This enables 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.
This was made on top of both:
[PATCH v1 00/16] powernv: vfio: Add Dynamic DMA windows (DDW)
[PATCH v1 0/7] powerpc/iommu: kvm: Enable MultiTCE support
Alexey Kardashevskiy (13):
KVM: PPC: Account TCE pages in locked_vm
KVM: PPC: Rework kvmppc_spapr_tce_table to support variable page size
KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently
KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_64 capability number
KVM: PPC: Add @offset to kvmppc_spapr_tce_table
KVM: PPC: Add support for 64bit TCE windows
KVM: PPC: Add hugepage support for IOMMU in-kernel handling
KVM: PPC: Add page_shift support for in-kernel H_PUT_TCE/etc handlers
KVM: PPC: Fix kvmppc_gpa_to_hva_and_get() to return host physical
address
KVM: PPC: Associate IOMMU group with guest copy of TCE table
KVM: PPC: vfio kvm device: support spapr tce
KVM: PPC: Add support for IOMMU in-kernel handling
Documentation/virtual/kvm/api.txt | 51 ++++
Documentation/virtual/kvm/devices/vfio.txt | 20 +-
arch/powerpc/include/asm/kvm_host.h | 41 ++-
arch/powerpc/include/asm/kvm_ppc.h | 9 +-
arch/powerpc/include/uapi/asm/kvm.h | 9 +
arch/powerpc/kernel/iommu.c | 6 +-
arch/powerpc/kvm/Kconfig | 2 +
arch/powerpc/kvm/Makefile | 3 +
arch/powerpc/kvm/book3s_64_vio.c | 389 +++++++++++++++++++++++++++--
arch/powerpc/kvm/book3s_64_vio_hv.c | 177 ++++++++++++-
arch/powerpc/kvm/book3s_hv.c | 3 +
arch/powerpc/kvm/powerpc.c | 25 +-
include/uapi/linux/kvm.h | 12 +
virt/kvm/vfio.c | 69 +++++
14 files changed, 775 insertions(+), 41 deletions(-)
--
2.0.0
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