Re: x86 CPU features detection for applications (and AMX)

On 30.06.21 16:34, Florian Weimer wrote:

It breaks integration with system-wide settings, such as user/group
databases, host name lookup, and cryptographic policies.  In many
environments, that is not really an option.

Not necessarily, these can still be applied (and fairly simple).
You actually have to twist more extra knobs if to wanted those weird
things to happen.

The only thing that won't work easily is when the operator forces some
custom libraries to be loaded arbitrarily into all processes. Yes,
somebody could write his own nss plugins, but that's exactly the kind
of audience that does NOT just use those (especially old) binary-only
distros. In over 20 years, being inside dozens of corporations, I've
only seen that exactly once. And it was me doing that.

I actually wonder which kind of binary only application that shall be
that's actually affected by that problem and actually used in the
field that way.

Do you have some actual practical (not theoretical) example ?

By the way: today's method of choice for delivering binary only
software is containers. (and I'd even count things like Steam into
that category).


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287