Re: [Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support

[Stefan Priebe - Profihost AG]

Hello,

Am 10.11.2017 um 05:18 schrieb Jason Wang:
> 
> 
> On 2017年11月08日 19:22, Jason Wang wrote:
>>
>>
>> On 2017年11月08日 18:46, Paolo Bonzini wrote:
>>> On 08/11/2017 09:21, Jason Wang wrote:
>>>>
>>>> On 2017年11月08日 17:05, Stefan Priebe - Profihost AG wrote:
>>>>> Am 08.11.2017 um 08:54 schrieb Jason Wang:
>>>>>> On 2017年11月08日 15:41, Stefan Priebe - Profihost AG wrote:
>>>>>>> Hi Paolo,
>>>>>>>
>>>>>>> Am 06.11.2017 um 12:27 schrieb Paolo Bonzini:
>>>>>>>> On 06/11/2017 12:09, Stefan Priebe - Profihost AG wrote:
>>>>>>>>> HI Paolo,
>>>>>>>>>
>>>>>>>>> could this patchset be related?
>>>>>>>> Uh oh, yes it should.  Jason, any ways to fix it?  I suppose we
>>>>>>>> need to
>>>>>>>> disable UFO in the newest machine types, but do we also have to do
>>>>>>>> (software) UFO in vhost-net and QEMU for migration compatibility?
>>>>>>> Any news on this?
>>>>>>>
>>>>>>> Greets,
>>>>>> Since we probe UFO support, it will be disabled automatically on
>>>>>> device
>>>>>> startup.
>>>>>>
>>>>>> For the issue of migration, I think the only way is trying to fix
>>>>>> it in
>>>>>> kernel.
>>>>> But 4.14 is around the corner and the patchset is already included.
>>>>> Shouldn't this get fixed before 4.14 is released?
>>>> We will try to seek a solution as soon as possible. If we can't catch
>>>> 4.14, we will do it for stable for sure.
>>> Jason, can you write to netdev and Cc Linus and me?
>>>
>>> Thanks,
>>>
>>> Paolo
>>
>> Paolo, see this https://www.spinics.net/lists/netdev/msg465454.html
>>
>> Just notice this today since I'm not on the cc list.
>>
>> Thanks
>>
>>
> 
> An update:
> 
> After some discussions on netdev, we will try to bring UFO back
> partially for just TAP. Willem promise to fix this. 4.14 is too late
> consider the fix is not trivial, it will go through stable tree.

OK is it save to just revert the UFO patchset for my local branch?

Greets,
Stefan

> 
> Thanks