Date: Thu, 12 Jul 2018 20:52:29 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Mark Johnston <markj@freebsd.org> Cc: freebsd-arch@freebsd.org Subject: Re: early x86 microcode loading Message-ID: <50839.1531428749@critter.freebsd.dk> In-Reply-To: <20180712183116.GB15892@raichu> References: <20180712183116.GB15892@raichu>
next in thread | previous in thread | raw e-mail | index | archive | help
-------- In message <20180712183116.GB15892@raichu>, Mark Johnston writes: >My plan is to extend cpucontrol(8) to determine the >correct microcode update for the running system, and have the devcpu-data >port install the corresponding file to /boot/firmware. This is problematic when a diskimage is migrated to a different CPU, only on the second reboot on the new hardware are you certain to have the correct microcode. For images which are resurrected on demand on whatever hardware is available this really problematic. NB: before anybody misunderstands: This is not a problem for guest systems under virtualization - they don't need microcode updates. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?50839.1531428749>