Re: [Qemu-devel] [virtio-dev] Vhost-pci RFC2.0

[Wei Wang <wei.w.wang@intel.com>]

On 05/05/2017 05:18 PM, Jason Wang wrote:
>
>
> On 2017年05月05日 14:18, Wei Wang wrote:
>> On 05/05/2017 12:05 PM, Jason Wang wrote:
>>>
>>>
>>> On 2017年04月19日 14:38, Wang, Wei W wrote:
>>>> Hi,
>>>> We made some design changes to the original vhost-pci design, and 
>>>> want to open
>>>> a discussion about the latest design (labelled 2.0) and its 
>>>> extension (2.1).
>>>> 2.0 design: One VM shares the entire memory of another VM
>>>> 2.1 design: One VM uses an intermediate memory shared with another 
>>>> VM for
>>>>                      packet transmission.
>>>> For the convenience of discussion, I have some pictures presented 
>>>> at this link:
>>>> _https://github.com/wei-w-wang/vhost-pci-discussion/blob/master/vhost-pci-rfc2.0.pdf_ 
>>>>
>>>
>>> Hi, is there any doc or pointer that describes the the design in 
>>> detail? E.g patch 4 in v1 
>>> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05163.html.
>>>
>>> Thanks
>>
>> That link is kind of obsolete.
>>
>> We currently only have high level introduction of the design:
>>
>> For the device part design, please check slide 12:
>> http://www.linux-kvm.org/images/5/55/02x07A-Wei_Wang-Design_of-Vhost-pci.pdf 
>>
>> The vhost-pci protocol is changed to be an extension of vhost-user 
>> protocol.
>>
>> For the driver part design, please check Fig. 2:
>>
>> https://github.com/wei-w-wang/vhost-pci-discussion/blob/master/vhost-pci-rfc2.0.pdf 
>>
>
> Thanks for the pointers. It would be nice to have a doc like patch 4 
> in v1, this could ease reviewers, otherwise we may guess and ask for 
> them.
>

Thanks for joining the review. I'm preparing the v2 QEMU patches. I will 
have the code sent out first,
which would be helpful for understanding how the design works.

Best,
Wei