On Sun, 11 Sep 2022, Felix Miata wrote:
Richard Biener composed on 2022-07-28 11:44 (UTC):
there's been rumors and confusion about ALP raising the x86_64 architecture level to v3 which requires CPUs with AVX2 support and how this will affect openSUSE Factory. Sofar openSUSE Factory was supposed to be not affected but I think it makes sense to re-consider the current -v1 usage given what other distros are doing.
Thus I would propose raising the x86_64 architecture level to x86-64-v2 for openSUSE Factory. v2 requires CMPXCHG16B, [SL]AHF, POPCNT and SSE4_2 (and the predecessor SSE extensions) but not AVX, BMI or FMA.
Intel has apparently released v2 as recently as 2017-Q1 at least (Kaby Lake):
Yes, Intel is known for too much product segmentation by fusing off perfectly usable features from some SKUs. Also for Comet Lake btw (Celeron G5900T). I've just not seen it being done for the Ice Lake family (Tiger Lake, Alder Lake), but you'll never know with Intel. So at least The Celeron G6900T (Alder Lake) now has AVX2 _not_ fused off (ok, they fused off AVX512 instead). Richard.