cursor handling and updates inside DRM

[Simon Thum]

Tiago Vignatti wrote:
> Daniel Stone escreveu:
>> On Thu, Jul 10, 2008 at 04:05:57AM -0300, Tiago Vignatti wrote:
>>> - transform relative motion into absolute
>>> - takes care the cursor limits
>>> - responsible for the acceleration computation
>>> - responsible for the input transformation as well?
>>> - touch the gfx registers.
>> Hang on, are we actually putting all this in the kernel?
> 
> Yes, Daniel. This was my first thought.
> 
> Now I'm trying to discuss with you how we can distribute this things 
> between X, drm and kernel.
As I view it, a hypothetical driver combo could do this today. It would 
be in need to somehow sync its operation to the server mechanisms, but 
surely doable.

But all this in the kernel is an impedance mismatch to me. What could it 
buy us we don't have today?