On Tue, 24 Feb 2026, Ville Syrjälä <[email protected]> wrote: > Although I kinda doubt its actual usefulness to drive useful > fallback logic because often the restrictions might be a combination > of many things, and the kernel can only realistically report one of > those things.
Yeah, this is my main concern as well. The drivers will have to bail out on the first issue they hit, whatever it is. The drivers may choose to do the checks in different orders, resulting in different failure modes for different drivers. And finally, accidentally making the order of the checks part of the ABI contract is a scary prospect. Imagine user space depending on certain checks happening first in order for the fallback logic to work properly. Is it a kernel regression to change the order of the checks then? BR, Jani. -- Jani Nikula, Intel
