[CentOS-devel] Broken hyperthreading on Intel Skylake and Kaby Lake processors

Hi there,

I stumbled upon a thread on debian-devel, regarding hyperthreading problems on Intel Skylake and Kaby Lake processors (discovered in Q2 2016 by the OCaml developers, fixed by Intel in microcode updates in May 2017 - for some, but not all processors [1]). The "safe" solution is to disable hyperthreading in the BIOS, but there's a Perl script telling you if you CPU is affected, or affected and patched in microcode. [2]

Considering that (probably) not all processors are fixed, would this warrant notifying our users via the centos-announce mailing list?

Best regards, Laurențiu

[1] https://lists.debian.org/debian-devel/2017/06/msg00308.html [2] https://lists.debian.org/debian-user/2017/06/msg01011.html