Messages in this thread | | | Date | Thu, 19 Oct 2017 11:35:42 +0000 (UTC) | From | Mathieu Desnoyers <> | Subject | Re: [RFC PATCH v9 for 4.15 01/14] Restartable sequences system call |
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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
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