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In order to enable TCE operations support in KVM, we have to inform the KVM about VFIO groups being attached to specific LIOBNs; the necessary bits are implemented already by IOMMU MR and VFIO. This defines get_attr() for the SPAPR TCE IOMMU MR which makes VFIO call the KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE ioctl and establish LIOBN-to-IOMMU link. This changes spapr_tce_set_need_vfio() to avoid TCE table reallocation if the kernel supports the TCE acceleration. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> [aw - remove unnecessary sys/ioctl.h include] Signed-off-by: Alex Williamson <alex.williamson@redhat.com> |
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