From 6f4b5c3ec590b04ba58fda753a81a93f316b77a4 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Fri, 10 Jun 2016 06:29:05 +0530 Subject: spapr: CPU hot unplug support Remove the CPU core device by removing the underlying CPU thread devices. Hot removal of CPU for sPAPR guests is achieved by sending the hot unplug notification to the guest. Release the vCPU object after CPU hot unplug so that vCPU fd can be parked and reused. Signed-off-by: Bharata B Rao Signed-off-by: David Gibson --- hw/ppc/spapr.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'hw/ppc/spapr.c') diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index c444a86..1dcb9f6 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -2313,8 +2313,16 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine()); + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { error_setg(errp, "Memory hot unplug not supported by sPAPR"); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_SPAPR_CPU_CORE)) { + if (!smc->dr_cpu_enabled) { + error_setg(errp, "CPU hot unplug not supported on this machine"); + return; + } + spapr_core_unplug(hotplug_dev, dev, errp); } } -- cgit v1.1