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From: Mark Atkinson <atkin901@yahoo.com>
Date: Wed, 04 Nov 2009 13:45:32 -0800
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Subject: Re: 8.0RC2 amd64 - kernel panic running make buildworld
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Mark Atkinson wrote:
> Kai Gallasch wrote:
>> Am Wed, 04 Nov 2009 16:24:01 +0100
>> schrieb Dag-Erling Smørgrav <des@des.no>:
>>
>>> Kai Gallasch <gallasch@free.de> writes:
>>>> I installed 8.0RC2-amd64 on an 8-core opteron server a few days ago.
>>>>
>>>> When I try to do a make buildworld or make buildkernel the server
>>>> reboots without any message left in the logs. The same happens
>>>> when building bigger ports (for example ruby18 or perl58)
>>> Could it be related to this?  What's your CPUID?
> 
>> Found this in dmesg. Is this the CPUID? "Id = 0x100f23"
> 
> That's generation 16 (0xf) model 2, stepping 3.   This errata apparently
> only effects gen 15 (0xe) and some pre-release -- never released to
> public (0xf).   I have the same processor in my system btw.

sorry for the double wrong posting.  I see several webpages refer to 15
as f and 16 as f.  usr/ports/misc/cpuid refers to it as 15.

The pages referenced via the bugzilla entry in the commit refer to it as
 0xf but between 32 and 63.   Does the model 2 correctly put us in the
range in the commit 0x20 and 0x3f? (i.e. stepping is included?)