Re: cpu_no_speculation omissions?

From: Jiri Kosina
Date: Thu Jul 26 2018 - 09:31:21 EST


On Mon, 16 Jul 2018, Alan Cox wrote:

> > > > At least the Centerton (late-generation Bonnell uarch) Atom family
> > > > is omitted from the cpu_no_speculation table added by commit
> > > > fec9434a12f3 to arch/x86/kernel/cpu/common.c. Is this intentional?
> > > > Would a patch adding it and possibly other omissions be welcome?
> > >
> > > Probably. Dave?
> >
> > IIRC, Alan Cox was compiling a list on what is affected vs. not. He
> > would know way better than I.
>
> The pre Silvermont atom cores are in order. When I did the original
> list I didn't bother with all the 32bit cores as we didn't have any
> 32bit mitigations then.

Now that 32bit PTI is in tip, I believe refresh of that list would be
justified. CCing Joerg.

--
Jiri Kosina
SUSE Labs