From a006b67fe4e4954d7f1ca8efbe9082ccefb1ceae Mon Sep 17 00:00:00 2001 From: Matthew Rosato Date: Fri, 4 Mar 2016 12:34:35 -0500 Subject: [PATCH] s390x/cpu: Allow hotplug of CPUs Implement cpu hotplug routine and add the machine hook. Signed-off-by: Matthew Rosato Reviewed-by: David Hildenbrand Message-Id: <1457112875-5209-8-git-send-email-mjrosato@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck --- hw/s390x/s390-virtio-ccw.c | 10 ++++++++++ target-s390x/cpu.c | 7 +++++++ 2 files changed, 17 insertions(+) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 7fc1879538..a84375bd2e 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -186,6 +186,15 @@ static HotplugHandler *s390_get_hotplug_handler(MachineState *machine, return NULL; } +static void s390_hot_add_cpu(const int64_t id, Error **errp) +{ + MachineState *machine = MACHINE(qdev_get_machine()); + Error *err = NULL; + + s390x_new_cpu(machine->cpu_model, id, &err); + error_propagate(errp, err); +} + static void ccw_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); @@ -194,6 +203,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data) mc->init = ccw_init; mc->reset = s390_machine_reset; + mc->hot_add_cpu = s390_hot_add_cpu; mc->block_default_type = IF_VIRTIO; mc->no_cdrom = 1; mc->no_floppy = 1; diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c index 3ae38faccc..1cbf70355d 100644 --- a/target-s390x/cpu.c +++ b/target-s390x/cpu.c @@ -34,6 +34,7 @@ #ifndef CONFIG_USER_ONLY #include "sysemu/arch_init.h" #include "sysemu/sysemu.h" +#include "hw/s390x/sclp.h" #endif #define CR0_RESET 0xE0UL @@ -240,6 +241,12 @@ static void s390_cpu_realizefn(DeviceState *dev, Error **errp) scc->parent_realize(dev, &err); +#if !defined(CONFIG_USER_ONLY) + if (dev->hotplugged) { + raise_irq_cpu_hotplug(); + } +#endif + out: error_propagate(errp, err); }