[PATCH v1 0/7] powerpc/iommu: kvm: Enable MultiTCE support

[Alexey Kardashevskiy <aik@ozlabs.ru>]

This prepares upstream kernel for in-kernel acceleration of TCE hypercalls
(H_PUT_TCE, H_PUT_TCE_INDIRECT, H_STUFF_TCE). This implements acceleration
for both real and virtual modes. As it requires gup() for real mode to
parse TCE list page, this implements gup() for realmode.

This only accelerates emulated PCI and VIO devices. DDW is not affected.

This was made on top of
[PATCH v1 00/16] powernv: vfio: Add Dynamic DMA windows (DDW)



Alexey Kardashevskiy (7):
  powerpc/iommu: Change prototypes for realmode support
  powerpc/iommu: Support real mode
  powerpc/iommu: Clean up IOMMU API
  KVM: PPC: Replace SPAPR_TCE_SHIFT with IOMMU_PAGE_SHIFT_4K
  KVM: PPC: Move reusable bits of H_PUT_TCE handler to helpers
  KVM: PPC: Add kvmppc_find_tce_table()
  KVM: PPC: Add support for multiple-TCE hcalls

 Documentation/virtual/kvm/api.txt         |  26 +++
 arch/powerpc/include/asm/iommu.h          |   9 +-
 arch/powerpc/include/asm/kvm_book3s_64.h  |   2 -
 arch/powerpc/include/asm/kvm_host.h       |  30 +++
 arch/powerpc/include/asm/kvm_ppc.h        |  16 ++
 arch/powerpc/kernel/iommu.c               | 140 +++++++-----
 arch/powerpc/kvm/book3s_64_vio.c          | 177 ++++++++++++++-
 arch/powerpc/kvm/book3s_64_vio_hv.c       | 343 ++++++++++++++++++++++++++----
 arch/powerpc/kvm/book3s_hv.c              |  30 ++-
 arch/powerpc/kvm/book3s_hv_rmhandlers.S   |   4 +-
 arch/powerpc/kvm/book3s_pr.c              |   4 +
 arch/powerpc/kvm/book3s_pr_papr.c         |  35 +++
 arch/powerpc/kvm/powerpc.c                |   3 +
 arch/powerpc/platforms/powernv/pci-ioda.c |   3 +-
 drivers/vfio/vfio_iommu_spapr_tce.c       |   6 +-
 15 files changed, 720 insertions(+), 108 deletions(-)

-- 
2.0.0