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Re: [Xen-users] Nvidia drivers in Dom0 results in blank screen

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Nvidia drivers in Dom0 results in blank screen
From: Brandon Turner <bturner@xxxxxxxxxx>
Date: Tue, 15 Dec 2009 15:24:30 -0600
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On 12/15/2009 12:58 PM, Andrew Lyon wrote:
> On Tue, Dec 15, 2009 at 4:40 PM, Brandon Turner <bturner@xxxxxxxxxx> wrote:
>> I am trying
>> to get the Nvidia binary drivers working on my Ubuntu Dom0.
>> I used the kernel sources at
>> git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git to build my
>> kernel
> Nvidia binary drivers do not work with pv_ops dom0 kernel, it is
> possible to get them working with a "classic" dom0 kernel (i.e forward
> ported 2.6.18 patches) but it requires some kludges and only works on
> certain kernel versions.
> Andy

Thank you.  I'm not sure how I missed this.  It was even discussed on
this list back in July:

I read on the Xen Wiki
(http://wiki.xensource.com/xenwiki/XenDom0Kernels) that future Xen
versions (3.5/4.0) will default to the pv_ops dom0 kernel.  As most of
the Nvidia drivers are distributed in binary format, does this mean that
Nvidia would have to modify their driver code (aka specifically support
Xen pv_ops dom0) for this to work with future Xen versions?  In this
case it probably wouldn't be wise for me to go down the binary drivers
path and should either try something else or settle on nv.

Does anyone know how long the "old-style" dom0 kernel will be
supported?  Will Xen 3.5/4.0 support both, with pv-ops as the default,
or is the idea to eventually drop the old-style kernel.  As a noob to
Xen, what is the significance of kernel version 2.6.18?  Did something
in the kernel change that doesn't allow for an older style dom0 kernels,
or is it just more effort then its worth to branch the newer releases
(especially with all the pv_ops success).


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