[Qemu-devel] [PATCH v4 17/17] spapr_pci: emit hotplug add/remove events during hotplug

[Michael Roth <mdroth@linux.vnet.ibm.com>]

From: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>

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 <tyreld@linux.vnet.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 hw/ppc/spapr_pci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 94e33b4..f17f984 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -705,6 +705,9 @@ static void spapr_phb_hot_plug(HotplugHandler *plug_handler,
 
     g_assert(drc);
     spapr_device_hotplug_add(drc, phb, pdev);
+    if (plugged_dev->hotplugged) {
+        spapr_hotplug_req_add_event(drc);
+    }
 }
 
 static void spapr_phb_hot_unplug(HotplugHandler *plug_handler,
@@ -722,6 +725,7 @@ static void spapr_phb_hot_unplug(HotplugHandler *plug_handler,
     }
 
     spapr_device_hotplug_remove(drc, phb, pdev);
+    spapr_hotplug_req_remove_event(drc);
 }
 
 static void spapr_phb_realize(DeviceState *dev, Error **errp)
-- 
1.9.1