[kernel,0/5] powerpc/powernv/npu: Reworks for NVIDIA V100 + P9 passthrough (part 2)

This is a second 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 patchset reworks NPU DMA code to be used with VFIO. The exported symbols
are called from the NVIDIA driver so they must be able to work in both
powernv and pseries platforms.

This depends on skiboot's "npu2: Clear XTS_BDF_MAP when destroying context for next init_context"
posted earlier today.

Please comment. Thanks.



Alexey Kardashevskiy (5):
  powerpc/powernv/npu: Add helper to access struct npu for NPU device
  powerpc/powernv/npu: Collect all static symbols under one struct
  powerpc/powernv: Detach npu struct from pnv_phb
  powerpc/powernv/npu: Factor out OPAL calls from context manipulation
  powerpc/powernv/npu: Add helper to map GPU to LPAR

 arch/powerpc/include/asm/pci.h            |   4 +
 arch/powerpc/platforms/powernv/pci.h      |  18 +-
 arch/powerpc/platforms/powernv/npu-dma.c  | 298 ++++++++++++++++++++----------
 arch/powerpc/platforms/powernv/pci-ioda.c |   9 +-
 4 files changed, 212 insertions(+), 117 deletions(-)

Strangely Reza is missed by the get_maintainers.pl, adding in cc: :-/


On 15/10/2018 20:32, Alexey Kardashevskiy wrote:
> This is a second 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 patchset reworks NPU DMA code to be used with VFIO. The exported symbols
> are called from the NVIDIA driver so they must be able to work in both
> powernv and pseries platforms.
> 
> This depends on skiboot's "npu2: Clear XTS_BDF_MAP when destroying context for next init_context"
> posted earlier today.
> 
> Please comment. Thanks.
> 
> 
> 
> Alexey Kardashevskiy (5):
>   powerpc/powernv/npu: Add helper to access struct npu for NPU device
>   powerpc/powernv/npu: Collect all static symbols under one struct
>   powerpc/powernv: Detach npu struct from pnv_phb
>   powerpc/powernv/npu: Factor out OPAL calls from context manipulation
>   powerpc/powernv/npu: Add helper to map GPU to LPAR
> 
>  arch/powerpc/include/asm/pci.h            |   4 +
>  arch/powerpc/platforms/powernv/pci.h      |  18 +-
>  arch/powerpc/platforms/powernv/npu-dma.c  | 298 ++++++++++++++++++++----------
>  arch/powerpc/platforms/powernv/pci-ioda.c |   9 +-
>  4 files changed, 212 insertions(+), 117 deletions(-)
>