Re: [RFC PATCH 3/3] x86/microcode: Taint and warn on late loading

From: Luck, Tony
Date: Tue May 24 2022 - 21:03:13 EST


On Tue, May 24, 2022 at 08:53:24PM +0200, Borislav Petkov wrote:
> + add_taint(TAINT_CPU_OUT_OF_SPEC, LOCKDEP_STILL_OK);

Seems harsh. Updating microcode to the latest is arguably the
way to make sure that your CPU stays "IN_SPEC" (since the microcode
may have a fix for a functional issue).

-Tony