Re: [Qemu-devel] VNC terminal server?

[Anthony Liguori <aliguori@us.ibm.com>]

Leonardo E. Reiter wrote:
> The Win4Lin Pro version is not a driver, but rather a high-priority 
> Windows userspace thread.  We try to avoid drivers as much as possible 
> because they are a serious obstacle to supporting new Windows versions 
> and service packs as they come out.  I can't comment on VMware's 
> approach to be honest.
>
> I will say that using a device that has readily and/or publicly 
> available drivers is probably ideal, such as a Wacom tablet.  We are 
> trying to move to more of a device model on Win4Lin Pro for 
> performance reasons, which is why I am interested in this approach.  
> But letting Microsoft maintain the guest driver, if it's built into 
> Windows, is the best solution.  It also guarantees the broadest 
> possible guest support in general - whether it be Linux, Mac OS X, etc.

The driver isn't built into Windows.  It's pretty easy to install though 
and the way my patch works, the PS/2 mouse is used until it detects the 
tablet has been enabled.

The Windows driver uses quite a bit more of the features of the tablet 
than the X driver so there's a bit more work to do but nothing 
extraordinary.

Regards,

Anthony Liguori

>
> If anyone has a link to Anthony Liguori's driver, I'd be glad to look 
> into fixing whatever may be wrong with it and posting the patches.
>
> Thanks,
>
> Leo Reiter
>
> andrzej zaborowski wrote:
>> I thought Anthony Liguori had already written a Wacom tablet emulator
>> for QEMU and that worked fine except it supports only one button. I
>> don't remember if this support was complete and I don't have a link to
>> the patch.
>>
>> With this you don't need to disable mouse acceleration in the guest OS
>> because it makes no sense to accelerate a tablet.
>>
>> On the other hand writing a guest-side driver for QEMU would leave
>> room for further improvements like hiding/showing or
>> grabbing/releasing the mouse at specific moments. Or, possibly reusing
>> tools from Win4Lin or VMtools from VMware.
>