Re: [Qemu-ppc] [PATCH v3 0/2] Fix migration of old pseries

[David Gibson]

On Thu, Feb 18, 2016 at 12:32:11PM +0100, Greg Kurz wrote:
> QEMU 2.4 broke the migration of old pseries machine with the addition
> of configuration sections, which are sent unconditionally.
> 
> We assume that QEMU 2.3 is more deployed than any newer release (based on
> the versions currently shipped by most distros). This v3 series hence
> reverses the logic from v2: it now fully fixes migration of old pseries
> from/to QEMU 2.3 and provides a manual workaround for the QEMU 2.4/2.4.1/2.5
> case.
> 
> With this series, I could migrate the same pseries-2.3 instance in a full
> 2.3->2.6->2.5->2.6->2.4->2.6->2.3 cycle.

Sorry, I've lost track slightly here.  Does this series apply on top
of, or instead of your earlier series that peeks for the config
section?

> ---
> 
> Greg Kurz (2):
>       spapr: skip configuration section during migration of older machines
>       migration: allow machine to enforce configuration section migration
> 
> 
>  hw/core/machine.c   |   21 +++++++++++++++++++++
>  hw/ppc/spapr.c      |    1 +
>  include/hw/boards.h |    1 +
>  migration/savevm.c  |   10 ++++++++--
>  qemu-options.hx     |    3 ++-
>  5 files changed, 33 insertions(+), 3 deletions(-)
> 

-- 
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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