[Qemu-devel] [PATCH-for-4.2 v3 0/5] ARM SMMUv3: Fix spurious notification errors and assert with vfio

[Eric Auger <eric.auger@redhat.com>]

As of today when a guest is assigned with a host PCI device and
an SMMUv3, VFIO calls memory_region_iommu_replay() default
implementation. This translates the whole address range and
completely stalls the execution. As VFIO/SMMUv3 integration
is not supported yet (it requires SMMUv3 HW nested paging), let's
recognize this situation and simply assert.

Also the series silences some spurious translation configuration
decoding errors (STE out of span or invalid STE) that may happen
on guest IOVA invalidation notifications.

Best Regards

Eric

Eric Auger (5):
  memory: Remove unused memory_region_iommu_replay_all()
  memory: Add IOMMU_ATTR_VFIO_NESTED IOMMU memory region attribute
  hw/vfio/common: Assert in case of nested mode
  hw/arm/smmuv3: Log a guest error when decoding an invalid STE
  hw/arm/smmuv3: Remove spurious error messages on IOVA invalidations

 hw/arm/smmuv3-internal.h |  1 +
 hw/arm/smmuv3.c          | 26 ++++++++++++++++++++------
 hw/vfio/common.c         |  8 ++++++++
 include/exec/memory.h    | 13 ++-----------
 memory.c                 |  9 ---------
 5 files changed, 31 insertions(+), 26 deletions(-)

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2.20.1