From: Daniel Vetter <daniel@ffwll.ch>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org, ncm@cantrip.org, stable@vger.kernel.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK
Date: Sun, 17 Feb 2013 21:31:28 +0100 [thread overview]
Message-ID: <20130217203128.GL5813@phenom.ffwll.local> (raw)
In-Reply-To: <1360747913-16643-1-git-send-email-chris@chris-wilson.co.uk>
On Wed, Feb 13, 2013 at 09:31:53AM +0000, Chris Wilson wrote:
> Whilst IOMMU is enabled for the Intel GPU on Ironlake, it appears that
> using WC writes to update the PTE on the GPU fail miserably. The result
> looks like the majority of the writes do not land leading to lots of
> screen corruption and a hard system hang.
>
> v2: s/</<=/ to preserve the current exclusion of Sandybridge
>
> Reported-by: Nathan Myers <ncm@cantrip.org>
> Bugzilla: https://bugzilla.freedesktop.org/show_bug.cgi?id=60391
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: stable@vger.kernel.org
Queued for -next with cc: stable removed, since the regression is only in
-next. Thanks for the patch.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
prev parent reply other threads:[~2013-02-17 20:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-13 9:31 [PATCH] drm/i915: Disable WC PTE updates to w/a buggy IOMMU on ILK Chris Wilson
2013-02-13 10:49 ` [Intel-gfx] " Paul Menzel
2013-02-17 20:31 ` Daniel Vetter [this message]
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