Messages in this thread | | | From | Florian Weimer <> | Subject | Re: x86 CPU features detection for applications (and AMX) | Date | Thu, 08 Jul 2021 16:41:09 +0200 |
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* Dave Hansen:
> That's kinda my whole point. > > These *MUST* be curated to be meaningful. Right now, someone just > dumped a set of CPUID bits into the documentation. > > The interface really needs *three* modes: > > 1. Yes, the CPU/OS supports this feature > 2. No, the CPU/OS doesn't support this feature > 3. Hell if I know, never heard of this feature > > The interface really conflates 2 and 3. To me, that makes it > fundamentally flawed.
That's an interesing point.
3 looks potentially more useful than the feature/usable distinction to me.
The recent RTM change suggests that there are more states, but we probably can't do much about such soft-disable changes.
Thanks, Florian
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