[Qemu-devel] [RESEND PATCH v1 07/13] pc-dimm: Add memory hot unplug request support for pc-dimm.

[Tang Chen]

Implement memory unplug request cb for pc-dimm, and call it in
pc_machine_device_unplug_request_cb().
---
 hw/i386/pc.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 0f3b1e0..f501f1f 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1671,6 +1671,26 @@ out:
     error_propagate(errp, local_err);
 }
 
+static void pc_dimm_unplug_request(HotplugHandler *hotplug_dev,
+                                   DeviceState *dev, Error **errp)
+{
+    HotplugHandlerClass *hhc;
+    Error *local_err = NULL;
+    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
+
+    if (!pcms->acpi_dev) {
+        error_setg(&local_err,
+                   "memory hotplug is not enabled: missing acpi device");
+       goto out;
+    }
+
+    hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev);
+    hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err);
+
+out:
+    error_propagate(errp, local_err);
+}
+
 static void pc_cpu_plug(HotplugHandler *hotplug_dev,
                         DeviceState *dev, Error **errp)
 {
@@ -1713,8 +1733,12 @@ 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)));
+    if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+        pc_dimm_unplug_request(hotplug_dev, dev, errp);
+    } else {
+        error_setg(errp, "acpi: device unplug request for not supported device"
+                   " type: %s", object_get_typename(OBJECT(dev)));
+    }
 }
 
 static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
-- 
1.8.4.2