From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Jones <drjones@redhat.com>
Subject: Re: Ubuntu 10.04 stuck in detect_extended_topology()
Date: Fri, 02 Jul 2010 15:48:36 +0200
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On 06/10/2010 02:54 AM, Jeremy Fitzhardinge wrote:
> On 06/09/2010 05:29 PM, AP Xen wrote:
>> The host cpu type is "Intel(R) Xeon(R) CPU E5520  @ 2.27GHz" (x86_64).
>>
>> What should I specify in "cpuid=" in the config file? I tried the following:
>>
>> cpuid = [ '0xb:ebx=xxxxxxxxxxxxxxxx0000000000000000' ]
>>
>> Is that correct?
>>   
> 
> Yes, or you could set 0:eax to some low number to just completely
> disable the whole leaf.
> 
> 
>> However, it did not have any effect. I do not see any mention of it in
>> xend.log. Maybe the version of Xen packaged with CentOS 5.4 not support the
>> cpuid config option.
>>   
> 
> If not, I'd file a bug against RHEL Xen.

Just found this thread catching up on old email.

Right, there's no configurable cpuid masking support. However, RHEL 5.5
(s/RHEL/CentOS/) masks ext. topo.

Drew