[PATCH kernel v7 00/20] powerpc/powernv/npu, vfio: NVIDIA V100 + P9 passthrough

[Alexey Kardashevskiy <aik@ozlabs.ru>]

My bad, I was not cc-ing everyone but now with v7 I am, sorry about that.


This is for passing through NVIDIA V100 GPUs on POWER9 systems.
20/20 has 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 (both guest and host kernels):
https://github.com/aik/linux/tree/nv2

Matching qemu is pushed to github:
https://github.com/aik/qemu/tree/nv2

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

The individual patches have changelogs. v7 fixes compile warning
and updates a VFIO capability comment in 20/20.

Please comment. Thanks.



Alexey Kardashevskiy (20):
  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/vfio/iommu/kvm: Do not pin device memory
  powerpc/powernv: Move npu struct from pnv_phb to pci_controller
  powerpc/powernv/npu: Move OPAL calls away from context manipulation
  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/npu: Move single TVE handling to NPU PE
  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
  powerpc/powernv/npu: Check mmio_atsd array bounds when populating
  powerpc/powernv/npu: Fault user page into the hypervisor's pagetable
  vfio_pci: Allow mapping extra regions
  vfio_pci: Allow regions to add own capabilities
  vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver

 drivers/vfio/pci/Makefile                     |   1 +
 arch/powerpc/include/asm/iommu.h              |  17 +-
 arch/powerpc/include/asm/mmu_context.h        |  15 +-
 arch/powerpc/include/asm/pci-bridge.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           |  20 +
 include/uapi/linux/vfio.h                     |  37 ++
 arch/powerpc/kernel/iommu.c                   |  69 +--
 arch/powerpc/kvm/book3s_64_vio.c              |  18 +-
 arch/powerpc/mm/mmu_context_iommu.c           | 110 +++-
 arch/powerpc/platforms/powernv/npu-dma.c      | 549 +++++++++++++++---
 arch/powerpc/platforms/powernv/pci-ioda-tce.c |   3 +-
 arch/powerpc/platforms/powernv/pci-ioda.c     | 237 ++++----
 arch/powerpc/platforms/powernv/pci.c          |  43 +-
 arch/powerpc/platforms/pseries/iommu.c        |  88 ++-
 arch/powerpc/platforms/pseries/pci.c          |  22 +
 drivers/vfio/pci/vfio_pci.c                   |  42 +-
 drivers/vfio/pci/vfio_pci_nvlink2.c           | 482 +++++++++++++++
 drivers/vfio/vfio_iommu_spapr_tce.c           |  64 +-
 drivers/vfio/pci/Kconfig                      |   6 +
 22 files changed, 1569 insertions(+), 391 deletions(-)
 create mode 100644 drivers/vfio/pci/trace.h
 create mode 100644 drivers/vfio/pci/vfio_pci_nvlink2.c

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2.17.1