From: Keith Packard <keithp@keithp.com>
To: tino.keitel+xorg@tikei.de, Daniel Vetter <daniel.vetter@ffwll.ch>,
Rocko Requin <rockorequin@hotmail.com>,
intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [Intel-gfx] kernel BUG at drivers/gpu/drm/i915/i915_gem
Date: Fri, 16 Dec 2011 09:06:33 -0800 [thread overview]
Message-ID: <864nx08mzq.fsf@sumi.keithp.com> (raw)
In-Reply-To: <20111216163839.GA7884@x61.home>
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On Fri, 16 Dec 2011 17:38:39 +0100, tino.keitel+xorg@tikei.de wrote:
> Hum, could this be related to the RC6 vs. IOMMU issue? I have
> CONFIG_INTEL_IOMMU enabled in 3.2, and disabled in 3.1, and boot with
> i915.i915_enable_rc6=1.
Very likely -- RC6 and semaphores are not compatible with IOMMU. You
should be able to just disable VTd in your BIOS and use the kernel with
IOMMU enabled.
--
keith.packard@intel.com
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prev parent reply other threads:[~2011-12-16 17:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BAY151-W65C39B54A590BCA4E3AEBDA1B80@phx.gbl>
2011-12-09 17:22 ` kernel BUG at drivers/gpu/drm/i915/i915_gem Daniel Vetter
[not found] ` <BAY151-W537E90462ED274C21FDA4CA1BE0@phx.gbl>
2011-12-10 4:13 ` Daniel Vetter
[not found] ` <BAY151-W53C3AD24F2938042D0F733A1BC0@phx.gbl>
2011-12-14 1:47 ` Daniel Vetter
2011-12-14 19:57 ` tino.keitel+xorg
2011-12-15 18:54 ` tino.keitel+xorg
2011-12-16 16:38 ` tino.keitel+xorg
2011-12-16 17:06 ` Keith Packard [this message]
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