Re: [Qemu-devel] [PATCH V6 0/8] cpu/acpi: convert cpu hot plug to hotplug_handler API

[Michael S. Tsirkin]

On Mon, Nov 03, 2014 at 11:20:31AM +0800, Gu Zheng wrote:
> Hi Michael,
> Could you please have a look at this series?
> 
> Thanks,
> Gu
> On 10/22/2014 11:24 AM, Gu Zheng wrote:

Applied in my tree already, will send upstream after
a bit of testing.
Thanks!

> > Previously we use cpu_added_notifiers to register cpu hotplug notifier 
> > callback
> > which is not able to pass/handle errors, so we switch it to unified hotplug
> > handler API which allows to pass errors and would allow to cancel device_add
> > in case of error.
> > Thanks very much for Igor's review and suggestion.
> > 
> > ---
> > v6:
> >  Patch 8/8:
> >  -using error_abort instead of local_err, so that we can gain the error 
> > report
> >   before abort (suggested by Igor).
> > 
> > v5:
> >  -rebase on the latest upstream and fix some comments.
> >  Patch 4/8:
> >  -split the check out of acpi_dev block.
> >  Patch 5/8:
> >  -move CPU hot-plug notifier cleanup hunk into Patch 6/8.
> >  Patch 6/8:
> >  -delete the caller of notifier_list_notify() in this patch.
> >  Patch 8/8:
> >  -rename acpi_set_local_sts to acpi_set_cpu_present_bit for better 
> > readability.
> > 
> > v4:
> >  -split removal of CPU hotplug notifier into separate patch (Patch 6/8).
> >  Patch 1/7:
> >  -convert CPUState *cpu to DeviceState *dev like it's done for other 
> > handlers
> >   and do cast to CPU inside.
> >  Patch 5/7:
> >  -Make rtc_state as a link property in PCMachine rather than the global
> >   variables.
> >  -Split out the removal of unused notifier into separate patch.
> >  -Check the result of plug callback before update rtc_state.
> > 
> > v3:
> >  -deal with start-up cpus in pc_cpu_plug as Igor suggested.
> > 
> > v2:
> >  -Add 3 new patches(5/7,6/7,7/7), delete original patch 5/5.
> >   1/5-->1/7
> >   2/5-->2/7
> >   3/5-->3/7
> >   4/5-->4/7
> >  Patch 1/7:
> >  -add errp argument to catch error.
> >  -return error instead of aborting if cpu id is invalid.
> >  -make acpi_cpu_plug_cb as a wrapper around AcpiCpuHotplug_add.
> >  Patch 3/7:
> >  -remove unused AcpiCpuHotplug_add directly.
> >  Patch 5/7:
> >  -switch the last user of cpu hotplug notifier to hotplug handler API, and
> >   remove the unused cpu hotplug notify.
> >  Patch 6/7:
> >  -split the function rename (just cleanup) into single patch.
> >  Patch 7/7:
> >  -introduce help function acpi_set_local_sts to keep the bit setting in
> >   one place.
> > ---
> > 
> > Gu Zheng (8):
> >   acpi/cpu: add cpu hotplug callback function to match hotplug_handler
> >     API
> >   acpi:ich9: convert cpu hotplug to hotplug_handler API
> >   acpi:piix4: convert cpu hotplug to hotplug_handler API
> >   pc: add cpu hotplug handler to PC_MACHINE
> >   pc: Update rtc_cmos in pc_cpu_plug
> >   qom/cpu: remove the unused CPU hot-plug notifier
> >   cpu-hotplug: rename function for better readability
> >   acpi/cpu-hotplug: introduce helper function to keep bit setting in
> >     one place
> > 
> >  hw/acpi/cpu_hotplug.c         |   34 ++++++++++++++-------
> >  hw/acpi/ich9.c                |   17 ++--------
> >  hw/acpi/piix4.c               |   18 ++---------
> >  hw/i386/pc.c                  |   65 
> > +++++++++++++++++++++++++++--------------
> >  hw/i386/pc_piix.c             |    2 +-
> >  hw/i386/pc_q35.c              |    2 +-
> >  include/hw/acpi/cpu_hotplug.h |    7 ++--
> >  include/hw/acpi/ich9.h        |    1 -
> >  include/hw/i386/pc.h          |    3 +-
> >  include/sysemu/sysemu.h       |    3 --
> >  qom/cpu.c                     |   10 ------
> >  11 files changed, 82 insertions(+), 80 deletions(-)
> > 
>