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    SubjectRe: Linux 3.4-rc4
    On Sun, Apr 22, 2012 at 08:05:54PM -0400, Nick Bowler wrote:
    > On 2012-04-22 12:40 -0400, Nick Bowler wrote:
    > > On 2012-04-21 21:51 -0700, Linus Torvalds wrote:
    > > > Nick, I realize you had trouble with a bisection already, but it might
    > > > really be worth trying again. Do a
    > > >
    > > > git bisect visualize
    > > >
    > > > and try to pick a good commit (avoding the problems you hit) when you
    > > > hit a problem, and then do
    > > >
    > > > git reset --hard <that-point>
    > > >
    > > > to force bisection to try another place. That way you can sometimes
    > > > avoid the problem spots, and continue the bisection.
    > >
    > > Unfortunately, I think the whole swath of commits bisect wants to test
    > > are broken (as in, they panic before I get to see whether or not the VGA
    > > is working), because the commit from which most of the drm trees were
    > > based appears to be broken. Nevertheless, I've included the new bisect
    > > log (four new commits marked skip as opposed to last time). I've also
    > > included the boot log from a crashing kernel, in case someone recognizes
    > > how I can avoid this during bisection. Note that this crash is *not* a
    > > regression that exists in current mainline -- bisecting this issue was
    > > the first time I had ever seen it.
    >
    > Following up on the above, the commit which introduces the panics during
    > boot is this one:

    I think

    dea7e0a ttm: fix agp since ttm tt rework

    fixed that.
    >
    > commit 8e7e70522d760c4ccd4cd370ebfa0ba69e006c6e
    > Author: Jerome Glisse <jglisse@redhat.com>
    > Date: Wed Nov 9 17:15:26 2011 -0500
    >
    > drm/ttm: isolate dma data from ttm_tt V4
    >
    > Move dma data to a superset ttm_dma_tt structure which herit
    > from ttm_tt. This allow driver that don't use dma functionalities
    > to not have to waste memory for it.
    >
    > V2 Rebase on top of no memory account changes (where/when is my
    > delorean when i need it ?)
    > V3 Make sure page list is initialized empty
    > V4 typo/syntax fixes
    >
    > Signed-off-by: Jerome Glisse <jglisse@redhat.com>
    > Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
    >
    > and the previous commit (3230cfc34fca: "drm/nouveau: enable the ttm dma
    > pool when swiotlb is active V3") works properly.
    >
    > Sometime this week I suppose I'll try to track down the commit which
    > fixed the crashes...
    >
    > Cheers,
    > --
    > Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
    >
    > _______________________________________________
    > dri-devel mailing list
    > dri-devel@lists.freedesktop.org
    > http://lists.freedesktop.org/mailman/listinfo/dri-devel


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