From: Jean Guyader <jean.guyader@eu.citrix.com>
To: Christoph Egger <Christoph.Egger@amd.com>
Cc: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>, xen-devel@lists.xensource.com
Subject: Re: Xen HVM cpuid problem
Date: Tue, 13 May 2008 13:53:37 +0100 [thread overview]
Message-ID: <48298F51.9040107@eu.citrix.com> (raw)
In-Reply-To: <200805131441.05576.Christoph.Egger@amd.com>
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
next prev parent reply other threads:[~2008-05-13 12:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-13 12:41 Xen HVM cpuid problem Christoph Egger
2008-05-13 12:53 ` Jean Guyader [this message]
2008-05-13 12:56 ` Keir Fraser
2008-05-13 13:49 ` Christoph Egger
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