On Mon, 2017-10-16 at 18:36 +1100, Alexey Kardashevskiy wrote: > > 1. Allow msix mapping to the userspace (to address non-64k-aligned msix bar) > > 2. Allow write combining in vfio for the userspace (kvm guest is kinda > special and may simply ignore mapping flags in some configs but PPC radix > guests still rely on this) Why ? The "G" bit is entirely under control of the guest afaik. This would only affect qemu itself. It's still useful for things like dpdk using vfio. > 3. what callback and where needs to be added to inform HV/PR KVM about VFIO > group, like IOMMUMR::add_vfio_group() proposal or something. Can you elaborate a bit ? I haven't followed this. Cheers, Ben.
