Re: [Xen-devel] Nvidia drivers on Xen with dom0 pvops on ultra-recent "git tip"kernel on x86_64

[Nigel Gamble <nigel@xxxxxxx>]

On Feb 24, 2009, at 1:51 PM, Andrew Lyon wrote:

> On Tue, Feb 24, 2009 at 9:22 PM, Jeremy Fitzhardinge  
> <jeremy@xxxxxxxx> wrote:
> > Boris Derzhavets wrote:
> > > X-Server fails to start on GeForce 8500 GT
> > > Attempting "startx" i get a trace back.
> > > Does it mean , that a proper NVIDIA driver is just not available  
> > > for the
> > > most recent
> > > 2.6.29-rc5 ?
> > Are you using the nvidia binary driver?  I would be surprised if it  
> > worked
> > out of the box; if changes need to be made to the binary parts, it  
> > may not
> > be fixable at all.
> >
> >   J
> I believe the current driver works with Xen because somebody outside
> of nvidia contributed a patch, I use the nvidia binary driver with Xen
> 3.2.1 and my custom dom0 kernel which is 2.6.27.10 patched with
> openSUSE Xen patches rebased to apply to vanilla, it works very well
> but when pv_ops is merged into mainline the nvidia driver will
> probably work when it is running on the bare metal but not under Xen
> :(.
>
> Having said that the patch for Xen support only touched the open
> source parts of the driver, as soon as the current problems with hvm
> on pv_ops are fixed I will be testing pv_ops and nvidia driver and I
> will attempt to fix any problems, my C skills are improving so I might
> be able to figure it out.

Did you ever figure this out?  I've just hit the same problem.  It  
looks like the source code part of the Nvidia kernel module has the  
code necessary to work on an old Xen Linux, but if it detects  
CONFIG_PARAVIRT set for a pv_ops kernel, it gives up an doesn't  
attempt to work with Xen at all.
Nigel

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