Re: [Intel-gfx] [PATCH 1/2] drm/i915: Use a heavyweight irq-seqno barrier for gen6+

2017-02-15 Thread Chris Wilson
On Wed, Feb 15, 2017 at 02:32:18PM +0200, Ville Syrjälä wrote: > On Wed, Feb 15, 2017 at 12:15:43PM +, Chris Wilson wrote: > > On Wed, Feb 15, 2017 at 01:59:59PM +0200, Ville Syrjälä wrote: > > > On Wed, Feb 15, 2017 at 11:36:08AM +, Chris Wilson wrote: > > > > I tried lightening the barrie

Re: [Intel-gfx] [PATCH 1/2] drm/i915: Use a heavyweight irq-seqno barrier for gen6+

2017-02-15 Thread Ville Syrjälä
On Wed, Feb 15, 2017 at 12:15:43PM +, Chris Wilson wrote: > On Wed, Feb 15, 2017 at 01:59:59PM +0200, Ville Syrjälä wrote: > > On Wed, Feb 15, 2017 at 11:36:08AM +, Chris Wilson wrote: > > > I tried lightening the barrier in commit 9b9ed3093613 ("drm/i915: Remove > > > forcewake dance from

Re: [Intel-gfx] [PATCH 1/2] drm/i915: Use a heavyweight irq-seqno barrier for gen6+

2017-02-15 Thread Chris Wilson
On Wed, Feb 15, 2017 at 01:59:59PM +0200, Ville Syrjälä wrote: > On Wed, Feb 15, 2017 at 11:36:08AM +, Chris Wilson wrote: > > I tried lightening the barrier in commit 9b9ed3093613 ("drm/i915: Remove > > forcewake dance from seqno/irq barrier on legacy gen6+") but that > > appears slightly on t

Re: [Intel-gfx] [PATCH 1/2] drm/i915: Use a heavyweight irq-seqno barrier for gen6+

2017-02-15 Thread Ville Syrjälä
On Wed, Feb 15, 2017 at 11:36:08AM +, Chris Wilson wrote: > I tried lightening the barrier in commit 9b9ed3093613 ("drm/i915: Remove > forcewake dance from seqno/irq barrier on legacy gen6+") but that > appears slightly on the optimistic side as we detect a very rare missed > interrupt on a few

[Intel-gfx] [PATCH 1/2] drm/i915: Use a heavyweight irq-seqno barrier for gen6+

2017-02-15 Thread Chris Wilson
I tried lightening the barrier in commit 9b9ed3093613 ("drm/i915: Remove forcewake dance from seqno/irq barrier on legacy gen6+") but that appears slightly on the optimistic side as we detect a very rare missed interrupt on a few machines. This patch goes super heavy with a force-waked sync-flush d