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H A Dspapr_pci.c5dd5238c Tue May 24 12:55:04 CDT 2016 Jianjun Duan <duanj@linux.vnet.ibm.com> spapr: ensure device trees are always associated with DRC

There are possible racing situations involving hotplug events and
guest migration. For cases where a hotplug event is migrated, or
the guest is in the process of fetching device tree at the time of
migration, we need to ensure the device tree is created and
associated with the corresponding DRC for devices that were
hotplugged on the source, but 'coldplugged' on the target.

Signed-off-by: Jianjun Duan <duanj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
H A Dspapr.c5dd5238c Tue May 24 12:55:04 CDT 2016 Jianjun Duan <duanj@linux.vnet.ibm.com> spapr: ensure device trees are always associated with DRC

There are possible racing situations involving hotplug events and
guest migration. For cases where a hotplug event is migrated, or
the guest is in the process of fetching device tree at the time of
migration, we need to ensure the device tree is created and
associated with the corresponding DRC for devices that were
hotplugged on the source, but 'coldplugged' on the target.

Signed-off-by: Jianjun Duan <duanj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>