Re: [Xen-users] which processor family to select for Dom0 kernel based on Linux 2.6.18

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sat, Nov 28, 2009 at 10:02:14AM -0800, Tapas Mishra wrote:
> So where can the Xen kernel or the hypervisor be worked upon
> which are downloaded from
> http://www.xen.org/products/xen_source.html
> or is there any other way I can compile a Xenified Kernel from source
> and use it on  my machine.
>

Yes it will work on your machine. You don't need to choose Core2 Duo.
You choose the best available/possible based on your environment.

Like said, the 2.6.26-2-686 kernel you are running is NOT optimized for
Core2 Duo, it's _generic_ kernel.

You can compile generic 686 2.6.18 kernel yourself.

-- Pasi

> On Sat, Nov 28, 2009 at 9:20 AM, Gémes Géza <geza@xxxxxxxxxxx> wrote:
> > Tapas Mishra írta:
> >> So does that mean I will not be able to use it for my Core2Duo I
> >>
> > NO!
> > It means it won't contain those improvements which were applied to have
> > the kernel work more efficiently on Core2Duo CPUs.
> > As you wrote before currently you are running 2.6.26-2-686 which is a
> > generic unoptimized (optimized for the generic 686 arch) kernel,
> > generally all distribution kernels fall into this category (they aren't
> > optimized for your particular hardware).
> >> downloaded the latest xenified kernel from
> >> http://www.xen.org/products/xen_source.html
> >> and if its not here then where do I look in for  ?
> >>
> >>
> >>
> >>
> >> On Sat, Nov 28, 2009 at 9:08 AM, Gémes Géza <geza@xxxxxxxxxxx> wrote:
> >>
> >>> Because 2.6.18 didn't have Core2Duo or post Core2Duo optimizations.
> >>>
> >>>> Thats the problem it is showing me all the variations but not Core 2
> >>>> Duo so I asked
> >>>>
> >>>> On Sat, Nov 28, 2009 at 12:19 AM, Gémes Géza <geza@xxxxxxxxxxx> wrote:
> >>>>
> >>>>
> >>>>> Tapas Mishra írta:
> >>>>>
> >>>>>
> >>>>>> I am having  a Debian uname -a shows
> >>>>>> Linux debian 2.6.26-2-686 #1 SMP Wed Aug 19 06:06:52 UTC 2009 i686 
> >>>>>> GNU/Linux
> >>>>>>
> >>>>>>
> >>>>>> I downloaded from http://www.xen.org/products/xen_source.html
> >>>>>>       Linux 2.6.18 with Xen 3.4.x support source tarball, updated for 
> >>>>>> Xen 3.4.2
> >>>>>> I am not clear on following
> >>>>>> 1) Do I need to download and install          Xen 3.4.2 (hypervisor and
> >>>>>> tools) official source distribution which is another download given on
> >>>>>> this page if I compile the above xenified kernel or will it get xen
> >>>>>> also installed via some script in my system.
> >>>>>>
> >>>>>> 2) When I untarred the files I did a make menuconfig
> >>>>>> and
> >>>>>> Processor type and features -----> Processor Family it showed me 
> >>>>>> options
> >>>>>> from 386  upto VIA c3-2 it is showing me Pentium MMX,Pentium
> >>>>>> Pro,Celeron ,Pentium 4 but it is not showing me Core 2 Duo which I
> >>>>>> have how can I get it done enabled in kernel ?
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>> For a Dom0 choose whatever fits your processor better.
> >>>>> For a DomU choose the most common denominator of the Dom0's you intend
> >>>>> to migrate the given DomU between.
> >>>>>
> >>>>> Geza
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>
> >>
> >>
> >>
> >
> >
> 
> 
> 
> -- 
> 
> http://www.abhitech.com
> 
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