From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60365) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aOTLs-0006mk-4p for qemu-devel@nongnu.org; Wed, 27 Jan 2016 11:53:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aOTLn-0003gT-LX for qemu-devel@nongnu.org; Wed, 27 Jan 2016 11:53:52 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:44953) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aOTLn-0003fh-FC for qemu-devel@nongnu.org; Wed, 27 Jan 2016 11:53:47 -0500 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 27 Jan 2016 09:53:44 -0700 Received: from b01cxnp22034.gho.pok.ibm.com (b01cxnp22034.gho.pok.ibm.com [9.57.198.24]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 85DCF1FF0045 for ; Wed, 27 Jan 2016 09:41:52 -0700 (MST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0RGrf8K30343222 for ; Wed, 27 Jan 2016 16:53:42 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0RGrfhP002976 for ; Wed, 27 Jan 2016 11:53:41 -0500 From: Matthew Rosato Date: Wed, 27 Jan 2016 11:53:31 -0500 Message-Id: <1453913621-20961-1-git-send-email-mjrosato@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v3 00/10] Allow hotplug of s390 CPUs List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: agraf@suse.de, borntraeger@de.ibm.com, bharata@linux.vnet.ibm.com, cornelia.huck@de.ibm.com, pbonzini@redhat.com, afaerber@suse.de, rth@twiddle.net Changes from v2->v3: * Call cpu_remove_sync rather than cpu_remove(). * Pull latest version of patches from pseries set (v6). Trivial change to "Reclaim VCPU objects" to fix checkpatch error. * Add object_unparent during s390_cpu_release to accomodate changes in Patch 4 "Reclaim VCPU objects." * Remove a cleanup patch in favor of 2 patches from pseries set. ************** The following patchset enables hotplug of s390 CPUs. The standard interface is used -- to configure a guest with 2 CPUs online at boot and 4 maximum: qemu -smp 2,maxcpus=4 To subsequently hotplug a CPU: Issue 'device_add s390-cpu,id=' from monitor. At this point, the guest must bring the CPU online for use -- This can be achieved via "echo 1 > /sys/devices/system/cpu/cpuX/online" or via a management tool like cpuplugd. Hot unplug support is provided via 'device_del ', however s390 does not have a mechanism for gracefully handling a CPU that has been removed, so this event triggers a reset of the guest in order to force recognition. This patch set is based on work previously done by Jason Herne. Bharata B Rao (3): exec: Remove cpu from cpus list during cpu_exec_exit() exec: Do vmstate unregistration from cpu_exec_exit() cpu: Add a sync version of cpu_remove() Gu Zheng (1): cpu: Reclaim vCPU objects Matthew Rosato (6): s390x/cpu: Cleanup init in preparation for hotplug s390x/cpu: Set initial CPU state in common routine s390x/cpu: Move some CPU initialization into realize s390x/cpu: Add functions to (un)register CPU state s390/virtio-ccw: Add hotplug handler and prepare for unplug s390x/cpu: Allow hot plug/unplug of CPUs cpus.c | 50 +++++++++++++++++++++++++++++++++ exec.c | 30 ++++++++++++++++++++ hw/s390x/s390-virtio-ccw.c | 30 +++++++++++++++++++- hw/s390x/s390-virtio.c | 64 +++++++++++++++++++++++++++++++----------- hw/s390x/s390-virtio.h | 2 +- include/qom/cpu.h | 18 ++++++++++++ include/sysemu/kvm.h | 1 + kvm-all.c | 57 ++++++++++++++++++++++++++++++++++++- kvm-stub.c | 5 ++++ target-s390x/cpu.c | 70 +++++++++++++++++++++++++++++++++++++++++++--- target-s390x/cpu.h | 4 +++ 11 files changed, 308 insertions(+), 23 deletions(-) -- 1.9.1