Re: [Qemu-devel] [RESEND PATCH v4 00/10] QEmu memory hot unplug support.

[Tang Chen <tangchen@cn.fujitsu.com>]

On 10/29/2014 05:37 PM, Igor Mammedov wrote:
> On Wed, 22 Oct 2014 18:00:02 +0800
> Tang Chen <tangchen@cn.fujitsu.com> wrote:
>
>> This patch-set implements memory hot-remove for QEmu.
>>
>> Rebased on Igor's asynchronize hotplug framework (qemu v2.1.2, the
>> latest).
>>
>> Approach: QEmu sets GPE status bit, then triggers SCI to notify guest
>> os. Guest os checks device status, and free memory resource if
>> possible, then generate OST.
>>
>> NOTE: In this version, memory hot-remove is independent from _OST,
>>        following Igor's comments.
>>        Patches _OST handling for platforms supporting _OST will come
>>        soon when Igor finishes his refacting for framework of hotplug.
> Refactoring is complete and in tree since 14/Oct,
> Please rebase taking in account changes I've requested before.

Sure, will send a new patch-set soon.

Thanks.

>
>> Change log v3 -> v4 (RESEND):
>> 1. Add new patch 1 ~ 4, fix some small problems in coding.
>> 2. In patch 9, make memory hot-remove independent from _OST.
>> 3. In patch 9, add comment for is_removing flag to document.
>> 4. In patch 10, use macro instead of number.
>> 5. Remove original patch 8 and 12 to coincident with asynchronize
>>     hotplug framework.
>>
>> Hu Tao (4):
>>    acpi, piix4: Add memory hot unplug support for piix4.
>>    pc: Add memory hot unplug support for pc machine.
>>    pc-dimm: Add pc_dimm_unrealize() for memory hot unplug support.
>>    pc, acpi bios: Add memory hot unplug interface.
>>
>> Tang Chen (6):
>>    acpi, mem-hotplug: Use PC_DIMM_SLOT_PROP in acpi_memory_plug_cb().
>>    acpi, mem-hotplug: Add acpi_memory_get_slot_status_descriptor() to
>> get MemStatus.
>>    acpi, mem-hotplug: Add acpi_memory_hotplug_sci() to rise sci for
>>      memory hotplug.
>>    acpi, mem-hotplug: Add acpi_memory_unplug_cb() to implement memory
>>      unplug.
>>    acpi, ich9: Add memory hot unplug support for ich9.
>>    acpi: Add hardware implementation for memory hot unplug.
>>
>>   docs/specs/acpi_mem_hotplug.txt  |  8 +++--
>>   hw/acpi/ich9.c                   | 12 +++++++
>>   hw/acpi/memory_hotplug.c         | 71
>> +++++++++++++++++++++++++++++++---------
>> hw/acpi/piix4.c                  |  6 +++-
>> hw/i386/pc.c                     | 31 ++++++++++++++++++
>> hw/i386/ssdt-mem.dsl             |  5 +++
>> hw/i386/ssdt-misc.dsl            | 13 +++++++-
>> hw/isa/lpc_ich9.c                |  5 +--
>> hw/mem/pc-dimm.c                 | 10 ++++++
>> include/hw/acpi/ich9.h           |  2 ++
>> include/hw/acpi/memory_hotplug.h |  3 ++
>> include/hw/acpi/pc-hotplug.h     |  2 ++ 12 files changed, 146
>> insertions(+), 22 deletions(-)
>>
> .
>