[Qemu-devel] [PATCH RESEND v1 Part1 1/5] acpi, pc: Add hotunplug request cb for pc machine.

[Tang Chen]

Memory and CPU hot unplug are both asynchronous procedures.
They both need unplug request callback to initiate unplug operation.

Add unplug handler to pc machine that will be used by following
CPU and memory unplug patches.
---
 hw/i386/pc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index f31d55e..765ad3c 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1709,6 +1709,13 @@ static void pc_machine_device_plug_cb(HotplugHandler 
*hotplug_dev,
     }
 }
 
+static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
+                                                DeviceState *dev, Error **errp)
+{
+    error_setg(errp, "acpi: device unplug request for not supported device"
+               " type: %s", object_get_typename(OBJECT(dev)));
+}
+
 static HotplugHandler *pc_get_hotpug_handler(MachineState *machine,
                                              DeviceState *dev)
 {
@@ -1831,6 +1838,7 @@ static void pc_machine_class_init(ObjectClass *oc, void 
*data)
     pcmc->get_hotplug_handler = mc->get_hotplug_handler;
     mc->get_hotplug_handler = pc_get_hotpug_handler;
     hc->plug = pc_machine_device_plug_cb;
+    hc->unplug_request = pc_machine_device_unplug_request_cb;
 }
 
 static const TypeInfo pc_machine_info = {
-- 
1.8.4.2