[Spice-devel] [Qemu-devel] paravirtual mouse/tablet, v5

[Anthony Liguori]

On 01/27/2011 08:53 AM, Gerd Hoffmann wrote:
> On 01/27/11 15:27, Anthony Liguori wrote:
>> On 01/27/2011 07:11 AM, Gerd Hoffmann wrote:
>>> Hi,
>>>
>>> Next revision the pvmouse protocol. It is quite different now, I've
>>> decided to move to a model with one message per updated value, simliar
>>> to the linux input layer. There isn't a "mouse move" message any more.
>>> A mouse move event will be three messages now: one to update X, one to
>>> update Y and a third sync message to mark the end of the message
>>> block. That should be *alot* easier to extend in the future.
>>>
>>> Header file is attached. Comments are welcome.
>>
>> I can't comment on the multitouch bits but I like the new interface.
>
> BTW: Is there any plan for guest code already?  Should it stay within 
> the qemu source tree, in a guest/ directory maybe?  pvmouse daemon 
> would live there, also the upcoming guest agent bits.

I think it should live in the QEMU tree or at least on qemu.org.  We 
want these agents to be ubiquitous.

>
> Before finally committing to some protocol I'd like to have at least a 
> simple proof-of-concept which is able to handle all the mouse events 
> the current qemu mouse infrastructure is able to handle.
>
> Oh, and we'll have to define endianness of course so it keeps working 
> if host and guest have a different byteorder.  I'd suggest to pick 
> network byte order aka bigendian.

Makes sense to me.

Regards,

Anthony Liguori

>
> cheers,
>   Gerd
>
>