rtl8139 includes a cpu_register_io_memory() in it's vmstate. This
is problematic if the guest undergoes hotplug operations, which can
shift io indexes between migration source and target. Add an
interface to detect this condition and add a subsection, when
necessary, to ensure we migrate to a safe target.
This resolves Juan's concerns about maintaining the migration ABI
and Michael's concerns wrt subsections. Acked by both. Please apply.
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(-)
