On Wed, Jul 01, 2020 at 01:42:09PM +0100, Christoph Hellwig wrote: > On Wed, Jul 01, 2020 at 12:02:57PM +0100, Giovanni Cabiddu wrote: > > This patchset defines a blocklist of devices in the vfio-pci module and adds > > the current generation of Intel(R) QuickAssist devices to it as they are > > not designed to run in an untrusted environment. > > How can they not be safe? If any device is not safe to assign the > whole vfio concept has major issues that we need to fix for real instead > of coming up with quirk lists for specific IDs.
No answer yet: how is this device able to bypass the IOMMU? Don't we have a fundamental model flaw if a random device can bypass the IOMMU protection? Except for an ATS bug I can't really think of a way how a device could bypass the IOMMU, and in that case we should just disable ATS.
