linux-kernel - Re: [026/107] drm/i915: Fix gen6 (SNB) missed BLT ring interrupts.

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Date:	Thu, 07 Jul 2011 23:13:33 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Daniel J Blueman <daniel.blueman@...il.com>,
	Eric Anholt <eric@...olt.net>, Dave Airlie <airlied@...hat.com>
Subject: Re: [026/107] drm/i915: Fix gen6 (SNB) missed BLT ring interrupts.

On Thu, 07 Jul 2011 17:15:58 -0700, Greg KH <gregkh@...e.de> wrote:

> 2.6.39-stable review patch.  If anyone has any objections, please let
> us know.

Note that there's a follow-on patch to this which fixes similar hangs
with the BSD ring:

ec6a890dfed7dd245beba5e5bcdfcffbd934c284

    drm/i915: Apply HWSTAM workaround for BSD ring on SandyBridge
    
    ...we need to apply exactly the same workaround for missing interrupts
    from BSD as for the BLT ring, apparently.
    
    See also commit 498e720b96379d8ee9c294950a01534a73defcf3
    (drm/i915: Fix gen6 (SNB) missed BLT ring interrupts).
    
    Reported-and-tested-by: nkalkhof@....de
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38529
    Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
    Signed-off-by: Keith Packard <keithp@...thp.com>

-- 
keith.packard@...el.com

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