Messages in this thread | | | Date | Wed, 9 Jun 2021 12:01:49 +0300 | From | Leon Romanovsky <> | Subject | Re: Plan for /dev/ioasid RFC v2 |
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On Mon, Jun 07, 2021 at 02:58:18AM +0000, Tian, Kevin wrote: > Hi, all,
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> (Remaining opens in v1)
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> - 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;
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> (Adopted suggestions)
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> - (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
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