RE: [Xen-users] Windows 2003 Server Guest Sees Only 1 CPU

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> lists@xxxxxxxxxxxxx
> Sent: 28 January 2007 12:05
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Windows 2003 Server Guest Sees Only 1 CPU
> 
> Hi All,
> 
> I recently installed a windows 2003 server HVM guest on a 
> dual core AMD 
> host. However, the windows guest only sees one CPU even though I 
> specified VCPUS =
> "2" in the guest config file.
> 
> In the device manager in the windows guest, under the 
> computer device it has
> "standard PC".  This must be the cause of the problem, the 
> standard PC 
> is a uni
> processor kernel.  Is it safe to change this to a multi 
> processor ACPI 
> kernel or
> any other multiprocessor kernel?

I believe that you need at LEAST 3.0.4 to get SMP HVM guest to work, it
may even not work in 3.0.4 (I _know_ that my "unstable" delivers two
CPU's to my Windows guest, but I don't know exactly when this was
fixed). 

You can change your setting to ACPI SMP, but it probably will still only
see one CPU. 

--
Mats
> 
> Thanks in advance,
> 
> Steve.
> 
> 
> 
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