Re: [PATCH] x86/Intel: insert Ice Lake and Comet Lake model numbers

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 05/06/2020 08:51, Jan Beulich wrote:
> Both match prior generation processors as far as LBR and C-state MSRs
> go (SDM rev 072) as well as applicability of the if_pschange_mc erratum
> (recent spec updates).
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> ---
> Such changes having been subject to backporting in the past, this
> change may want considering for 4.14.
> ---
> I'm leaving alone spec_ctrl.c, albeit there's a scary looking erratum
> for Ice Lake indicating that MDS_NO may wrongly be set. But this is
> apparently addressed by ucode update, so we may not need to deal with
> it in software.

I've enquired about this.  At a guess, there was another hole found, so
MDS_NO has been cleared and VERW flushing reinstated.

Either way, changes there can wait until we've got confirmation.

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>