On Tue, Apr 19, 2016 at 09:00:27AM -0700, Andy Lutomirski wrote: > On Apr 19, 2016 2:13 AM, "Michael S. Tsirkin" <m...@redhat.com> wrote: > > > > > > I guess you are right in that we should split this part out. > > What I wanted is really the combination > > PASSTHROUGH && !PLATFORM so that we can say "ok we don't > > need to guess, this device actually bypasses the IOMMU". > > What happens when you use a device like this on Xen or with a similar > software translation layer?
I think you don't use it on Xen since virtio doesn't bypass an IOMMU there. If you do you have misconfigured your device. -- MST
