linux-kernel - Re: [PATCH 3.0-rc3] i915: Fix gen6 (SNB) GPU stalling

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Message-Id: <f80fcd$h9106@fmsmga001.fm.intel.com>
Date:	Tue, 14 Jun 2011 18:23:16 +0100
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Daniel J Blueman <daniel.blueman@...il.com>,
	Eric Anholt <eric@...olt.net>
Cc:	Keith Packard <keithp@...thp.com>,
	Dave Airlie <airlied@...hat.com>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Daniel J Blueman <daniel.blueman@...il.com>
Subject: Re: [PATCH 3.0-rc3] i915: Fix gen6 (SNB) GPU stalling

On Wed, 15 Jun 2011 00:51:47 +0800, Daniel J Blueman <daniel.blueman@...il.com> wrote:
> True; that is quite heavy handed delay looping.
> 
> It's a pity the usual Intel font didn't make it to the programmer's
> reference manuals. Anyway, unmasking the blitter user interrupt in the hardware
> status mask register addresses the root cause. Out of reset it's FFFFFFFFh,
> so we don't need to read it here.
> 
> It would be good to get this into -rc4. -stable probably needs some additional
> tweaks.
> 
> Signed-off-by: Daniel J Blueman <daniel.blueman@...il.com>

Tested-by: Chris Wilson <chris@...is-wilson.co.uk>

Should apply as is and be equally effective for stable.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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