This small series introduces the vfio_register_event_notifier()
helper which allows to set up/tear down the VFIO signalling of eventfd
for ERR, REQ and INTX irq indices.

On top of that, a new irq index is planned to signal DMA faults
in nested mode use case. This would use exactly the same mechanics.

Eric Auger (2):
  vfio-pci: Introduce vfio_register_event_notifier helper
  vfio-pci: Use vfio_register_event_notifier in vfio_intx_enable_kvm

 hw/vfio/pci.c | 329 ++++++++++++++++++++------------------------------
 1 file changed, 134 insertions(+), 195 deletions(-)

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2.17.2