[Intel-gfx] [PATCH] drm/i915: Use LRI to update the semaphore registers

[Daniel Vetter]

On Thu, Nov 15, 2012 at 09:14:48AM -0800, Ben Widawsky wrote:
> On Wed, 14 Nov 2012 11:06:42 -0800
> Ben Widawsky <ben at bwidawsk.net> wrote:
> 
> > On Wed, 14 Nov 2012 09:15:14 +0000
> > Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > 
> > > The bspec was recently updated to remove the ability to update the
> > > semaphore using the MI_SEMAPHORE_BOX command, the ability to wait upon
> > > the semaphore value remained. Instead the advice is to update the
> > > register using the MI_LOAD_REGISTER_IMM command. In cursory testing,
> > > semaphores continue to function - the question is whether this fixes
> > > some of the deadlocks where the semaphore registers contained stale
> > > values?
> > > 
> > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > > Cc: Daniel J Blueman <daniel at quora.org>
> > Reviewed-by: Ben Widawsky <ben at bwidawsk.net>
> Tested-by: Ben Widawsky <ben at bwidawsk.net>

I seem to have forgotten to mention that this is merged. Bad, bad me ...

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