Date: Thu, 21 Jun 2018 08:11:42 -0700 From: Gordon Tetlow <gordon@...lows.org> To: oss-security@...ts.openwall.com Subject: Re: Intel hyper-threading security issues On Thu, Jun 21, 2018 at 4:58 AM, Georgi Guninski <guninski@...inski.com> wrote: > On Thu, Jun 21, 2018 at 07:56:42AM +0300, Georgi Guninski wrote: >> V. Solution >> >> Disable Hyper-Threading Technology on processors that support it. >> > > Is Freebsd safe from this or requires patch? FreeBSD allows disabling of HT processors if the user decides to do so. Add to /boot/loader.conf: machdep.hyperthreading_allowed=0 And reboot the host. Please note this isn't an endorsement of disabling HT, just an explanation of how to do so on FreeBSD. Gordon
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