Gentoo Archives: gentoo-user

From: Adam Carter <adamcarter3@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Microcode updates for "old" Intel CPU's
Date: Sat, 13 Jan 2018 00:07:01
In Reply to: Re: [gentoo-user] Microcode updates for "old" Intel CPU's by Rich Freeman
> They're new in general - they first appeared last week and they're > being treated as if they're related to Spectre. I've yet to see any > kind of official release of them, but that seems to be par for the > course for AMD the more I hunt around for documentation. It seems > like Suse first released it, and claimed that it disabled branch > prediction, whatever that means (certainly it can't completely disable > it without tanking performance). >
From: "I reached out to AMD and on Friday heard back. They wrote in an email to Phoronix that this Zen/17h microcode update does *not* disable branch prediction. They'll be working with SUSE to re-clarify this microcode update description"