[Qemu-devel] [PATCH Part1 3/5] acpi, pc: Add unplug cb for pc machine.

[Tang Chen]

Memory and CPU hot unplug are both asynchronize procedures.
When the unplug operation happens, unplug request cb is called first.
And when ghest OS finished handling unplug, unplug cb will be called
to do the real removal of device.

This patch adds hotunplug cb for pc machine, and memory and CPU
hot unplug will base on it.

Signed-off-by: Tang Chen <address@hidden>
---
 hw/i386/pc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 5c48435..d5073df 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1654,6 +1654,13 @@ static void 
pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
                " type: %s", object_get_typename(OBJECT(dev)));
 }
 
+static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
+                                        DeviceState *dev, Error **errp)
+{
+    error_setg(errp, "acpi: device unplug for not supported device"
+               " type: %s", object_get_typename(OBJECT(dev)));
+}
+
 static HotplugHandler *pc_get_hotpug_handler(MachineState *machine,
                                              DeviceState *dev)
 {
@@ -1761,6 +1768,7 @@ static void pc_machine_class_init(ObjectClass *oc, void 
*data)
     mc->get_hotplug_handler = pc_get_hotpug_handler;
     hc->plug = pc_machine_device_plug_cb;
     hc->unplug_request = pc_machine_device_unplug_request_cb;
+    hc->unplug = pc_machine_device_unplug_cb;
 }
 
 static const TypeInfo pc_machine_info = {
-- 
1.8.4.2