[Qemu-devel] [PATCH v2 0/3] qdev: Hotplug handler chaining

[David Hildenbrand <david@redhat.com>]

Can somebody please pick this up in the near future? (@Eduardo, @MST,
@Paolo, @David - I have no idea who the right person is :) )

The longer we wait, the more likely it is that some stuff gets upstreamed
that conflicts with patch 1 and will break unnoticed. (e.g. spapr PHB
hotplug was just upstreamed and required a fixup, luckily I was CC'ed on
that one).

---

This series implements support for hotplug handler chaining (proposed
by Igor), something that is necessary to turn selected virtio devices into
memory devices. Planned devices inlude virtio-mem and virtio-pmem.

The machine hotplug handler can intercept hotplug handler calls
to properly prepare/teardown the memory device part of a device. Control
is then passed on to the actual bus hotplug handler. So the default hotplug
handler is effectively overwritten to make interception possible.

This series was tested against the - now upstream - device unplug tests
part of "tests/device-plug-test".

v1 -> v2:
- Fixed spapr PHB unplug which was just upstreamed

RFCv2 -> v1:
- "qdev: Let the hotplug_handler_unplug() caller delete the device"
-- Fixed two spapr delete_device() calls I missed. Covered by tests now
-- Handle + add a comment for host pci bridge unplug, for which we have
   code but no user yet.
- virtio-pmem prototype will be handled from this point by Pankaj again,
  so no longer included

David Hildenbrand (2):
  qdev: Let the hotplug_handler_unplug() caller delete the device
  qdev: Provide qdev_get_bus_hotplug_handler()

Igor Mammedov (1):
  qdev: Let machine hotplug handler to override bus hotplug handler

 hw/acpi/cpu.c            |  1 +
 hw/acpi/memory_hotplug.c |  1 +
 hw/acpi/pcihp.c          |  3 ++-
 hw/core/qdev.c           | 19 ++++++++++++-------
 hw/i386/pc.c             |  5 ++---
 hw/pci/pci.c             |  3 ++-
 hw/pci/pcie.c            |  3 ++-
 hw/pci/shpc.c            |  3 ++-
 hw/ppc/spapr.c           |  9 ++++++---
 hw/ppc/spapr_pci.c       |  3 ++-
 hw/s390x/css-bridge.c    |  2 +-
 hw/s390x/s390-pci-bus.c  | 13 ++++++++-----
 include/hw/qdev-core.h   | 12 ++++++++++++
 qdev-monitor.c           |  9 +++++++--
 14 files changed, 60 insertions(+), 26 deletions(-)

-- 
2.17.2