[Intel-gfx] [PATCH] drm/i915: Use RCS flips on Ivybridge+

[Daniel Vetter]

On Tue, Aug 20, 2013 at 2:41 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
>> The DERRMR is overwritten by each before use. I thought that was
>> self-explanatory.
>
> The not-so-self-explanatory part is that there is a implicit
> synchronisation point in userspace between switching between flips and
> scanlines.

I was hoping for something that I could just lazily paste into the
commit message ;-)

While I rattle down my wishlist: Can you please pimp the dummy_load
stuff (or something similar) in kms_flip to ensure that the
to-be-flipped buffer is busy on the render ring and in a separate test
on the blt ring?

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch