Re: [Qemu-devel] [PATCH 00/12] cpu: add i386 cpu hot remove support

[Gu Zheng]

ping...
On 12/12/2014 04:43 PM, Gu Zheng 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] Common unplug and unplug request cb for memory and CPU hot-unplug.
> https://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01462.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 V2 0/6] cpu: add device_add foo-x86_64-cpu support
> https://lists.nongnu.org/archive/html/qemu-devel/2014-12/msg01812.html
> 
> ---
> 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 (6):
>   i386/cpu: add instance finalize callback
>   acpi/cpu: add cpu hot unplug request callback function
>   acpi/piix4: add cpu hot unplug callback support
>   acpi/ich9: add cpu hot unplug support
>   pc: add cpu hot unplug callback support
>   cpus: reclaim allocated vCPU objects
> 
> Zhu Guihua (4):
>   acpi/piix4: add cpu hot unplug request callback support
>   acpi/ich9: add cpu hot unplug request callback support
>   pc: add cpu hot unplug request callback support
>   acpi/cpu: add cpu hot unplug callback function
> 
>  cpus.c                            |   44 ++++++++++++++++++
>  hw/acpi/cpu_hotplug.c             |   88 
> ++++++++++++++++++++++++++++++++++---
>  hw/acpi/ich9.c                    |   17 +++++--
>  hw/acpi/piix4.c                   |   12 ++++-
>  hw/core/qdev.c                    |    2 +-
>  hw/cpu/icc_bus.c                  |   11 +++++
>  hw/i386/acpi-dsdt-cpu-hotplug.dsl |    6 ++-
>  hw/i386/kvm/apic.c                |    8 +++
>  hw/i386/pc.c                      |   62 ++++++++++++++++++++++++--
>  hw/intc/apic.c                    |   10 ++++
>  hw/intc/apic_common.c             |   21 +++++---
>  include/hw/acpi/cpu_hotplug.h     |    8 +++
>  include/hw/cpu/icc_bus.h          |    1 +
>  include/hw/i386/apic_internal.h   |    1 +
>  include/hw/qdev-core.h            |    1 +
>  include/qom/cpu.h                 |   10 ++++
>  include/sysemu/kvm.h              |    1 +
>  kvm-all.c                         |   57 +++++++++++++++++++++++-
>  target-i386/cpu.c                 |   54 ++++++++++++++++++++++
>  19 files changed, 387 insertions(+), 27 deletions(-)
>