[PATCH 0/5] Fix vIOMMU reset order

[Eric Auger]

This is a follow-up of Peter's attempt to fix the fact that
vIOMMUs are likely to be reset before the device they protect:

[PATCH 0/4] intel_iommu: Reset vIOMMU after all the rest of devices
https://lore.kernel.org/all/20240117091559.144730-1-peterx@redhat.com/

This is especially observed with virtio devices when a qmp system_reset
command is sent but also with VFIO devices.

This series puts the vIOMMU reset in the 3-phase exit callback.

This scheme was tested successful with virtio-devices and some
VFIO devices. Nevertheless not all the topologies have been
tested yet.

Best Regards

Eric

This series can be found at:
https://github.com/eauger/qemu/tree/viommu-3phase-reset-v1

Eric Auger (4):
  hw/virtio/virtio-iommu: Migrate to 3-phase reset
  hw/i386/intel-iommu: Migrate to 3-phase reset
  hw/arm/smmuv3: Move reset to exit phase
  hw/vfio/common: Add a trace point in vfio_reset_handler

Peter Xu (1):
  hw/i386/intel_iommu: Tear down address spaces before IOMMU reset

 hw/arm/smmuv3.c          |  9 +++++----
 hw/i386/intel_iommu.c    | 10 ++++++----
 hw/vfio/common.c         |  1 +
 hw/virtio/virtio-iommu.c |  9 +++++----
 hw/arm/trace-events      |  1 +
 hw/i386/trace-events     |  1 +
 hw/vfio/trace-events     |  1 +
 hw/virtio/trace-events   |  2 +-
 8 files changed, 21 insertions(+), 13 deletions(-)

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2.47.1