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

[Tang Chen]

On 10/29/2014 05:37 PM, Igor Mammedov wrote:
> 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.

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(-)
> .