Messages in this thread | | | Date | Tue, 23 Mar 2010 12:40:05 +0100 | Subject | Re: [PATCH] intel-agp.c: Fix crash when accessing nonexistent GTT entries in i915 | From | Miguel Ojeda <> |
| |
On Tue, Mar 23, 2010 at 5:14 AM, Christian Kujau <lists@nerdbynature.de> wrote: > On Mon, 22 Mar 2010 at 20:57, Andrew Morton wrote: >> On Sun, 21 Mar 2010 16:30:20 +0100 Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> wrote: >> > I bisected in order to find the commit 5877960869333e42ebeb733e8d9d5630ff96d350. > > I believe this[0] is fc61901373987ad61851ed001fe971f3ee8d96a3 upstream:
Indeed. Also in
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.32.y.git;a=commit;h=fc61901373987ad61851ed001fe971f3ee8d96a3
> > -------- > agp/intel-agp: Clear entire GTT on startup > > Some BIOSes fail to initialise the GTT, which will cause DMA faults when > the IOMMU is enabled. We need to clear the whole thing to point at the > scratch page, not just the part that Linux is going to use. > > Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> > [anholt: Note that this may also help with stability in the presence of > driver bugs, by not drawing to memory we don't own] > Signed-off-by: Eric Anholt <eric@anholt.net> > -------- > > Christian. > > [0] http://github.com/pfactum/pf-kernel/commit/5877960869333e42ebeb733e8d9d5630ff96d350 > -- > BOFH excuse #384: > > it's an ID-10-T error > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |