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Re: [Qemu-ppc] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard

From: Alexander Graf
Subject: Re: [Qemu-ppc] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze)
Date: Wed, 17 Dec 2014 12:11:49 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.3.0

On 17.12.14 11:47, Mark Cave-Ayland wrote:
> On 17/12/14 10:23, Alexander Graf wrote:
>>> After the restart the keyboard is frozen and unresponsive. Some
>>> preliminary poking with gdb before and after seems to indicate that the
>>> cuda_receive_packet() functions aren't being called after the restart
>>> indicating that likely some state is missing from the savevm image and
>>> not being restored correctly. Anyone have any ideas as to what might be
>>> going wrong?
>> I don't think anyone has test the migration code on non-papr ppc for
>> quite a while. In fact, I'm surprised it's only the keyboard not working :).
>> You're more than invited to send patches to fix it! :)
> How did I know that would be the response ;) I don't suppose anyone has
> a vague memory of the timeframe/QEMU version when a savevm/loadvm was
> last working for -M g3beige as a starting point?!

Phew - 0.7.0 maybe? If you say that only CUDA is broken, I don't think
it'd be too hard to fix :). Check that there are VMSTATEs for everything
and maybe retrigger interrupts after migration.


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