[PATCH kernel 0/2] powerpc/iommu: Redo iommu groups

[Alexey Kardashevskiy <aik@ozlabs.ru>]

The aim is to:

1. simplify the code

2. get rid of iommu_table_group_link.
Now: iommu_table points to a list of iommu_table_group_link which
point to iommu_table_group (powerpc specific part of an IOMMU group);
one iommu_table_group_link per iommu_table_group per IODA PE.

Plan: add support of multiple IODA PEs per one generic IOMMU group,
I am just not sure how yet. We already have a case of GPU+NPU groups,
and a worse one is coming, with 3xGPU + 6xNVLink2.


Please comment. Thanks.



Alexey Kardashevskiy (2):
  powerpc/pseries: Remove IOMMU API support for non-LPAR systems
  powerpc/powernv/pseries: Rework device adding to IOMMU groups

 arch/powerpc/include/asm/iommu.h          | 12 +++----
 arch/powerpc/kernel/iommu.c               | 58 ++-----------------------------
 arch/powerpc/platforms/powernv/pci-ioda.c | 10 +-----
 arch/powerpc/platforms/powernv/pci.c      | 43 ++++++++++++++++++++++-
 arch/powerpc/platforms/pseries/iommu.c    | 55 ++++++++++++++---------------
 5 files changed, 76 insertions(+), 102 deletions(-)

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2.11.0