Reindl Harald wrote:
> if there would be no difference kernel upstream won't invest that much
> time for runtime-cpu-detection (look at the bootlog on different hardware)
Exactly BECAUSE performance-critical software normally does runtime
detection (except where upstream is really really lazy), hardcoding a
requirement for newer instruction sets does not buy us anything.
The absence of a portable fallback also makes the software unusable on our
secondary architectures, and in some cases (such as Darktable), even on the
PRIMARY architecture ARM. (Now, whether ARM should be a primary architecture
to begin with is a different matter, but it currently is.)
So I really don't understand those upstreams that provide ONLY platform-
specific vector code with no portable version.
Kevin Kofler
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