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pc: Forbid BSP removal 

Boot CPU is assumed to always present in QEMU code, so
untile that assumptions are gone, deny removal request,
In another words QEMU won't support BSP hot-unplug.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2016-07-18 10:31:22 +02:00 committed by Eduardo Habkost
parent a44a49dbf2
commit 73360e2785
1 changed files with 8 additions and 0 deletions
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8
hw/i386/pc.c
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@ -1803,10 +1803,18 @@ out:
static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp) DeviceState *dev, Error **errp)
{ {
int idx = -1;
HotplugHandlerClass *hhc; HotplugHandlerClass *hhc;
Error *local_err = NULL; Error *local_err = NULL;
PCMachineState *pcms = PC_MACHINE(hotplug_dev); PCMachineState *pcms = PC_MACHINE(hotplug_dev);
pc_find_cpu_slot(pcms, CPU(dev), &idx);
assert(idx != -1);
if (idx == 0) {
error_setg(&local_err, "Boot CPU is unpluggable");
goto out;
}
hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev);
hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err);