[Qemu-devel] [PATCH 0/2] Fix rtl8139 migration with hotplug

[Alex Williamson <alex.williamson@redhat.com>]

Ok, I think this might actually make everyone happy, but I've been
known to be wrong about that many times before.  Juan challenged me
to find an rtl8139 migration scenario that fails when hotplug is
not involved (and not switch device creation order since that's a
usage bug).  I couldn't come up with one.  We had been arguing that
a subsection didn't make sense for the change to rtl8139 vmstate
because the needed function would be {return 1}. but what if we
could detect if the VM had done any other hotplugs and only include
the subsection in those cases.  That's what this short series does.

So, I hope Juan is happy because this preserves the migration ABI
for the majority of the use cases, and I hope Michael is happy
because it does so using a subsection.  Thanks,

Alex

---

Alex Williamson (2):
      rtl8139: Use subsection to restrict migration after hotplug
      qdev: Track runtime machine modifications


 hw/qdev.c    |   10 ++++++++++
 hw/qdev.h    |    1 +
 hw/rtl8139.c |   28 +++++++++++++++++++++++++++-
 3 files changed, 38 insertions(+), 1 deletions(-)