Re: [Qemu-devel] [PATCH 0/2] dataplane: fix start/stop races

[tu bo <tubo@linux.vnet.ibm.com>]

Hi Christian:

On 03/30/2016 12:31 AM, Christian Borntraeger wrote:
> On 03/29/2016 03:42 PM, Michael S. Tsirkin wrote:
>> This works around races that data plane introduces
>> simply by exiting immediately if we detect
>> that dataplane is active.
>>
>> It's a small but ugly patch, it's only justification
>> is that it's minimally intrusive, and that it clearly
>> has no chance to break non data plane users.
>>
>> The idea is to rework it all post 2.6.
>>
>> Michael S. Tsirkin (2):
>>    virtio: add aio handler
>>    virtio-blk: use aio handler for data plane
>>
>>   include/hw/virtio/virtio-blk.h  |  2 ++
>>   include/hw/virtio/virtio.h      |  4 ++++
>>   hw/block/dataplane/virtio-blk.c | 13 +++++++++++++
>>   hw/block/virtio-blk.c           | 28 ++++++++++++++++++----------
>>   hw/virtio/virtio.c              | 36 ++++++++++++++++++++++++++++++++----
>>   5 files changed, 69 insertions(+), 14 deletions(-)
>>
>
> This also seems to help on my setup.Tu Bo, would be good if you
> can double check this patch set as well on your setup?

With qemu master +  [PATCH 0/2] dataplane: fix start/stop races,

I did NOT see any crash, result is good in my box. thanks

>
> Christian
>
>