From: "H.J. Lu" <hjl.tools@gmail.com>
To: Libc-stable Mailing List <libc-stable@sourceware.org>,
Florian Weimer <fweimer@redhat.com>,
Sunil K Pandey <skpgkp2@gmail.com>
Subject: [2.39 Backport] x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch
Date: Sat, 13 Apr 2024 13:26:24 -0700 [thread overview]
Message-ID: <CAMe9rOo3xyposAws4cUoC5k-C=pXvEEc8ZUZCM9GGvcLeO6bQw@mail.gmail.com> (raw)
Since
commit befe2d3c4dec8be2cdd01a47132e47bdb7020922
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Feb 28 09:51:14 2024 -0800
x86-64: Don't use SSE resolvers for ISA level 3 or above
has been backported to 2.39 branch, I think we should also backport
commit 9f78a7c1d0963282608da836b840f0d5ae1c478e
Author: Sunil K Pandey <skpgkp2@gmail.com>
Date: Tue Feb 13 12:23:14 2024 -0800
x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch
When glibc is built with ISA level 3 or higher by default, the resulting
glibc binaries won't run on SSE or FMA4 processors. Exclude SSE, AVX and
FMA4 variants in libm multiarch when ISA level 3 or higher is enabled by
default.
When glibc is built with ISA level 2 enabled by default, only keep SSE4.1
variant.
Fixes BZ 31335.
--
H.J.
next reply other threads:[~2024-04-13 20:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-13 20:26 H.J. Lu [this message]
2024-04-14 6:31 ` Florian Weimer
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