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From: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
To: Bharata B Rao <bharata@linux.vnet.ibm.com>, qemu-devel@nongnu.org
Cc: imammedo@redhat.com, mdroth@linux.vnet.ibm.com,
	Nathan Fontenot <nfont@linux.vnet.ibm.com>,
	agraf@suse.de
Subject: Re: [Qemu-devel] [RFC PATCH v1 00/13] CPU and Memory hotplug for PowerPC guests
Date: Thu, 29 Jan 2015 14:14:48 -0800	[thread overview]
Message-ID: <54CAB0D8.4010405@linux.vnet.ibm.com> (raw)
In-Reply-To: <1420697420-16053-1-git-send-email-bharata@linux.vnet.ibm.com>

On 01/07/2015 10:10 PM, Bharata B Rao wrote:
> This patchset enables CPU and memory hotplug support for PowerPC guests.

I missed seeing this as the qemu-ppc list was not included. Can you
please add myself and Nathan on Cc in the future as well.

Tyrel

> 
> 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(-)
> 

      parent reply	other threads:[~2015-01-29 22:15 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
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 [this message]

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