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    SubjectRe: [Intel-gfx] agp/intel: can't ioremap flush page - no chipset flushing
    On Fri, Mar 7, 2014 at 2:48 AM, Paul Bolle <pebolle@tiscali.nl> wrote:
    > Bjorn Helgaas schreef op ma 10-02-2014 om 14:33 [-0700]:
    >> I wouldn't start bisecting yet, but if you're in the mood, this
    >> commit: 96702be56037 "Merge branch 'pci/resource' into next" looks
    >> like a good place to start, so you could try the pre-merge commit:
    >> 04f982beb900 "Merge branch 'pci/msi' into next". If 04f982beb900 is
    >> good, there are only about 15 commits on the pci/resource branch to
    >> look at.
    >
    > This might end up not being relevant. And this is surely documented
    > somewhere, but anyhow:
    > - what git magic returns the hashes of the 15 commits that merge commit
    > 96702be56037 added to the tree; and

    "git show 96702be56037" gives:

    commit 96702be560374ee7e7139a34cab03554129abbb4
    Merge: 04f982beb900 d56dbf5bab8c
    ...

    04f982beb900 is the previous HEAD, d56dbf5bab8c is the head of the
    branch merged by this commit. "git log 04f982beb900..96702be56037"
    shows the commits merged.

    > - how can I use the list of those hashes to limit the range of commits
    > to do a git bisect?

    I'm not a git bisect expert, but I *think* you should be able to do
    something like this:

    git bisect start
    git bisect bad 96702be56037
    git bisect good 04f982beb900

    (assuming you've verified that 96702be56037 really *is* bad and
    04f982beb900 really *is* good), and git should checkout something in
    the middle and you can build and test it, then use "git bisect good"
    or "git bisect bad" depending on the result.

    Bjorn


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