@@ -211,6 +211,21 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
acpi_memory_hotplug_sci(ar, irq);
}
+void acpi_memory_unplug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp)
+{
+ MemStatus *mdev;
+
+ mdev = acpi_memory_get_slot_status_descriptor(mem_st, dev, errp);
+ if (!mdev)
+ return;
+
+ mdev->is_removing = true;
+
+ /* Do ACPI magic */
+ acpi_memory_hotplug_sci(ar, irq);
+}
+
static const VMStateDescription vmstate_memhp_sts = {
.name = "memory hotplug device state",
.version_id = 1,
@@ -11,6 +11,7 @@ typedef struct MemStatus {
DeviceState *dimm;
bool is_enabled;
bool is_inserting;
+ bool is_removing;
uint32_t ost_event;
uint32_t ost_status;
} MemStatus;
@@ -28,6 +29,8 @@ void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
DeviceState *dev, Error **errp);
+void acpi_memory_unplug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
+ DeviceState *dev, Error **errp);
extern const VMStateDescription vmstate_memory_hotplug;
#define VMSTATE_MEMORY_HOTPLUG(memhp, state) \
Add a new bool member named is_removing to MemStatus indicating that the memory solt is being removed. Set it to true in acpi_memory_unplug_cb(), and send SCI to guest. Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> --- hw/acpi/memory_hotplug.c | 15 +++++++++++++++ include/hw/acpi/memory_hotplug.h | 3 +++ 2 files changed, 18 insertions(+)