[Qemu-devel] [PATCH v6 0/8] QEMU memory hot unplug support

[Zhu Guihua <zhugh.fnst@cn.fujitsu.com>]

This patchset adds support to hot unplug memory.

Memory hot unplug is complicated multi-stage process. Unplug request callback
sends remove request. After guest os processes ejection request, OSPM will
execute _EJ0 to signal qemu that a device eject will be to occur. Then qemu
will call unplug callback to eject the device.

v6:
 -improve documentation of memory hot unplug
 -add trace event for device deletion
 -put fix about "Memory device control fields" register in a separate patch

v5:
 -reorganize the patchset
 -add documentation to understand patch easily
 -add MEMORY_SLOT_EJECT for initiating device eject
 -add support to send qmp event to notify mgmt about memory unplug error

v4:
 -reorganize the patchset
 -drop the new API acpi_send_gpe_event()
 -update ssdt-mem

v3:
 -commit message changes
 -reorganize the patchset, squash and separate some patches
 -update specs about acpi_mem_hotplug
 -first cleanup external state, then un-map and un-register memory device

v2:
 -do a generic for acpi to send gpe event
 -unparent object by PC_MACHINE
 -update description in acpi_mem_hotplug.txt
 -combine the last two patches in the last version
 -cleanup external state in acpi_memory_unplug_cb

Tang Chen (3):
  acpi, mem-hotplug: add acpi_memory_slot_status() to get MemStatus
  acpi, mem-hotplug: add unplug request cb for memory device
  acpi, mem-hotplug: add unplug cb for memory device

Zhu Guihua (5):
  docs: update documentation for memory hot unplug
  acpi: extend aml_field() to support UpdateRule
  acpi: fix "Memory device control fields" register
  acpi: add hardware implementation for memory hot unplug
  qmp-event: add event notification for memory hot unplug error

 docs/memory-hotplug.txt           | 23 ++++++++--
 docs/qmp/qmp-events.txt           | 17 +++++++
 docs/specs/acpi_mem_hotplug.txt   | 58 +++++++++++++++++++++--
 hw/acpi/aml-build.c               |  4 +-
 hw/acpi/ich9.c                    | 19 ++++++--
 hw/acpi/memory_hotplug.c          | 96 ++++++++++++++++++++++++++++++++++++---
 hw/acpi/piix4.c                   | 17 +++++--
 hw/core/qdev.c                    |  2 +-
 hw/i386/acpi-build.c              | 25 ++++++++--
 hw/i386/acpi-dsdt-mem-hotplug.dsl | 13 +++++-
 hw/i386/pc.c                      | 62 +++++++++++++++++++++++--
 include/hw/acpi/aml-build.h       | 10 +++-
 include/hw/acpi/memory_hotplug.h  | 12 +++++
 include/hw/acpi/pc-hotplug.h      |  3 ++
 include/hw/qdev-core.h            |  1 +
 monitor.c                         |  1 +
 qapi/event.json                   | 14 ++++++
 trace-events                      |  4 ++
 18 files changed, 346 insertions(+), 35 deletions(-)

-- 
1.9.3