On Fri, Apr 16, 2021 at 04:26:19PM +0200, Auger Eric wrote: > This was largely done during several confs including plumber, KVM forum, > for several years. Also API docs were shared on the ML. I don't remember > any voice was raised at those moments. I don't think anyone objects to the high level ideas, but implementation does matter. I don't think anyone presented "hey we will tunnel an uAPI through VFIO to the IOMMU subsystem" - did they? Look at the fairly simple IMS situation, for example. This was presented at plumbers too, and the slides were great - but the implementation was too hacky. It required a major rework of the x86 interrupt handling before it was OK. Jason