On 27/06/17 10:08, Laurentiu Pancescu wrote:
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
I have a potentially affected system. I've filed a bug with Red Hat to request microcode_ctl be updated to include the latest microcode:
https://bugzilla.redhat.com/show_bug.cgi?id=1465631
I can confirm the issue is not fixed in the current RHEL7.4beta microcode_ctl package.
In the meantime I've manually applied the microcode update on my affected system.
phil