[Intel-gfx] [PATCH 4/4] drm/i915: Support for pread/pwrite from/to non shmem backed objects

[Chris Wilson]

On Fri, Jul 31, 2015 at 06:46:20PM +0530, Goel, Akash wrote:
> Since the suggestion is to reuse the gtt_pwrite_fast function only
> for non-shmem backed objects, can we also relax the Tiling
> constraint here, apart from removing the PIN_NONBLOCK flag. As
> anyways there is a put_fence already being done in gtt_pwrite_fast
> function.

The tiling restraint is due to a hardware limitation (the effect of
swizzling), you cannot simply drop it.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre