[kernel,v3,00/22] powerpc/powernv/npu, vfio: NVIDIA V100 + P9 passthrough

This is for passing through NVIDIA V100 GPUs on POWER9 systems.
7/7 and https://github.com/aik/linux/commit/f41f5666d27b31c1
have the details of hardware setup.

This implements support for NVIDIA V100 GPU with coherent memory and
NPU/ATS support available in the POWER9 CPU. The aim is to support
unmodified vendor driver in the guest.

This is pushed to github:
https://github.com/aik/qemu/tree/nv2-stage4

The host and guest kernel tree is pushed on github as well:
https://github.com/aik/linux/tree/nv2-stage4

Skiboot bits are here:
https://github.com/aik/skiboot/tree/nv2-stage4

Please comment. Thanks.



Alexey Kardashevskiy (22):
  powerpc/ioda/npu: Call skiboot's hot reset hook when disabling NPU2
  powerpc/mm/iommu/vfio_spapr_tce: Change mm_iommu_get to reference a
    region
  powerpc/mm/iommu: Make mm_iommu_new() fail on existing regions
  powerpc/vfio/iommu/kvm: Do not pin device memory
  powerpc/powernv/npu: Add helper to access struct npu for NPU device
  powerpc/powernv: Detach npu struct from pnv_phb
  powerpc/powernv/npu: Move OPAL calls away from context manipulation
  powerpc/pseries/iommu: Allow dynamic window to start from zero
  powerpc/pseries/iommu: Force default DMA window removal
  powerpc/pseries/iommu: Use memory@ nodes in max RAM address
    calculation
  powerpc/pseries/npu: Enable platform support
  powerpc/pseries: Remove IOMMU API support for non-LPAR systems
  powerpc/powernv/pseries: Rework device adding to IOMMU groups
  powerpc/iommu_api: Move IOMMU groups setup to a single place
  powerpc/powernv: Reference iommu_table while it is linked to a group
  powerpc/powernv: Add purge cache OPAL call
  powerpc/powernv/npu: Convert NPU IOMMU helpers to
    iommu_table_group_ops
  powerpc/powernv/npu: Add compound IOMMU groups
  powerpc/powernv/npu: Add release_ownership hook
  vfio_pci: Allow mapping extra regions
  vfio_pci: Allow regions to add own capabilities
  vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] [10de:1db1] subdriver

 drivers/vfio/pci/Makefile                     |   1 +
 arch/powerpc/include/asm/iommu.h              |  17 +-
 arch/powerpc/include/asm/mmu_context.h        |   9 +-
 arch/powerpc/include/asm/opal-api.h           |   3 +-
 arch/powerpc/include/asm/opal.h               |   1 +
 arch/powerpc/include/asm/pci.h                |   4 +
 arch/powerpc/platforms/powernv/pci.h          |  30 +-
 drivers/vfio/pci/trace.h                      | 102 ++++
 drivers/vfio/pci/vfio_pci_private.h           |   8 +
 include/uapi/linux/vfio.h                     |  26 +
 arch/powerpc/kernel/iommu.c                   |  67 +--
 arch/powerpc/kvm/book3s_64_vio.c              |  18 +-
 arch/powerpc/mm/mmu_context_iommu.c           | 100 +++-
 arch/powerpc/platforms/powernv/npu-dma.c      | 531 +++++++++++++++---
 arch/powerpc/platforms/powernv/opal.c         |   1 +
 arch/powerpc/platforms/powernv/pci-ioda-tce.c |   3 +-
 arch/powerpc/platforms/powernv/pci-ioda.c     | 229 ++++----
 arch/powerpc/platforms/powernv/pci.c          |  43 +-
 arch/powerpc/platforms/pseries/iommu.c        | 134 +++--
 arch/powerpc/platforms/pseries/pci.c          |   6 +
 drivers/vfio/pci/vfio_pci.c                   |  54 +-
 drivers/vfio/pci/vfio_pci_nvlink2.c           | 433 ++++++++++++++
 drivers/vfio/vfio_iommu_spapr_tce.c           |  65 ++-
 .../powerpc/platforms/powernv/opal-wrappers.S |   1 +
 drivers/vfio/pci/Kconfig                      |   6 +
 25 files changed, 1497 insertions(+), 395 deletions(-)
 create mode 100644 drivers/vfio/pci/trace.h
 create mode 100644 drivers/vfio/pci/vfio_pci_nvlink2.c