Chris Wilson 7c90b7de73 drm/i915: Apply a mb between emitting the request and hangcheck ... Seal the request and mark it as pending execution before we submit it to hardware. We assume that the actual submission cannot fail (that guarantee is provided by preallocating space in the request for the submission). As we may inspect this state without holding any locks during hangcheck we should apply a barrier to ensure that we do not see a more recent value in the HWS than we are tracking. Based on a patch by Mika Kuoppala. Suggested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1460010558-10705-8-git-send-email-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>		2016-04-08 11:44:48 +01:00
..
drm	drm/i915: Apply a mb between emitting the request and hangcheck	2016-04-08 11:44:48 +01:00
host1x	gpu: host1x: Set DMA ops on device creation	2016-03-04 16:24:57 +01:00
ipu-v3	Merge drm-fixes into drm-next.	2016-03-14 09:46:02 +10:00
vga	vga_switcheroo: Add support for switching only the DDC	2016-02-09 11:21:07 +01:00
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