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[Xen-users] cpuid configuration for 2X quad core xeon with ht

To: Xen Users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] cpuid configuration for 2X quad core xeon with ht
From: Hinrich Aue <Hinrich.Aue@xxxxxxxxx>
Date: Fri, 27 Nov 2009 10:54:29 +0100
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Thread-topic: cpuid configuration for 2X quad core xeon with ht
Hello list,

we are trying to get a windows 2003 enterprise running with our 2 socket xeon 
quad core with hyperthreading.

Since xen turns every thread into a cpu, we could not use enterprise, it only 
supports 8 CPU, but we want the hyperthreading as well (16 logical cpu).

We tried
cpuid = 
['1:edx=xxx1xxxxxxxxxxxxxxxxxxxxxxxxxxxx,ebx=xxxxxxxx00001000xxxxxxxxxxxxxxxx','4,0:eax=001111xxxxxxxxxxxxxxxxxxxxxxxxxx']
vcpus=16

but windows does not start with it.
When we set vcpus=8 then it starts - with 8 cpus of course.

Does anybody have an idea for the correct configuration?

Thanks,
        Hinrich


Hinrich Aue
Sr. SW Engineer
Kofax Development GmbH

Freiburger Strasse 6
79199 Kirchzarten
Germany

Tel: +49 (7661) 9797 17
Fax: +49 (7661) 9797 29
Hinrich.Aue@xxxxxxxxx



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Kofax Development GmbH
Sitz der Gesellschaft: Kirchzarten
Registergericht: Amtsgericht Freiburg i.Br.
Registernummer: HRB 7007
Gesch?ftsf?hrer: Stefan Gaiser und Bradford Weller

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