Re: [nVMX with: v3.9-11789-ge0fd9af] Stack trace when L2 guest is rebooted.

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2013-05-10 19:40, Nakajima, Jun wrote:
> On Fri, May 10, 2013 at 9:33 AM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>> On 2013-05-10 17:39, Kashyap Chamarthy wrote:
>>> On Fri, May 10, 2013 at 8:54 PM, Jan Kiszka <jan.kiszka@siemens.com> wrote:
>>>>
>>>> On 2013-05-10 17:12, Jan Kiszka wrote:
>>>>> On 2013-05-10 15:00, Kashyap Chamarthy wrote:
>>>>>> Heya,
>>>>>>
>>>>>> This is on Intel Haswell.
>>>>>>
>>>>>> First, some version info:
>>>>>>
>>>>>> L0, L1 -- both of them have same versions of kernel, qemu:
>>>>>>
> 
> I tried to reproduce such a problem, and I found L2 (Linux) hangs in
> SeaBIOS, after line "iPXE (http://ipxe.org) ...". It happens with or
> w/o VMCS shadowing (and even without my virtual EPT patches). I didn't
> realize this problem until I updated the L1 kernel to the latest (e.g.
> 3.9.0) from 3.7.0. L0 uses the kvm.git, next branch. It's possible
> that the L1 kernel exposed a bug with the nested virtualization, as we
> saw such cases before.

Hmm, no such issues here ATM although I'm on 3.9 for L1 as well.

Jan

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