[Bug string/30994] REP MOVSB performance suffers from page aliasing on Zen 4

[meta at freebsd dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30994

Koichiro Iwao <meta at freebsd dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |meta at freebsd dot org

--- Comment #15 from Koichiro Iwao <meta at freebsd dot org> ---
Hi, 

This causes segfault on bhvye hypervisor running on Ryzen processors. 

FreeBSD folks are also investigating the issue from hypervisor's side but I
would like to let you know that this caused an issue because of the change to
keep your eyes on this.

- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279901
- https://bugs.almalinux.org/view.php?id=489
- https://bbs.archlinux.org/viewtopic.php?id=295802

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