[Qemu-devel] [PATCH v4 00/17] Convert VFIO-PCI to realize

[Eric Auger]

This series converts VFIO-PCI to realize. It also aims at improving
the error reporting in case of QMP hot-plug.

Before the series, a device_add failure would have reported:
{"error": {"class": "GenericError", "desc": "Device initialization
failed"}}.

Now the actual error cause is reported.

A side effect of this series is the cleanup of the error handling
in vfio-platform.

Git Information:
https://github.com/eauger/qemu/tree/v2.7.0_vfio_realize_v4

History:
v3 -> v4:
- added vfio: Pass an Error object to vfio_connect_container

v2 -> v3:
- Addressed Markus' comments :
  - don't use local error object if not necessary
  - fix some error handling: see individual patches
  - use error objects also on vfio platform realize path although
    hot-plug is not allowed, but that's cleaner I think.
  - bug fix in vfio platform

v1 -> v2:
- Error object is cascaded downto vfio_intx_enable, vfio_add_capabilities
  vfio_pci_igd_opregion_init, vfio_get_group, vfio_get_device
- Actual migration to realize happens at a later stage following Markus'
  guidance
- special handling of the case where the end-user omits the host property
- error_setg_errno now uses positive errno
- more detailed commit message
- fix "cannot enable AER cannot" functional change


Eric Auger (17):
  vfio/pci: Use local error object in vfio_initfn
  vfio/pci: Pass an error object to vfio_populate_vga
  vfio/pci: Pass an error object to vfio_populate_device
  vfio/pci: Pass an error object to vfio_msix_early_setup
  vfio/pci: Pass an error object to vfio_intx_enable
  vfio/pci: Pass an error object to vfio_add_capabilities
  vfio/pci: Pass an error object to vfio_pci_igd_opregion_init
  vfio: Pass an Error object to vfio_connect_container
  vfio: Pass an error object to vfio_get_group
  vfio: Pass an error object to vfio_get_device
  vfio/platform: Pass an error object to vfio_populate_device
  vfio/platform: fix a wrong returned value in vfio_populate_device
  vfio/platform: Pass an error object to vfio_base_device_init
  vfio/pci: Conversion to realize
  vfio/pci: Remove vfio_msix_early_setup returned value
  vfio/pci: Remove vfio_populate_device returned value
  vfio/pci: Handle host oversight

 hw/vfio/common.c              |  68 ++++++-----
 hw/vfio/pci-quirks.c          |  14 ++-
 hw/vfio/pci.c                 | 271 +++++++++++++++++++++++-------------------
 hw/vfio/pci.h                 |   5 +-
 hw/vfio/platform.c            |  65 +++++-----
 hw/vfio/trace-events          |   2 +-
 include/hw/vfio/vfio-common.h |   7 +-
 7 files changed, 244 insertions(+), 188 deletions(-)

-- 
1.9.1