[RFC PATCH v4 1/5] glibc: Perform rseq(2) registration at nptl init and thread creation

[Rich Felker]

On Wed, Nov 21, 2018 at 01:39:32PM -0500, Mathieu Desnoyers wrote:
> Register rseq(2) TLS for each thread (including main), and unregister
> for each thread (excluding main). "rseq" stands for Restartable
> Sequences.

Maybe I'm missing something obvious, but "unregister" does not seem to
be a meaningful operation. Can you clarify what it's for?

Rich