From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg KH Subject: Re: [PATCH] drm/i915: disable cpu relocs on ilk and earlier Date: Mon, 15 Oct 2012 08:11:19 -0700 Message-ID: <20121015151119.GB30606@kroah.com> References: <1350288682-6236-1-git-send-email-daniel.vetter@ffwll.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1350288682-6236-1-git-send-email-daniel.vetter@ffwll.ch> Sender: linux-kernel-owner@vger.kernel.org To: Daniel Vetter Cc: Intel Graphics Development , LKML , Dave Airlie , Chris Wilson , stable@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org On Mon, Oct 15, 2012 at 10:11:22AM +0200, Daniel Vetter wrote: > Hi Greg&stable-team, > > The below patch papers over a graphics corruption issue in 3.5/3.6. The > regression happened due to pwrite tunings in 3.5, which made cpu relocations > much more likely. > > The issue seems to have disappeared in 3.7-rc1, but it takes a few days to test > a patch, so we haven't figured out what exactly fixed things. Now users are > taking out their pitchforks already, so instead of wasting more days (maybe > weeks?) to fully understand the bug before backporting the fix, we've opted for > the below disable patch, which should have minimal impact (at most it undoes the > tuning improvements in 3.5). > > Patch is tested by reporters & acked by all relevant ppl, please apply to > 3.5/3.6 series kernels. No, I'd really like to wait until you figure out what is happening in 3.7-rc1 right now before applying the patch. We have the rule, "it must be in Linus's tree first" for a very good reason :) So, I'll hold onto this until you say what's up with 3.7-rc1, ok? thanks, greg k-h