[Intel-gfx] [PATCH 06/11] drm/i915: Force PSR exit by inactivating it.

[Chris Wilson]

On Thu, May 15, 2014 at 08:13:05PM -0400, Rodrigo Vivi wrote:
> The perfect solution for psr_exit is the hardware tracking the changes and
> doing the psr exit by itself. This scenario works for HSW and BDW with some
> environments like Gnome and Wayland.
> 
> However there are many other scenarios that this isn't true. Mainly one right
> now is KDE users on HSW and BDW with PSR on. User would miss many screen
> updates. For instances any key typed could be seen only when mouse cursor is
> moved. So this patch introduces the ability of trigger PSR exit on kernel side
> on some common cases that.

You know that userspace has been waiting for a PSR flag for over a year
now so that it can use the more efficient rendering paths when it makes
sense.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre