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[Qemu-ppc] [PATCH v4 0/9] Core based CPU hotplug for PowerPC sPAPR
From: |
Bharata B Rao |
Subject: |
[Qemu-ppc] [PATCH v4 0/9] Core based CPU hotplug for PowerPC sPAPR |
Date: |
Fri, 10 Jun 2016 06:28:59 +0530 |
Hi,
This is the next version of the CPU hotplug patchset for PowerPC
sPAPR target. The hotplug semantics looks like this:
(qemu) device_add POWER8E-spapr-cpu-core,id=core2,core-id=16[,threads=4]
(qemu) device_add host-spapr-cpu-core,id=core2,core-id=16[,threads=4]
(qemu) device_add POWER8E_v2.1-spapr-cpu-core,id=core2,core-id=16[,threads=4]
Changes in v4
-------------
- Rebased against David Gibson's ppc-cpu-hotplug and hence dropped those
patches that are already part of that tree.
- We were assuming the CPU thread to be always of type PowerPCCPU which
needn't be true. Hence use actual CPU type's instance_size when
object_initialize'ing the threads as per David's suggestion. This requires
us to know the instance_size for a given type for which a new QOM API
object_type_get_size() has been introduced in this version.
- Consolidate CPU init related routines in spapr_cpu_core.c. As part of this
move spapr_cpu_init() and its dependencies to spapr_cpu_core.c.
- Got rid of the temporary unplug list when removing CPU cores.
- Folded spapr_cpu_core_create_threads() into spapr_cpu_core_realize() and
fixed the error path in in spapr_cpu_core_realize().
- Add support for -cpu host.
TODOs remaining
---------------
- Work on David's suggestion of intializing CPU's ObjectClass in
class_init rather than instance_init.
- Use object_initialize_with_type instead of object_initialize when
creating CPU threads of a core.
- Use vcpu_dt_id logic when populating core id in
spapr_query_hotpluggable_cpus().
- Handle CPU compat properly (-cpu host,compat=POWER7)
v3: https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg01829.html
Bharata B Rao (7):
qom: API to get instance_size of a type
spapr: Abstract CPU core device and type specific core devices
spapr: Move spapr_cpu_init() to spapr_cpu_core.c
spapr: convert boot CPUs into CPU core devices
spapr: CPU hotplug support
spapr: CPU hot unplug support
hmp: Add 'info hotpluggable-cpus' HMP command
Igor Mammedov (2):
QMP: Add query-hotpluggable-cpus
spapr: implement query-hotpluggable-cpus callback
hmp-commands-info.hx | 14 ++
hmp.c | 41 ++++
hmp.h | 1 +
hw/ppc/Makefile.objs | 1 +
hw/ppc/spapr.c | 215 +++++++++++++++------
hw/ppc/spapr_cpu_core.c | 405 ++++++++++++++++++++++++++++++++++++++++
hw/ppc/spapr_events.c | 3 +
hw/ppc/spapr_rtas.c | 24 +++
include/hw/boards.h | 5 +
include/hw/ppc/spapr.h | 7 +
include/hw/ppc/spapr_cpu_core.h | 36 ++++
include/qom/object.h | 8 +-
monitor.c | 13 ++
qapi-schema.json | 55 ++++++
qmp-commands.hx | 23 +++
qom/object.c | 8 +
target-ppc/kvm.c | 28 +++
17 files changed, 828 insertions(+), 59 deletions(-)
create mode 100644 hw/ppc/spapr_cpu_core.c
create mode 100644 include/hw/ppc/spapr_cpu_core.h
--
2.1.0