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From: DJ Delorie <dj@redhat.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: libc-alpha@sourceware.org
Subject: Re: tunables vs osxsave vs checkpointing vs _dl_runtime_resolve
In-Reply-To: <87r1kcqsf0.fsf@oldenburg.str.redhat.com> (message from Florian
 Weimer on Thu, 18 Mar 2021 18:32:19 +0100)
Date: Thu, 18 Mar 2021 13:47:43 -0400
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Florian Weimer <fweimer@redhat.com> writes:
> What happens if you migrate to a machine that has XSAVE/XSAVEC, but
> requires more storage?

We'd need a new tunable to always use the maximum size, or some
specified size, I suppose.  But there are limits to the miracles we can
perform, and "size" is not the root problem - the layout changes too!

> I expect that this is the case that people actually care about these
> days. 8-)

In this case, they just want to disable xsave completely, so it's as
portable as possible.