and CPU to which lapic3 belongs is flaky.

Or, I/O path between that CPU and the PCI slot where the device resides.  Or the
CPU. Or...
I think that lapic2 and lapic3 reside in a different physical package/socket,
given that you have 2x2 CPU/core configuration.

BTW, John, could there be any problem because of this:
ioapic1: WARNING: intbase 48 != expected base 24
ioapic2: WARNING: intbase 56 != expected base 55
ioapic3: WARNING: intbase 24 != expected base 63

-- 
Andriy Gapon



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