[linux.git drm/ttm]: NULL pointer dereference upon driver probe

[Dave Airlie]

> Well how about completely removing the concept of a global TT from TTM?

Yes makes sense to me to try and rip out the global TT from the core
and turn it into a driver optional feature is possible.

Dave.

>
> What TTM should do is managing domains and help with the transitions
> between those domains.
>
> That one of those domains maps the backing pages into a global TT is
> completely specific to that domain and shouldn't bother TTM in any way.
>
> We can of course provide some default functions to manage AGP and
> classic GART, but TTM shouldn't enforce using those.
>
> Regards,
> Christian.
>
> >
> > Dave.
>