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Date:      Fri, 01 Oct 2010 01:22:02 +0100
From:      Luke Marsden <luke@hybrid-logic.co.uk>
To:        Jung-uk Kim <jkim@FreeBSD.org>
Cc:        support@elastichosts.com, team@hybrid-logic.co.uk, freebsd-stable@FreeBSD.org
Subject:   Re: Problem running 8.1R on KVM with AMD hosts
Message-ID:  <1285892522.21063.1437.camel@pow>
In-Reply-To: <201009301855.51841.jkim@FreeBSD.org>
References:  <1285587910.31122.633.camel@pow> <1285601367.31122.909.camel@pow> <1285873071.21063.786.camel@pow> <201009301855.51841.jkim@FreeBSD.org>

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On Thu, 2010-09-30 at 18:55 -0400, Jung-uk Kim wrote:
> It seems MCA capability is advertised by the CPUID translator but 
> writing to the MSRs causes GPF.  In other words, it seems like a CPU 
> emulator bug.  A simple workaround is 'set hw.mca.enabled=0' from the 
> loader prompt.  If it works, add hw.mca.enabled="0" 
> in /boot/loader.conf to make it permanent.  MCA does not make any 
> sense in emulation any way.

Awesome, this allows us to boot 8.1R on Linux KVM with AMD hardware!

Thank you very much. This has just doubled our number of availability
zones.

-- 
Best Regards,
Luke Marsden
Hybrid Logic Ltd.

Web: http://www.hybrid-cluster.com/
Hybrid Web Cluster - cloud web hosting based on FreeBSD and ZFS

Mobile: +447791750420




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