Re: [Xen-devel] Possible bug, dom0 crash on ubuntu

[Rolu <rolu@xxxxxxxx>]

On Sun, Jun 17, 2012 at 5:04 AM, AP <apxeng@xxxxxxxxx> wrote:
>
> On Jun 16, 2012 5:56 PM, "Rolu" <rolu@xxxxxxxx> wrote:
>>
>> When booting a recently compiled Xen 4.2 on Ubuntu 12.04, dom0
>> crashes. I've included a serial console log below.
>>
>> I've used:
>> Xen 4.2 unstable rev. 25483, compiled on the same machine. I had to
>> apply the AT_EMPTY_PATH patch from
>> http://lists.gnu.org/archive/html/qemu-devel/2012-02/msg03460.html to
>> get it to compile.
>> Linux 3.2.0-25, which is the default kernel in Ubuntu's repository right
>> now.
>> Ubuntu 12.04 Precise
>>
>> Booting with the default Xen 4.1 from the Ubuntu repositories works.
>>
>> Using the kernel from
>> http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-precise/, which is
>> a mainline Linux kernel (and also more recent) works with my compiled
>> version of Xen 4.2
>>
>> So,
>> * Is xen 4.2 not happy with the 3.2 kernel I've used?
>> * Is this due to something Ubuntu modified in their default kernel?
>> * Is this an issue with Xen?
>> * Did I break something?
>
> This is an issue with the Ubuntu kernel. Check this thread out:
> http://lists.xen.org/archives/html/xen-devel/2012-05/msg00049.html
>
> Adding xsave=0 to the Xen kernel line in grub is the workaround.
>

Indeed, this worked. Thanks!

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