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

[Peter Zijlstra]

On Tue, May 24, 2022 at 06:03:04PM -0700, Luck, Tony wrote:
> 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).

Then use early loading. There's too many fails associated with late
loading.