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-rw-r--r--hw/acpi/ich9.c10
-rw-r--r--hw/acpi/memory_hotplug.c19
-rw-r--r--hw/acpi/piix4.c6
3 files changed, 32 insertions, 3 deletions
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index 5352e19..b85eed4 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -400,8 +400,14 @@ void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error **errp)
void ich9_pm_device_unplug_request_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
Error **errp)
{
- error_setg(errp, "acpi: device unplug request for not supported device"
- " type: %s", object_get_typename(OBJECT(dev)));
+ if (pm->acpi_memory_hotplug.is_enabled &&
+ object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ acpi_memory_unplug_request_cb(&pm->acpi_regs, pm->irq,
+ &pm->acpi_memory_hotplug, dev, errp);
+ } else {
+ error_setg(errp, "acpi: device unplug request for not supported device"
+ " type: %s", object_get_typename(OBJECT(dev)));
+ }
}
void ich9_pm_device_unplug_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
index 6af9303..42fe668 100644
--- a/hw/acpi/memory_hotplug.c
+++ b/hw/acpi/memory_hotplug.c
@@ -75,6 +75,7 @@ static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr,
case 0x14: /* pack and return is_* fields */
val |= mdev->is_enabled ? 1 : 0;
val |= mdev->is_inserting ? 2 : 0;
+ val |= mdev->is_removing ? 4 : 0;
trace_mhp_acpi_read_flags(mem_st->selector, val);
break;
default:
@@ -218,6 +219,24 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
return;
}
+void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
+ MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp)
+{
+ MemStatus *mdev;
+
+ mdev = acpi_memory_slot_status(mem_st, dev, errp);
+ if (!mdev) {
+ return;
+ }
+
+ mdev->is_removing = true;
+
+ /* Do ACPI magic */
+ ar->gpe.sts[0] |= ACPI_MEMORY_HOTPLUG_STATUS;
+ acpi_update_sci(ar, irq);
+}
+
static const VMStateDescription vmstate_memhp_sts = {
.name = "memory hotplug device state",
.version_id = 1,
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index d1f1179..f716e91 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -361,7 +361,11 @@ static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
{
PIIX4PMState *s = PIIX4_PM(hotplug_dev);
- if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ if (s->acpi_memory_hotplug.is_enabled &&
+ object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ acpi_memory_unplug_request_cb(&s->ar, s->irq, &s->acpi_memory_hotplug,
+ dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
acpi_pcihp_device_unplug_cb(&s->ar, s->irq, &s->acpi_pci_hotplug, dev,
errp);
} else {