From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jean Guyader <jean.guyader@eu.citrix.com>
Subject: Re: Xen HVM cpuid problem
Date: Tue, 13 May 2008 13:53:37 +0100
Message-ID: <48298F51.9040107@eu.citrix.com>
References: <200805131441.05576.Christoph.Egger@amd.com>
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To: Christoph Egger <Christoph.Egger@amd.com>
Cc: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>, xen-devel@lists.xensource.com
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Christoph Egger wrote:
> Hi Keir,
> 
> For HVM guests, all cpuid Fn's going through domain_cpuid()
> iterate over the loop and then return 0 for all four registers.
> 

This loop return 0 to all four registers, if there is no cpuid 
configuration for this input.

> 
> To reproduce this, cpuid is NOT explicitely configured
> in the guest config file.

What do you would like to say by "NOT explicitly configured" ? Could you 
please give us an example ?

> 
> BTW: Is there a reason for not handling cpuid in one central place?
> 

Yes, there is, because cpuid havn't exactly the same behavior under 
intel and amd.

-- 
Jean Guyader