From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yang Hongyang <yanghy@cn.fujitsu.com>
Subject: Re: [PATCH v2 COLOPre 03/13] libxc/restore: zero ioreq
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Date: Thu, 11 Jun 2015 20:58:59 +0800
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To: Paul Durrant <Paul.Durrant@citrix.com>, Wen Congyang <wency@cn.fujitsu.com>, Andrew Cooper <Andrew.Cooper3@citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Cc: Wei Liu <wei.liu2@citrix.com>, Ian Campbell <Ian.Campbell@citrix.com>, "guijianfeng@cn.fujitsu.com" <guijianfeng@cn.fujitsu.com>, "yunhong.jiang@intel.com" <yunhong.jiang@intel.com>, Eddie Dong <eddie.dong@intel.com>, "rshriram@cs.ubc.ca" <rshriram@cs.ubc.ca>, Ian Jackson <Ian.Jackson@citrix.com>
List-Id: xen-devel@lists.xenproject.org



On 06/11/2015 06:20 PM, Paul Durrant wrote:
>> -----Original Message-----
>> From: Wen Congyang [mailto:wency@cn.fujitsu.com]
>> Sent: 11 June 2015 09:48
>> To: Paul Durrant; Andrew Cooper; Yang Hongyang; xen-devel@lists.xen.org
>> Cc: Wei Liu; Ian Campbell; guijianfeng@cn.fujitsu.com;
[...]
>
>>
>> In our implementation, we don't start a new emulator. The codes can work,
>> but some bugs may be not triggered.
>>
>
> How do you reconcile the incoming QEMU save record with the running emulator state?

We introduce a qmp command "xen-load-devices-state"(libxl__qmp_restore) which
can restore the emulator state. The step of resotre emulator state at a
checkpoint is:

1. libxl__qmp_stop    -> vm_stop() in qemu
2. libxl__qmp_restore -> load_vmstate() in qemu
3. libxl__qmp_resume  -> vm_start() in qemu

>
>    Paul
>
>> Thanks
>> Wen Congyang
>>
>>>
>>>    Paul
>>>
>>>>
>>>> Thanks
>>>> Wen Congyang
>>>>
>>>>>
>>>>>    Paul
>>>>>
>>>>>> We will set to the guest to a new state, the old state should be
>> dropped.
>>>>>>
>>>>>> Thanks
>>>>>> Wen Congyang
>>>>>>
>>>>>>>
>>>>>>>    Paul
>>>>>>>
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>> Wen Congyang
>>>>>>>>
>>>>>>>>>
>>>>>>>>>    Paul
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Thanks
>>>>>>>>>> Wen Congyang
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ~Andrew
>>>>>>>>>>> .
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> .
>>>>>>>>>
>>>>>>>
>>>>>>> .
>>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Xen-devel mailing list
>>>>>> Xen-devel@lists.xen.org
>>>>>> http://lists.xen.org/xen-devel
>>>>>
>>>>> _______________________________________________
>>>>> Xen-devel mailing list
>>>>> Xen-devel@lists.xen.org
>>>>> http://lists.xen.org/xen-devel
>>>>> .
>>>>>
>>>
>>> .
>>>
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
> .
>

-- 
Thanks,
Yang.