Re: [PATCH] x86/gen-cpuid: correct cycle detection

2025-08-29 Thread Andrew Cooper
On 16/07/2025 7:59 am, Jan Beulich wrote: > With the processing done linearly (rather than recursively), checking > whether any of the features was previously seen is wrong: That would > e.g. trigger for this simple set of dependencies > > X: [A, B] > A: [C] > B: [C] > > (observed in re

[PATCH] x86/gen-cpuid: correct cycle detection

2025-07-16 Thread Jan Beulich
With the processing done linearly (rather than recursively), checking whether any of the features was previously seen is wrong: That would e.g. trigger for this simple set of dependencies X: [A, B] A: [C] B: [C] (observed in reality when making AMX-AVX512 dependent upon both AMX-TILE