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[Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC gue
From: |
Bharata B Rao |
Subject: |
[Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests |
Date: |
Thu, 8 Jan 2015 11:40:07 +0530 |
This patchset enables CPU and memory hotplug support for PowerPC guests.
Changes in this patchset (v1):
- Based on top of Michael Roth's tree
(https://github.com/mdroth/qemu/commits/spapr-hotplug-core) which serves
as base for his PCI hotplug patches too.
- Switched to device_add/del semantics instead of cpu-add.
- Supporting CPU hot unplug now.
- Added patches to enable memory hotplug.
- Added ibm,dynamic-reconfiguration-memory support which is needed for
memory hotplug.
v0 - http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg00752.html
CPU hotplug
-----------
- Works with BE guest, has issues with LE guest. Has been tested on BE host
only.
- Adding a core (and all its threads) in response to device_add command.
Similarly removing a core via device_del will remove all the threads.
- Using Gu Zheng's "reclaim vCPU objects" patch to remove and reuse
the vCPU objects after CPUs removal.
(Gu Zheng's original patch:
http://lists.gnu.org/archive/html/qemu-devel/2014-12/msg01829.html)
Memory hotplug
--------------
- Able to get an LMB added with the current patchset, but there are issues
which I am still debugging.
- Re-using pc-dimm infrastructure (hw/mem/pc-dimm.c) to support memory
hotplug on PowerPC.
- Tested with Nathan Fontenot's memory hotplug kernel patches (with additions
to drive memory hotplug from EPOW interrupt path)
(https://www.marc.info/?l=linuxppc-embedded&m=141626066317143&w=2)
Bharata B Rao (11):
spapr: Add DRC dt entries for CPUs
spapr: Consider max_cpus during xics initialization
spapr: Factor out CPU initialization code into realizefn
spapr: Support ibm,lrdr-capacity device tree property
spapr: CPU hotplug support
spapr: Start all the threads of CPU core when core is hotplugged
spapr: Enable CPU hotplug for POWER8 CPU family
spapr: CPU hot unplug support
spapr: Initialize hotplug memory address space
spapr: Support ibm,dynamic-reconfiguration-memory
spapr: Memory hotplug support
Gu Zheng (1):
cpus, spapr: reclaim allocated vCPU objects
Michael Roth (1):
spapr: enable PHB/CPU/LMB hotplug for pseries-2.3
cpus.c | 44 +++
default-configs/ppc64-softmmu.mak | 1 +
hw/ppc/spapr.c | 744 ++++++++++++++++++++++++++++++++++----
hw/ppc/spapr_events.c | 11 +-
hw/ppc/spapr_hcall.c | 51 ++-
hw/ppc/spapr_rtas.c | 28 +-
include/hw/ppc/spapr.h | 27 +-
include/qom/cpu.h | 11 +
include/sysemu/kvm.h | 1 +
kvm-all.c | 57 ++-
target-ppc/translate_init.c | 50 ++-
11 files changed, 918 insertions(+), 107 deletions(-)
--
2.1.0
- [Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests,
Bharata B Rao <=
- [Qemu-devel] [RFC PATCH v1 11/13] spapr: Initialize hotplug memory address space, Bharata B Rao, 2015/01/08
- [Qemu-devel] [RFC PATCH v1 08/13] spapr: Enable CPU hotplug for POWER8 CPU family, Bharata B Rao, 2015/01/08
- [Qemu-devel] [RFC PATCH v1 03/13] spapr: Consider max_cpus during xics initialization, Bharata B Rao, 2015/01/08
- [Qemu-devel] [RFC PATCH v1 04/13] spapr: Factor out CPU initialization code into realizefn, Bharata B Rao, 2015/01/08
- [Qemu-devel] [RFC PATCH v1 01/13] spapr: enable PHB/CPU/LMB hotplug for pseries-2.3, Bharata B Rao, 2015/01/08