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Re: [Xen-devel] Re: [Xen-users] Hypervisor hangs on startup, 2.6.32-5-xe

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] Hypervisor hangs on startup, 2.6.32-5-xen dom0 kernel panic
From: Arno Toell <at@xxxxxxxxxx>
Date: Tue, 11 Jan 2011 18:03:40 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
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On 11.01.2011 17:38, Konrad Rzeszutek Wilk wrote:
> It could have been that was what you hit. I don't remember the changeset
> number, but you could try booting your old hypervisor without the Vt-D
> and see if that was it (iommu=off) ?

Chances are, as I already mentioned the machine boots fine if I disable
VMX in bios. Booting with "iommu=off" has the same effect.

I skipped through the changelogs recently and found, one (or more) of
the following changesets _should_ fix the issue. I'm lacking any
knowledge about the hypervisor's internal subsystems and code paths
though. So my seeked fix might or might not be within that subset at all.

http://xenbits.xensource.com/xen-4.0-testing.hg?rev/aced00366822
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/c9f461d6ea1d
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/f7d54e1d7044
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/81a636dd784d
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/9c7b9e65bc37
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/ae381a864b4f
http://xenbits.xensource.com/xen-4.0-testing.hg?rev/4e689840622f

As said, I look for the exact fix, to get Debian people a hint about
what to backport for their 4.0.1 soon-to-be-stable package.

- -- 
mit freundlichen Grüßen,
Arno Töll, BSc.
GnuPG Key-ID: 0x8408D4C4

Wavecon GmbH | Frankenstrasse 9 | 90762 Fuerth
Web: wavecon.de | Mail + Jabber at@xxxxxxxxxx
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