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Re: [Xen-devel] [qemu-upstream-4.2-testing test] 16779: regressions - FAIL

Ian, Stefano,

--On 1 March 2013 16:15:16 +0000 Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:

Looking at the changes, it seems likely to be related to the migration
dirty bit tracking series.  These were originally written by Anthony
Perard and committed to qemu-upstream-unstable where they work, and
then backported by Alex Blight.

So the problem is probably something in Alex's backports ?

Do we know from the test thing that it's definitely the last patch
in the series (i.e. the specific one indicated)? That last patch is
the only one with substantive modifications to it, and I wasn't
entirely clear what the original code did (as posted here).

Also do we know how to trigger/replicate this (I'm afraid I don't
know how to read the output).

We want to be able to release Xen 4.2 soon.  Our next step is probably
to revert the migration changes so that we have a tree which works as
well as it did before.

Stefano had an alternate way of fixing this though it involved un-inlining
something IIRC. Perhaps I should go back and look at that.

Any ideas Stefano?

Alex Bligh

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