spapr_pci: emit hotplug add/remove events during hotplug

This uses extension of existing EPOW interrupt/event mechanism
to notify userspace tools like librtas/drmgr to handle
in-guest configuration/cleanup operations in response to
device_add/device_del.

Userspace tools that don't implement this extension will need
to be run manually in response/advance of device_add/device_del,
respectively.

Signed-off-by: Tyrel Datwyler <[email protected]>
Signed-off-by: Michael Roth <[email protected]>
Reviewed-by: David Gibson <[email protected]>
Signed-off-by: David Gibson <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index d2e41619981881d8ca54804dcff2ac4f5732866f..4df3a33db4c5aa61a8ca9321c0e86439bbb9f102 100644 (file)
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1075,6 +1075,9 @@ static void spapr_phb_hot_plug_child(HotplugHandler *plug_handler,
         error_propagate(errp, local_err);
         return;
     }
+    if (plugged_dev->hotplugged) {
+        spapr_hotplug_req_add_event(drc);
+    }
 }
 
 static void spapr_phb_hot_unplug_child(HotplugHandler *plug_handler,
@@ -1101,6 +1104,7 @@ static void spapr_phb_hot_unplug_child(HotplugHandler *plug_handler,
             error_propagate(errp, local_err);
             return;
         }
+        spapr_hotplug_req_remove_event(drc);
     }
 }