[Qemu-ppc] MTTCG for ppc64 (removed from ppc-for-2.10)

[David Gibson]

Hi all,

I'm afraid I've pulled the MTTCG enablement patches for target/ppc64
out of my ppc-for-2.10 tree, since I discovered it was causing a
repeatable failure on one of the Travis builds.

Specifically, with both the LL/SC in terms of cmpxchg and
enable-mttcg-by-default patches applied, and qemu build with clang,
then make check will fail with a tcg_abort() in the powernv
boot-serial test.

I don't know if this is an mttcg bug or a clang bug, but either way,
I'm moving these patches to a separate mttcg branch until we can sort
it out.

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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