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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/27457] vzeroupper use in AVX2 multiarch string functions
 cause HTM aborts
Date: Mon, 29 Mar 2021 23:00:51 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27457

--- Comment #28 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for 2.34 on master so far by 10 commits.  The last commit is

commit e4fda4631017e49d4ee5a2755db34289b6860fa4
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sun Mar 7 09:45:23 2021 -0800

    x86-64: Use ZMM16-ZMM31 in AVX512 memmove family functions

    Update ifunc-memmove.h to select the function optimized with AVX512
    instructions using ZMM16-ZMM31 registers to avoid RTM abort with usable
    AVX512VL since VZEROUPPER isn't needed at function exit.

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