From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter 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 Message-ID: <20130217203128.GL5813@phenom.ffwll.local> References: <1360747913-16643-1-git-send-email-chris@chris-wilson.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1360747913-16643-1-git-send-email-chris@chris-wilson.co.uk> Sender: stable-owner@vger.kernel.org To: Chris Wilson Cc: intel-gfx@lists.freedesktop.org, ncm@cantrip.org, stable@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org 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/ > Reported-by: Nathan Myers > Bugzilla: https://bugzilla.freedesktop.org/show_bug.cgi?id=60391 > Signed-off-by: Chris Wilson > 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