On Mon, Apr 12, 2021 at 04:19:29PM +0200, Florian Weimer wrote: > Maybe we could have done this in 2016 when I reported this for the first > time. Now it is too late, as more and more software is using > CPUID-based detection for AVX-512.
So as I said on another mail today, I don't think a library should rely solely on CPUID-based detection of features especially if those features need kernel support too. IOW, it should ask whether the kernel can handle those too, first. And the CPUID-faulting thing would solve stuff like that because then the kernel can *actually* get involved into answering something where it has a say in, too. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette