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Message-ID: <20220625044724.GB2408@voyager>
Date: Sat, 25 Jun 2022 06:47:24 +0200
From: Markus Wichmann <nullplan@....net>
To: musl@...ts.openwall.com
Cc: mesa-dev@...ts.freedesktop.org
Subject: Re: Fwd: mesa | Remove USE_ELF_TLS macro (!17213)
On Sat, Jun 25, 2022 at 11:36:09AM +0800, 罗勇刚(Yonggang Luo) wrote:
> So I am confused. What's the situation about ELF-TLS support in musl?
> Is that still broken now?
musl has always supported ELF-TLS anywhere except in libc itself. That
was also never the problem. The problem was that the mesa people select
the initial-exec TLS model explicitly, even though libGL ends up being
dlopen()ed quite often, and then you should be using the general-dynamic
model instead.
According to [1], Rich proposed dropping the initial-exec attribute and
replacing it with -mtls-dialect=gnu2 eight years ago. Has that happened
yet? If so, dlopen()ing libGL with musl ought to work.
Ciao,
Markus
[1] https://gitlab.freedesktop.org/mesa/mesa/-/issues/966
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