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Re: [Qemu-devel] [QEMU PATCH v4 0/6] migration: ensure hotplug and migra
From: |
Jianjun Duan |
Subject: |
Re: [Qemu-devel] [QEMU PATCH v4 0/6] migration: ensure hotplug and migration work together |
Date: |
Tue, 30 Aug 2016 12:56:57 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
Hi Amit,
Have you had a chance to take a look?
Thanks,
Jianjun
On 07/08/2016 03:18 AM, Amit Shah wrote:
> Hi,
>
> I'm going to go through this series soon, and I know Dave is too.
> Please give us some time to go through it.
>
> Thanks,
>
> On (Mon) 27 Jun 2016 [09:59:58], Jianjun Duan wrote:
>> Hi all,
>> The previous patches seem to get buried deep somewhere. I am resending
>> them
>> without RFC tag. Comments are welcome.
>>
>> v4: - Introduce a way to set customized instance_id in SaveStateEntry. Use it
>> to set instance_id for DRC using its unique index to address David
>> Gibson's concern.
>> - Rename VMS_CSTM to VMS_LINKED based on Paolo Bonzini's suggestions.
>> - Clean up qjson stuff in put_qtailq.
>> - Add trace for put_qtailq and get_qtailq based on David Gilbert's
>> suggestion.
>>
>> It is based on David's ppc-for-2.7. Comments are welcome. Previous versions
>> are:
>>
>> v3: - Simplify overall design followng discussion with Paolo. No longer need
>> metadata to migrate QTAILQ.
>> - Extend VMStateInfo instead of adding similar fields to VMStateField.
>> - Clean up macros in qemu/queue.h.
>> (link:
>> https://lists.nongnu.org/archive/html/qemu-devel/2016-05/msg05695.html)
>>
>> v2: - Introduce a general approach to migrate QTAILQ in qemu/queue.h.
>> - Migrate signalled field in the DRC state.
>> - Put the newly added migrating fields in subsections so that backward
>> migration is not broken.
>> - Set detach_cb field right after migration so that a migrated hot-unplug
>> event could finish its course.
>> (link:
>> https://lists.nongnu.org/archive/html/qemu-devel/2016-05/msg04188.html)
>>
>> v1: - Inital version.
>> (link:
>> https://lists.nongnu.org/archive/html/qemu-devel/2016-04/msg02601.html)
>>
>> To make guest device (PCI, CPU and memory) hotplug work together
>> with guest migration, spapr drc state needs be transmitted in
>> migration. This patch defines the VMStateDescription struct for
>> spapr drc state to enable it.
>>
>> To fix the potential racing between hotplug events on guest and
>> guest migration, ccs_list and pending_events of spapr state need be
>> transmitted in migration. This patch also takes care of it.
>>
>> Jianjun Duan (6):
>> migration: alternative way to set instance_id in SaveStateEntry
>> migration: spapr_drc: defined VMStateDescription struct
>> migration: extend VMStateInfo
>> migration: migrate QTAILQ
>> migration: spapr: migrate ccs_list in spapr state
>> migration: spapr: migrate pending_events of spapr state
>>
>> hw/net/vmxnet3.c | 18 +++--
>> hw/nvram/eeprom93xx.c | 6 +-
>> hw/nvram/fw_cfg.c | 6 +-
>> hw/pci/msix.c | 6 +-
>> hw/pci/pci.c | 12 ++--
>> hw/pci/shpc.c | 5 +-
>> hw/ppc/spapr.c | 67 ++++++++++++++++++
>> hw/ppc/spapr_drc.c | 69 +++++++++++++++++++
>> hw/ppc/spapr_events.c | 22 +++---
>> hw/ppc/spapr_pci.c | 22 ++++++
>> hw/scsi/scsi-bus.c | 6 +-
>> hw/timer/twl92230.c | 6 +-
>> hw/usb/redirect.c | 18 +++--
>> hw/virtio/virtio-pci.c | 6 +-
>> hw/virtio/virtio.c | 6 +-
>> include/hw/ppc/spapr.h | 3 +-
>> include/hw/ppc/spapr_drc.h | 9 +++
>> include/hw/qdev-core.h | 6 ++
>> include/migration/vmstate.h | 36 ++++++++--
>> include/qemu/queue.h | 32 +++++++++
>> migration/savevm.c | 25 +++++--
>> migration/vmstate.c | 161
>> ++++++++++++++++++++++++++++++++++----------
>> target-alpha/machine.c | 5 +-
>> target-arm/machine.c | 12 ++--
>> target-i386/machine.c | 21 ++++--
>> target-mips/machine.c | 10 +--
>> target-ppc/machine.c | 10 +--
>> target-sparc/machine.c | 5 +-
>> trace-events | 4 ++
>> 29 files changed, 505 insertions(+), 109 deletions(-)
>>
>> --
>> 1.9.1
>>
>
> Amit
>
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