[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH v3 00/10] Allow hotplug of s390 CPUs
From: |
Matthew Rosato |
Subject: |
[Qemu-devel] [PATCH v3 00/10] Allow hotplug of s390 CPUs |
Date: |
Wed, 27 Jan 2016 11:53:31 -0500 |
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=<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 <id>', 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
- [Qemu-devel] [PATCH v3 00/10] Allow hotplug of s390 CPUs,
Matthew Rosato <=
- [Qemu-devel] [PATCH v3 01/10] exec: Remove cpu from cpus list during cpu_exec_exit(), Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 10/10] s390x/cpu: Allow hot plug/unplug of CPUs, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 02/10] exec: Do vmstate unregistration from cpu_exec_exit(), Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 05/10] s390x/cpu: Cleanup init in preparation for hotplug, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 08/10] s390x/cpu: Add functions to (un)register CPU state, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 07/10] s390x/cpu: Move some CPU initialization into realize, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 09/10] s390/virtio-ccw: Add hotplug handler and prepare for unplug, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 03/10] cpu: Reclaim vCPU objects, Matthew Rosato, 2016/01/27
- [Qemu-devel] [PATCH v3 04/10] cpu: Add a sync version of cpu_remove(), Matthew Rosato, 2016/01/27