Re: [PATCH kernel v8 00/10] powerpc/kvm/vfio: Enable in-kernel acceleration

[David Gibson <david@gibson.dropbear.id.au>]

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On Fri, Mar 10, 2017 at 02:53:27PM +1100, Alexey Kardashevskiy wrote:
> This is my current queue of patches to add acceleration of TCE
> updates in KVM.
> 
> This is based on Linus'es tree sha1 c1aa905a304e.

I think we're finally there - I've now sent an R-b for all patches.


> 
> Please comment. Thanks.
> 
> Changes:
> v8:
> * kept fixing oddities with error handling in 10/10
> 
> v7:
> * added realmode's WARN_ON_ONCE_RM in arch/powerpc/kvm/book3s_64_vio_hv.c
> 
> v6:
> * reworked the last patch in terms of error handling and parameters checking
> 
> v5:
> * replaced "KVM: PPC: Separate TCE validation from update" with
> "KVM: PPC: iommu: Unify TCE checking"
> * changed already reviewed "powerpc/iommu/vfio_spapr_tce: Cleanup iommu_table disposal"
> * reworked "KVM: PPC: VFIO: Add in-kernel acceleration for VFIO"
> * more details in individual commit logs
> 
> v4:
> * addressed comments from v3
> * updated subject lines with correct component names
> * regrouped the patchset in order:
> 	- powerpc fixes;
> 	- vfio_spapr_tce driver fixes;
> 	- KVM/PPC fixes;
> 	- KVM+PPC+VFIO;
> * everything except last 2 patches have "Reviewed-By: David"
> 
> v3:
> * there was no full repost, only last patch was posted
> 
> v2:
> * 11/11 reworked to use new notifiers, it is rather RFC as it still has
> a issue;
> * got 09/11, 10/11 to use notifiers in 11/11;
> * added rb: David to most of patches and added a comment in 05/11.
> 
> Alexey Kardashevskiy (10):
>   powerpc/mmu: Add real mode support for IOMMU preregistered memory
>   powerpc/powernv/iommu: Add real mode version of
>     iommu_table_ops::exchange()
>   powerpc/iommu/vfio_spapr_tce: Cleanup iommu_table disposal
>   powerpc/vfio_spapr_tce: Add reference counting to iommu_table
>   KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
>   KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently
>   KVM: PPC: Pass kvm* to kvmppc_find_table()
>   KVM: PPC: Use preregistered memory API to access TCE list
>   KVM: PPC: iommu: Unify TCE checking
>   KVM: PPC: VFIO: Add in-kernel acceleration for VFIO
> 
>  Documentation/virtual/kvm/devices/vfio.txt |  22 +-
>  arch/powerpc/include/asm/iommu.h           |  32 ++-
>  arch/powerpc/include/asm/kvm_host.h        |   8 +
>  arch/powerpc/include/asm/kvm_ppc.h         |  12 +-
>  arch/powerpc/include/asm/mmu_context.h     |   4 +
>  include/uapi/linux/kvm.h                   |   9 +
>  arch/powerpc/kernel/iommu.c                |  86 +++++---
>  arch/powerpc/kvm/book3s_64_vio.c           | 330 ++++++++++++++++++++++++++++-
>  arch/powerpc/kvm/book3s_64_vio_hv.c        | 303 ++++++++++++++++++++++----
>  arch/powerpc/kvm/powerpc.c                 |   2 +
>  arch/powerpc/mm/mmu_context_iommu.c        |  39 ++++
>  arch/powerpc/platforms/powernv/pci-ioda.c  |  46 ++--
>  arch/powerpc/platforms/powernv/pci.c       |   1 +
>  arch/powerpc/platforms/pseries/iommu.c     |   3 +-
>  arch/powerpc/platforms/pseries/vio.c       |   2 +-
>  drivers/vfio/vfio_iommu_spapr_tce.c        |   2 +-
>  virt/kvm/vfio.c                            |  60 ++++++
>  arch/powerpc/kvm/Kconfig                   |   1 +
>  18 files changed, 855 insertions(+), 107 deletions(-)
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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