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[Qemu-devel] [RESEND PATCH v3 3/8] pc: Add memory hot unplug support for
From: |
Tang Chen |
Subject: |
[Qemu-devel] [RESEND PATCH v3 3/8] pc: Add memory hot unplug support for pc machine. |
Date: |
Wed, 27 Aug 2014 16:08:34 +0800 |
From: Hu Tao <address@hidden>
Implement device unplug callback for PCMachine. And it now only support
pc-dimm hot-remove. The callback will call piix4 or ich9 callbacks introduced
in previous patches.
Signed-off-by: Hu Tao <address@hidden>
Signed-off-by: Tang Chen <address@hidden>
---
hw/i386/pc.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 8fa8d2f..8bafe7c 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -61,6 +61,8 @@
#include "hw/mem/pc-dimm.h"
#include "trace.h"
#include "qapi/visitor.h"
+#include "hw/acpi/piix4.h"
+#include "hw/i386/ich9.h"
/* debug PC/ISA interrupts */
//#define DEBUG_IRQ
@@ -1607,6 +1609,27 @@ out:
error_propagate(errp, local_err);
}
+static void pc_dimm_unplug(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ Object *acpi_dev;
+ HotplugHandlerClass *hhc;
+ Error *local_err = NULL;
+
+ acpi_dev = (acpi_dev = piix4_pm_find()) ? acpi_dev : ich9_lpc_find();
+ if (!acpi_dev) {
+ error_setg(&local_err,
+ "memory hotplug is not enabled: missing acpi device");
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ hhc = HOTPLUG_HANDLER_GET_CLASS(acpi_dev);
+ hhc->unplug(HOTPLUG_HANDLER(acpi_dev), dev, &local_err);
+
+ error_propagate(errp, local_err);
+}
+
static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -1615,6 +1638,14 @@ static void pc_machine_device_plug_cb(HotplugHandler
*hotplug_dev,
}
}
+static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ pc_dimm_unplug(hotplug_dev, dev, errp);
+ }
+}
+
static HotplugHandler *pc_get_hotpug_handler(MachineState *machine,
DeviceState *dev)
{
@@ -1701,6 +1732,7 @@ 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 = pc_machine_device_unplug_cb;
}
static const TypeInfo pc_machine_info = {
--
1.8.4.2
- [Qemu-devel] [RESEND PATCH v3 0/8] QEmu memory hot unplug support., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 1/8] acpi, piix4: Add memory hot unplug support for piix4., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 2/8] acpi, ich9: Add memory hot unplug support for ich9., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 3/8] pc: Add memory hot unplug support for pc machine.,
Tang Chen <=
- [Qemu-devel] [RESEND PATCH v3 4/8] qdev: Add memory hot unplug support for bus-less devices., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 5/8] pc-dimm: Add pc_dimm_unrealize() for memory hot unplug support., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 6/8] acpi: Add hardware implementation for memory hot unplug., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 7/8] pc, acpi bios: Add memory hot unplug interface., Tang Chen, 2014/08/27
- [Qemu-devel] [RESEND PATCH v3 8/8] monitor: Add memory hot unplug support for device_del command., Tang Chen, 2014/08/27