From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Airlie Date: Thu, 14 Jan 2010 00:10:09 +0000 Subject: Re: [drm:drm_mmap_locked] *ERROR* Could not find map: Could this Message-Id: <1263427809.3888.1.camel@localhost> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable To: linux-ia64@vger.kernel.org On Wed, 2010-01-13 at 10:13 -0700, Bjorn Helgaas wrote: > On Wednesday 13 January 2010 12:15:00 am =C3=89meric Maschino wrote: > > 2010/1/11 Bjorn Helgaas : > > > Right? I'm a bit confused because that should have been what you were > > > testing here: http://marc.info/?l=3Dlinux-ia64&m=126290536216298&w=3D= 2, > > > unless you applied the patch by hand and made a mistake. > >=20 > > I've probably incorrectly applied your patches without restarting from > > the original file at each attempt. Anyway, it's fine now, thanks. > >=20 > > > I'm afraid I won't be much help with the DRM issue below. I think > > > you'll have better luck with the dri-devel people now. If this is > > > a regression and you can identify an old working kernel, that might > > > help. > >=20 > > I've performed regression tests. The problem appears with kernel > > 2.6.30. Last working kernel is 2.6.29.6. I'm not a kernel developer, > > but could this be due to this commit > > http://git.kernel.org/?p=3Dlinux/kernel/git/torvalds/linux-2.6.git;a=3D= commitdiff;h=955b12def42e83287c1bdb1411d99451753c1391? >=20 > Nice work identifying working and non-working versions! >=20 > I don't know how much time and energy you want to devote to this, but > I think there are two ways we can make progress: >=20 > 1) Try to convince DRM folks to help debug this. If I had to guess I'd go with b674137755bbe2750f997a2a1264db3cdf8abcb3 But maybe a bisect would be more definite. Dave. >=20 > 2) Use git bisect[1] between v2.6.29 and v2.6.30. This looks like > about 13 kernel rebuild/test cycles. I don't see the stable > releases like 2.6.29.6 in the git repo, but you won't lose much > by starting with 2.6.29. >=20 > [1] http://www.kernel.org/pub/software/scm/git/docs/git-bisect.html >=20 > Bjorn