[Qemu-devel] [PATCH v4 00/12] QEmu memory hot unplug support.

[Tang Chen]

This patch-set implements memory hot-remove for QEmu.

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.

Change log v3 -> v4:
1. Add new patch 1 ~ 4, fix some small problems in coding.
2. In patch 10, make memory hot-remove independent from _OST.
3. In patch 10, add comment for is_removing flag to document.
4. In patch 11, use macro instead of number.
5. In patch 12, do not access internal fields of Object outside of object.c

Hu Tao (6):
  acpi, piix4: Add memory hot unplug support for piix4.
  pc: Add memory hot unplug support for pc machine.
  qdev: Add memory hot unplug support for bus-less devices.
  pc-dimm: Add pc_dimm_unrealize() for memory hot unplug support.
  pc, acpi bios: Add memory hot unplug interface.
  monitor: Add memory hot unplug support for device_del command.

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/core/qdev.c                   |  8 +++++
 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 ++
 qdev-monitor.c                   | 46 ++++++++++++++++++++++++++
 14 files changed, 200 insertions(+), 22 deletions(-)

-- 
1.8.4.2