Re: [Xen-users] CPUS, cores and threads inside domU

[Igor Chubin <igor@xxxxxxx>]

On Mo, Sep 15, 2008 at 11:50:48 +0200, Antoine Benkemoun wrote:
> Ah ok I understand better your question.
> 
> You can indeed assign it several vcpu's since at least version 3.1 which is
> what I am using. After, these cores will show up as independent CPUs in your
> VM's.
> 
> The config line to add is "vcpus=1"


Yes, right, and I want to present this vcpus to domU
as cores of one processor (not as independent processors).
AFAIU this become possible since Xen 3.3.
But I don't know how to do this.
Question was about this.

> 
> Cheers,
> Antoine
> 
> On Mon, Sep 15, 2008 at 11:47 AM, Igor Chubin <igor@xxxxxxx> wrote:
> 
> > On Mo, Sep 15, 2008 at 09:11:55 +0200, antoine.benkemoun@xxxxxx wrote:
> > > hello,
> > >
> > > Xen domU's are separated and are not aware that they are running in
> > > Xen (not quite for PV as the kernel is modified). I doubt this is
> > > possible since it would pose security problems with clients getting
> > > access (even partial) to the hypervisor.
> > > You should be able to see what is allocated to your VM but no more...
> > > A solution may be to get the dom0 to give the information to the
> > > domU's using an external database.
> >
> > Thank you for you answer, Antoine.
> >
> >
> > I'm sorry, I think that I had to formulate my question more
> > precisely.
> >
> > I do not want give domU any information about real hardware.
> > I want to provide it with virtual cpus (it is possible, ant question
> > is not about this) and show this vcpus say as cores of one CPU
> > or as independent CPUS. AFAIU this become possible since Xen 3.3.
> >
> >
> > >
> > > Cheers,
> > > Antoine
> > >
> > > On 9/13/08, Igor Chubin <igor@xxxxxxx> wrote:
> > > >
> > > > Hello, all.
> > > >
> > > >
> > > > Please, say me, is it possible to show
> > > > distinct number of threads, cores and number
> > > > of the virtualized processor inside a guest
> > > > Xen domains (both PV and HVM)?
> > > >
> > > > And if it is possible, how I should achieve this?
> > > >
> > > > And I have a similar question about CPU flags.
> > > > How can I hide some CPU flags and do not show them
> > > > inside a guest Xen domain?
> > > >
> > > >
> > > > Thank you
> > > >
> > > >
> > > > --
> > > > WBR, i.m.chubin
> > > >
> > > >
> > > > _______________________________________________
> > > > Xen-users mailing list
> > > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > > http://lists.xensource.com/xen-users
> > > >
> > >
> > >
> > > --
> > > Antoine Benkemoun
> > > Tel : 03.51.53.57.00
> > > Port : 06.32.88.59.35
> >
> > --
> > WBR, i.m.chubin
> >
> >
> 
> 
> -- 
> Antoine Benkemoun
> Tel : 03.51.53.57.00
> Port : 06.32.88.59.35

-- 
WBR, i.m.chubin


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