From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mathieu Desnoyers <mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org>
Subject: Re: [RFC PATCH v9 for 4.15 01/14] Restartable sequences system call
Date: Thu, 19 Oct 2017 11:35:42 +0000 (UTC)
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Speaking of optimization, I think the rseq.c helper library
(and eventually glibc) should define the __rseq_abi TLS
variable with __attribute__((tls_model("initial-exec"))).
It provides faster, and signal-safe, accesses to the TLS
variable from libraries.

The idea you were suggesting where the application could
override the glibc symbol with its own just ends up enforcing
an initial-exec model, but it looks like we can do this
directly from the library.

Thoughts ?

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com