From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: Debuging dom0, oops while kexec
Date: Fri, 21 Jun 2013 14:30:05 +0100
Message-ID: <51C4555D.1060606@citrix.com>
References: <48da1ce0247529c7a5b61356de63eab9@roshianokatachi.com>
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To: Daniil Cherednik <dcherednik@roshianokatachi.com>
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On 21/06/13 13:01, Daniil Cherednik wrote:
> Hello!
> 
> We use ubuntu 12.04 on dom0 xen-4.1, linux-3.5
> We have some issue with our hardware driver, and I need to get dom0
> coredump. But when I was trying to configure kdump it was unsuccessful

This is expected -- kexec from a Xen guest is not supported by upstream
Linux.

> and I used kexec -l ... to diagnostic the issue I got oops like
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1807

Is it really like that one?  That oops dates back to a 2.6.32 kernel.

> Also I noticed recently it was discussing about implementation kexec
> mechanism in hypervisor without involving dom0 kernel...

Yes there is.  See the list archives.  Note that there are some bugs in
the latest version that was posted and I haven't yet had time to post an
updated patch series.

David