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Re: [Fedora-xen] 2.6.31-1.2.65.xendom0.fc12.x86_64 crash on boot

This absolutely fixes my issue. With the latest patch, I can boot my system successfully if NX is enabled or disabled in the BIOS.

Just a final note, I do need to make sure VT-d is disabled in the BIOS, and then I can boot. This was obviously not addressed in this patch nor was it requested to be. It would be nice to have it working at some point as this machine will hopefully have a bunch of NVidia cards in it that will need to be dedicated to each of the domU's for CUDA research.

Thank you all for your prompt and courteous responses. It makes me proud to be a RHCE when I get support from a community of developers like you guys.


On Sep 16, 2009, at 7:47 AM, Pasi Kärkkäinen wrote:

On Wed, Sep 16, 2009 at 09:47:17AM +0100, M A Young wrote:
On Tue, 15 Sep 2009, Jeremy Fitzhardinge wrote:

On 09/15/09 04:39, Pasi Kärkkäinen wrote:
On Tue, Sep 15, 2009 at 07:29:52AM -0400, Charles Gruener wrote:

Thanks for the help on configuring my boot options. I apologize that
I forgot to mention I'm using the latest kernel from M. Young,
2.6.31-1.2.65.xendom0.fc12.x86_64. Here's what I get now that I've
done all of what you've said:

Ok. I've CCd Jeremy and xen-devel.

Does this crash look familiar to you Jeremy?

Does this fix it?

From 76ca2d74040210450a670df773d760867f07d519 Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy fitzhardinge citrix com>
Date: Tue, 15 Sep 2009 14:18:12 -0700
Subject: [PATCH] xen: check EFER for NX before setting up GDT mapping

kernel-2.6.31-1.2.67.xendom0.fc12.x86_64.rpm has this fix in if you want
to test it, at
(the other kernel packages are available via
) I haven't tested it so I don't know if it boots.

Charles: Please try this updated kernel and let us know if it works for


-- Pasi

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