Re: [Qemu-devel] [PATCH v3 0/7] cpu: add i386 cpu hot remove support

[Eduardo Otubo]

On Fri, Jun 26, 2015 at 11=37=43AM +0800, Zhu Guihua wrote:
> Hi,
> On 06/24/2015 09:28 PM, Eduardo Otubo wrote:
> >Hello Zhu,
> >
> >Are you still working on this feature? Could you provide a rebased
> >version of this series?
> 
> Sorry for late reply.
> 
> Yes, we are still working on this feature.
> 
> I have updated my github, you can get the rebased version from it.
> 
> https://github.com/zhuguihua/qemu.git  cpu-hotplug

I'll review and test. I'll also provide my comments on the github as
well. Thanks for the update, Zhu! :)

Regards,

> 
> Thanks,
> Zhu
> 
> >Regards,
> >
> >On Fri, Feb 13, 2015 at 06=40=15PM +0800, Zhu Guihua wrote:
> >>This series is based on chen fan's previous i386 cpu hot remove patchset:
> >>https://lists.nongnu.org/archive/html/qemu-devel/2013-12/msg04266.html
> >>
> >>Via implementing ACPI standard methods _EJ0 in ACPI table, after Guest
> >>OS remove one vCPU online, the fireware will store removed bitmap to
> >>QEMU, then QEMU could know to notify the assigned vCPU of exiting.
> >>Meanwhile, intruduce the QOM command 'device_del' to remove vCPU from
> >>QEMU itself.
> >>
> >>The whole work is based on the new hot plug/unplug framework, ,the unplug 
> >>request
> >>callback does the pre-check and send the request, unplug callback does the
> >>removal handling.
> >>
> >>This series depends on tangchen's common hot plug/unplug enhance patchset.
> >>[PATCH v2 0/5] Common unplug and unplug request cb for memory and CPU 
> >>hot-unplug
> >>https://lists.nongnu.org/archive/html/qemu-devel/2015-01/msg03929.html
> >>
> >>The is the second half of the previous series:
> >>[RFC V2 00/10] cpu: add device_add foo-x86_64-cpu and i386 cpu hot remove 
> >>support
> >>https://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg04779.html
> >>
> >>If you want to test the series, you need to apply the 'device_add 
> >>foo-x86_64-cpu'
> >>patchset first:
> >>[PATCH v4 00/10] cpu: add device_add foo-x86_64-cpu support
> >>https://lists.nongnu.org/archive/html/qemu-devel/2015-02/msg02584.html
> >>
> >>---
> >>Changelog since v2:
> >>  -drop ICC bus impl
> >>  -fix delete cpu exceed 32 issue
> >>  -fix bug about deleting the last cpu
> >>
> >>Changelog since v1:
> >>  -rebase on the latest version.
> >>  -delete patch i386/cpu: add instance finalize callback, and put it into 
> >> patchset
> >>   [PATCH v3 0/6] cpu: add device_add foo-x86_64-cpu support.
> >>
> >>Changelog since RFC:
> >>  -splited the i386 cpu hot remove into single thread.
> >>  -replaced apic_no with apic_id, so does the related stuff to make it
> >>   work with arbitrary CPU hotadd.
> >>  -add the icc_device_unrealize callback to handle apic unrealize.
> >>  -rework on the new hot plug/unplug platform.
> >>---
> >>
> >>Chen Fan (2):
> >>   x86: add x86_cpu_unrealizefn() for cpu apic remove
> >>   cpu hotplug: implement function cpu_status_write() for vcpu ejection
> >>
> >>Gu Zheng (3):
> >>   acpi/cpu: add cpu hot unplug request callback function
> >>   acpi, pc: add cpu hot unplug callback support
> >>   cpus: reclaim allocated vCPU objects
> >>
> >>Zhu Guihua (2):
> >>   acpi, pc: add cpu hot unplug request callback support
> >>   acpi/cpu: add cpu hot unplug callback function
> >>
> >>  cpus.c                            | 44 ++++++++++++++++++++
> >>  hw/acpi/cpu_hotplug.c             | 87 
> >> ++++++++++++++++++++++++++++++++++++---
> >>  hw/acpi/ich9.c                    | 17 ++++++--
> >>  hw/acpi/piix4.c                   | 12 +++++-
> >>  hw/core/qdev.c                    |  2 +-
> >>  hw/i386/acpi-dsdt-cpu-hotplug.dsl | 16 ++++++-
> >>  hw/i386/kvm/apic.c                |  5 +++
> >>  hw/i386/pc.c                      | 68 ++++++++++++++++++++++++++++--
> >>  hw/intc/apic.c                    |  9 ++++
> >>  hw/intc/apic_common.c             | 21 ++++++----
> >>  include/hw/acpi/cpu_hotplug.h     |  8 ++++
> >>  include/hw/i386/apic_internal.h   |  1 +
> >>  include/hw/qdev-core.h            |  1 +
> >>  include/qom/cpu.h                 |  9 ++++
> >>  include/sysemu/kvm.h              |  1 +
> >>  kvm-all.c                         | 57 ++++++++++++++++++++++++-
> >>  target-i386/cpu.c                 | 46 +++++++++++++++++++++
> >>  17 files changed, 377 insertions(+), 27 deletions(-)
> >>
> >>-- 
> >>1.9.3
> >>
> >>
> 
> 

-- 
Eduardo Otubo
ProfitBricks GmbH

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