[Qemu-devel] [PATCH RFC v6 00/11] vfio-pci: pass the aer error to guest

[Chen Fan]

For now, for vfio pci passthough devices when qemu receives
an error from host aer report, there just terminate the guest,
but usually user want to know what error occurred but stop the
guest, so this patches add aer capability support for vfio device,
and pass the error to guest, and have guest driver to recover
from the error.
and turning on SERR# for error forwording in bridge control register
patch in seabios has been merged.

v5-v6:
   1. add secondary bus callbacks to reset host bus.

v3-v4:
   1. add 'x-aer' for user to off aer capability.
   2. refactor vfio device to parse extended capabilities.

v2-v3:
   1. refactor vfio device to parse extended capability.
   2. add global property for piix4 to disable vfio aer cap.

v1-v2:
   1. turn on SERR# for bridge control register in firmware.
   2. initilize aer capability for vfio device.
   3. fix some trivial bug.


Chen Fan (11):
  vfio: add pcie extanded capability support
  aer: impove pcie_aer_init to support vfio device
  vfio: add aer support for vfio device
  pcie_aer: expose pcie_aer_msg() interface
  vfio-pci: pass the aer error to guest
  vfio: add 'aer' property to expose aercap
  pc: add HW_COMPAT_2_2 to disable aercap for vifo device
  vfio: extract vfio_get_hot_reset_info as a single function
  qdev: add bus reset_notifiers callbacks for host bus reset
  vfio: squeeze out vfio_pci_do_hot_reset for support bus reset
  vfio: add bus reset notifier for host bus reset

 hw/i386/pc_q35.c                   |   4 +
 hw/pci-bridge/ioh3420.c            |   2 +-
 hw/pci-bridge/xio3130_downstream.c |   2 +-
 hw/pci-bridge/xio3130_upstream.c   |   2 +-
 hw/pci/pci.c                       |   6 +
 hw/pci/pci_bridge.c                |   3 +
 hw/pci/pcie_aer.c                  |   6 +-
 hw/vfio/pci.c                      | 455 +++++++++++++++++++++++++++++++------
 include/hw/compat.h                |   8 +
 include/hw/pci/pci.h               |   2 +
 include/hw/pci/pci_bus.h           |   2 +
 include/hw/pci/pcie_aer.h          |   3 +-
 12 files changed, 415 insertions(+), 80 deletions(-)

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1.9.3