linux-kernel - Re: KVM warning about uncertified CPU for SMP for AMD model 2, stepping 3

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Message-ID: <4BB35EB5.5060402@amd.com>
Date:	Wed, 31 Mar 2010 16:39:49 +0200
From:	Andre Przywara <andre.przywara@....com>
To:	Jiri Kosina <jkosina@...e.cz>
CC:	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	Avi Kivity <avi@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Joerg Roedel <joerg.roedel@....com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: KVM warning about uncertified CPU for SMP for AMD model 2, stepping
 3

Jiri Kosina wrote:
> On Wed, 31 Mar 2010, Andre Przywara wrote:
>>
>> BTW.: I encourage people to test their KVM guests with "-cpu host" (on newer
>> QEMUs) and send me any crash logs.
> 
> I just quickly checked ...
> 
snip
> [    0.147235]  [<c0528a80>] init_amd+0x249/0x279
> [    0.148011]  [<c0527d74>] identify_cpu+0xc2/0x223
> [    0.149649]  [<c078822d>] identify_boot_cpu+0xa/0x22
> [    0.152010]  [<c07882c8>] check_bugs+0x8/0xd2
> [    0.153573]  [<c0781a05>] start_kernel+0x32e/0x3a9
> 
> But I admit that this isn't the most up-to-date version, so perhaps it's 
> already fixed ...
No, that is something new. I dug out the kernel (SLES 11.1?) and booted 
with my script, it crashed on FMS 16/9/0, so I guess this machine was a 
Magny-Cours, right?
Anyway, many thanks for the report, I will investigate this.

Regards,
Andre.

-- 
Andre Przywara
AMD-OSRC (Dresden)
Tel: x29712

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