[PATCH] add EXA relocation function

[Jesse Barnes]

On Friday, December 07, 2007 1:33 pm Jesse Barnes wrote:
> In order to avoid having a fixed offset for the EXA offscreen area (which
> is nice if the driver is using TTM) drivers need to update the base offset
> of EXA memory in EnterVT, and may need to update any private pointers
> they've allocated as well (e.g. for the cursor or scanout buffers, etc.).
>
> Since the server already kicks out all the pixmaps at VT switch time, the
> relocation is trivial and will typically just involve the one, big free
> area and any locked driver allocations; this function reflects that.
>
> One possible enhancement would be to call back into a driver provided
> function to update the private allocations, but it wouldn't really save any
> code...
>
> Any thoughts on this?

Updated with a version bump and intel driver support.

Jesse
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