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

[Igor Mammedov]

On Wed, 22 Oct 2014 18:00:02 +0800
Tang Chen <address@hidden> 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.

> 
> 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(-)
>