On Mon, 6 Mar 2023 11:29:53 -0600 (CST)
Timothy Pearson [off-list ref] wrote:

This patch series reenables VFIO support on POWER systems.  It
is based on Alexey Kardashevskiys's patch series, rebased and
successfully tested under QEMU with a Marvell PCIe SATA controller
on a POWER9 Blackbird host.

Alexey Kardashevskiy (3):
  powerpc/iommu: Add "borrowing" iommu_table_group_ops
  powerpc/pci_64: Init pcibios subsys a bit later
  powerpc/iommu: Add iommu_ops to report capabilities and allow blocking
    domains

Timothy Pearson (1):
  Add myself to MAINTAINERS for Power VFIO support

 MAINTAINERS                               |   5 +
 arch/powerpc/include/asm/iommu.h          |   6 +-
 arch/powerpc/include/asm/pci-bridge.h     |   7 +
 arch/powerpc/kernel/iommu.c               | 246 +++++++++++++++++++++-
 arch/powerpc/kernel/pci_64.c              |   2 +-
 arch/powerpc/platforms/powernv/pci-ioda.c |  36 +++-
 arch/powerpc/platforms/pseries/iommu.c    |  27 +++
 arch/powerpc/platforms/pseries/pseries.h  |   4 +
 arch/powerpc/platforms/pseries/setup.c    |   3 +
 drivers/vfio/vfio_iommu_spapr_tce.c       |  96 ++-------
 10 files changed, 338 insertions(+), 94 deletions(-)

For vfio and MAINTAINERS portions,

Acked-by: Alex Williamson <redacted>

I'll note though that spapr_tce_take_ownership() looks like it copied a
bug from the old tce_iommu_take_ownership() where tbl and tbl->it_map
are tested before calling iommu_take_ownership() but not in the unwind
loop, ie. tables we might have skipped on setup are unconditionally
released on unwind.  Thanks,

Alex