Kevin, On Sat, Dec 11 2021 at 07:44, Kevin Tian wrote: >> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> >> On Fri, Dec 10 2021 at 08:39, Jason Gunthorpe wrote: >> > It is clever, we don't have an vIOMMU that supplies vIR today, so by >> > definition all guests are excluded and only bare metal works. >> >> Dammit. Now you spilled the beans. :) > > Unfortunately we do have that today. Qemu supports IR for > both AMD and Intel vIOMMU. can you point me to the code? All I can find is drivers/iommu/virtio-iommu.c but I can't find anything vIR related there. Thanks, tglx