On 2012-06-08 16:56, Alex Williamson wrote: > The difference between VFIO and kvm device assignment is that VFIO > emulates a lot of config space for us, so most things are passed > through.
That's not different from current device assignment, is it? I think the major difference is that VFIO filters and potentially post-processes the direct writes in kernel space. > MSI and MSIX are unique that we actually do want the qemu > support for helping us to manage them. So we're basically not telling > qemu about anything other than these, and for the most part, that works > since qemu never handles access to the other capabilities. However, I > think you're probably right, VFIO should just walk the capabilities > list, registering each with qemu. It's a little "unnecessary" overhead > from the VFIO perspective, but it makes the VFIO device less unique. > I'll work on adding this. Thanks, Great, thanks! Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
