On Mon, Jun 07, 2021 at 02:58:18AM +0000, Tian, Kevin wrote: > Hi, all, <...> > (Remaining opens in v1) <...> > - Device-centric (Jason) vs. group-centric (David) uAPI. David is not fully > convinced yet. Based on discussion v2 will continue to have ioasid uAPI > being device-centric (but it's fine for vfio to be group-centric). A new > section will be added to elaborate this part; <...> > (Adopted suggestions) <...> > - (Jason) Addition of device label allows per-device capability/format > check before IOASIDs are created. This leads to another major uAPI > change in v2 - specify format info when creating an IOASID (mapping > protocol, nesting, coherent, etc.). User is expected to check per-device > format and then set proper format for IOASID upon to-be-attached > device; Sorry for my naive question, I still didn't read all v1 thread and maybe the answer is already written, but will ask anyway. Doesn't this adopted suggestion to allow device-specific configuration actually means that uAPI should be device-centric? User already needs to be aware of device, configure it explicitly, maybe gracefully clean it later, it looks like not so much left to be group-centric. Thanks
