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* [Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests
@ 2015-01-08  6:10 Bharata B Rao
  2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 01/13] spapr: enable PHB/CPU/LMB hotplug for pseries-2.3 Bharata B Rao
                   ` (14 more replies)
  0 siblings, 15 replies; 50+ messages in thread
From: Bharata B Rao @ 2015-01-08  6:10 UTC (permalink / raw)
  To: qemu-devel; +Cc: imammedo, Bharata B Rao, mdroth, agraf

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

^ permalink raw reply	[flat|nested] 50+ messages in thread

end of thread, other threads:[~2015-02-24  8:13 UTC | newest]

Thread overview: 50+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-08  6:10 [Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 01/13] spapr: enable PHB/CPU/LMB hotplug for pseries-2.3 Bharata B Rao
2015-01-22 21:08   ` Michael Roth
2015-01-29  1:04   ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 02/13] spapr: Add DRC dt entries for CPUs Bharata B Rao
2015-01-22 21:21   ` Michael Roth
2015-01-29  1:04   ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 03/13] spapr: Consider max_cpus during xics initialization Bharata B Rao
2015-01-29  1:05   ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 04/13] spapr: Factor out CPU initialization code into realizefn Bharata B Rao
2015-01-29  1:07   ` David Gibson
2015-01-30  7:49     ` Bharata B Rao
2015-02-23  7:36       ` Bharata B Rao
2015-02-23 15:19         ` Alexander Graf
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 05/13] spapr: Support ibm, lrdr-capacity device tree property Bharata B Rao
2015-01-22 21:55   ` Michael Roth
2015-01-30  8:51     ` Bharata B Rao
2015-01-29  1:16   ` David Gibson
2015-01-30  7:50     ` Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 06/13] spapr: CPU hotplug support Bharata B Rao
2015-01-22 22:16   ` Michael Roth
2015-01-28  4:19     ` Bharata B Rao
2015-01-28  5:41       ` Michael Roth
2015-01-23 12:41   ` Igor Mammedov
2015-01-30  6:59     ` Bharata B Rao
2015-01-29  1:31   ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 07/13] spapr: Start all the threads of CPU core when core is hotplugged Bharata B Rao
2015-01-29  1:36   ` David Gibson
2015-01-30  8:12     ` Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 08/13] spapr: Enable CPU hotplug for POWER8 CPU family Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 09/13] spapr: CPU hot unplug support Bharata B Rao
2015-01-29  1:39   ` David Gibson
2015-01-30  8:15     ` Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 10/13] cpus, spapr: reclaim allocated vCPU objects Bharata B Rao
2015-01-29  1:48   ` David Gibson
2015-01-30  8:23     ` Bharata B Rao
2015-01-31  0:21       ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 11/13] spapr: Initialize hotplug memory address space Bharata B Rao
2015-02-12  5:19   ` David Gibson
2015-02-12  5:39     ` Bharata B Rao
2015-02-16  4:56       ` David Gibson
2015-02-17  4:00         ` Bharata B Rao
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 12/13] spapr: Support ibm, dynamic-reconfiguration-memory Bharata B Rao
2015-02-12  6:02   ` David Gibson
2015-01-08  6:10 ` [Qemu-devel] [RFC PATCH v1 13/13] spapr: Memory hotplug support Bharata B Rao
2015-02-24  6:26   ` David Gibson
2015-02-24  8:12     ` Bharata B Rao
2015-01-29 17:46 ` [Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests Andreas Färber
2015-02-02  9:00   ` Bharata B Rao
2015-01-29 22:14 ` Tyrel Datwyler

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