RE: [Xen-users] CentOS domU vcpus ignored

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

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Mark Menard
> Sent: 14 December 2006 04:51
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] CentOS domU vcpus ignored
> 
> System: CentOS 4.4, latest Xen 3.0.3 installed from source.
> 
> I have a working CentOS dom0 and HVM based domU. I have two 
> issues at this
> point:
> 
> 1: The vcpus seems to be ignored. My domU always has one cpu.
> 
> I have set vcpus=2 in my HVM config, but it always comes up 
> with one cpu.

I think you need to set the number of CPU's when you create the BIOS in
3.0.3. 3.0.4 will have dynamic settings for number of CPUS... But I
could be wrong on that. 

> 
> 2: If I try to install in a 64 bit version of Linux in an HVM 
> domU it tells
> me it does not have 64 bit support.
> 
> >From my dom0:
> 
> # uname -a
> Linux mgr-1.vitarara.net 2.6.16.29-xen #1 SMP Tue Dec 12 
> 21:05:56 EST 2006
> x86_64 x86_64 x86_64 GNU/Linux
> 
> This looks like it's running 64 bit in dom0. *shrug*
> 
> Any insight or tips would be appreciated. I have been working 
> on this for
> about five days now, and I'm about out of ideas.

Make sure you set PAE=1 in your config file for the domU. Long Mode
requires PAE to be set, and if you tell the HVM domain that you don't
want PAE, then you don't get Long Mode either. 

--
Mats
> 
> Thanks,
> 
> Mark
> 
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> 
> 



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