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[v2,3/5] acpi, pc: Add unplug cb for pc machine.

Message ID 604726b1e30d0a64de77b8f7b83ba807bcf29ebc.1422429010.git.zhugh.fnst@cn.fujitsu.com
State New
Headers show

Commit Message

Zhu Guihua Jan. 28, 2015, 7:45 a.m. UTC 
From: Tang Chen <tangchen@cn.fujitsu.com>

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

This patch adds hotunplug cb to pc machine, which memory and CPU
hot unplug will use it.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
---
 hw/i386/pc.c | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 15ee10a..850b6b5 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1687,6 +1687,13 @@  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)
 {
@@ -1817,6 +1824,7 @@  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 = {