I picked this topic out as suggested by Juan. Also I did what Juan has
suggested in previous discussions that I moved lots of global
parameters into MigrationState, and let them be properties. Then we
can use HW_COMPAT_* and "-global migration.xxx=xxx" formular.

If without xen_init(), we can remove more LOC. However there is it, so
I changed the bits as best as I can.

If this can be merged and okay, we can move on to convert more things
into properties for migration.

Please review. Thanks.

Peter Xu (6):
  migration: let MigrationState be a qdev
  migration: move global_state.optional out
  migration: use compat bit for global_state
  migration: move only_migratable to MigrationState
  migration: move skip_configuration out
  migration: move skip_section_footers

 hw/i386/pc_piix.c             |  3 --
 hw/ppc/spapr.c                |  3 --
 include/hw/compat.h           | 12 ++++++
 include/migration/migration.h | 33 +++++++++++++++++
 include/sysemu/sysemu.h       |  1 -
 migration/migration.c         | 85 +++++++++++++++++++++++++++++++------------
 migration/savevm.c            | 22 +++++------
 vl.c                          |  9 ++++-
 8 files changed, 123 insertions(+), 45 deletions(-)

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2.7.4