Hi folks, I have been recently working with VFIO, and particularly trying to achieve device passthrough through multiple layers of virtualization.
I wanted to assess QEMU's performances with nested VFIO, using the emulated Intel IOMMU device. Unfortunately, I cannot make any of my physical device work when I pass them through, attached to the emulated Intel IOMMU. Using regular VFIO works properly, but as soon as I enable the virtual IOMMU, the driver fails to probe (I tried on two different machines with different types of NIC). So I was wondering if someone was aware of any issue with using both VFIO and virtual Intel IOMMU with QEMU? I'm sure I might be missing something obvious but I couldn't find it so far. Thanks, Sebastien _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
