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Subject: Re: Intel's Skylake and Kaby Lake CPUs have nasty microcode bug
To: "Julian H. Stacey" <jhs@berklix.com>, freebsd-hardware@freebsd.org
References: <201706261655.v5QGtiVU084550@fire.js.berklix.net>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <077f54f8-4698-fe39-baf2-75225c7df656@selasky.org>
Date: Mon, 26 Jun 2017 20:39:50 +0200
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On 06/26/17 18:55, Julian H. Stacey wrote:
> FYI:
> https://www.theregister.co.uk/2017/06/25/intel_skylake_kaby_lake_microcode_bug/
> By Richard Chirgwin 25 Jun 2017 at 23:22
> Intel's Skylake and Kaby Lake CPUs have nasty microcode bug
> ...
> "users need to disable hyper-threading "immediately""
> 

For those that cannot turn off HT in the BIOS:

echo machdep.hyperthreading_allowed=0 >> /boot/loader.conf

--HPS