[PATCH kernel 0/4] vfio/spapr_tce: Reworks for NVIDIA V100 + P9 passthrough (part 1)

[Alexey Kardashevskiy]

This is a first set of patches required for passing through NVIDIA V100
with coherent memory. The full patchset is here:
https://github.com/aik/linux/tree/nv2
The matching QEMU is here:
https://github.com/aik/qemu/tree/nv2

This particular patchset prepares for having device memory which is not
backed with page structs.

Does 4/4 really need splitting?


Please comment. Thanks.



Alexey Kardashevskiy (4):
  powerpc/mm/iommu: Rename mm_iommu_get
  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

 arch/powerpc/include/asm/iommu.h       |  5 +-
 arch/powerpc/include/asm/mmu_context.h |  9 +++-
 arch/powerpc/kernel/iommu.c            |  9 ++--
 arch/powerpc/kvm/book3s_64_vio.c       | 18 ++++---
 arch/powerpc/mm/mmu_context_iommu.c    | 97 +++++++++++++++++++++++++++++-----
 drivers/vfio/vfio_iommu_spapr_tce.c    | 65 +++++++++++++++--------
 6 files changed, 151 insertions(+), 52 deletions(-)

-- 
2.11.0