From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wei Huang <wei.huang2@amd.com>
Subject: Re: (no subject)
Date: Thu, 5 Apr 2012 14:36:33 -0500
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To: Francisco Rocha <f.e.liberal-rocha@newcastle.ac.uk>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 04/05/2012 01:26 PM, Francisco Rocha wrote:
> Date: Thu, 5 Apr 2012 18:44:14 +0100
> From: Andrew Cooper<andrew.cooper3@citrix.com>
> To:<xen-devel@lists.xen.org>
> Subject: Re: [Xen-devel] lastest xen unstable crash
> Message-ID:<4F7DD9EE.3080404@citrix.com>
> Content-Type: text/plain; charset="ISO-8859-1"
>
> On 05/04/12 18:37, Francisco Rocha wrote:
>> Hi everyone,
>>
>> I was trying to build a new machine but the system keeps rebooting.
>> I used the lasted unstable version from xen-unstable.hg.
>>
>> I have tried with Fedora 16 (kernel 3.3.0-8) and Xubuntu 11.10 (3.0.0.17-generic).
>>
>> The output to my serial console is attached.
>>
>> Cheers,
>> Francisco
> What is your Linux command line? does it include "console=hvc0"?
> Perhaps some early_printk settings are required.
>
> Please include my email in your replies, thank you.
>
> Yes, it includes hvc0. I used your tutorial to setup the SOL.
>
> title        Xen 3.4.2 / pv_ops Linux dom0 2.6.31.6 with a serial console
> root         (hd0,0)
> kernel       /xen-3.4.gz dom0_mem=512M loglvl=all guest_loglvl=all sync_console console_to_ring com1=115200,8n1,0xe000,0 console=com1
> module       /vmlinuz-2.6.31.6 ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen nomodeset
> module       /initrd-2.6.31.6.img
>
> Something like this, I am not at the machine anymore.
>
> Francisco
>
It looks like xsave/xrstore instructions (xsetbv instruction in 
xstate_enable() function to be exact) related. You can try to disable 
xsave to to see if this helps.

-Wei