Re: [PATCH v5] x86,cpu-hotplug: assign same CPU number to readded CPU

Mike Galbraith
2014-09-16T03:56:45Z

On Mon, 2014-09-15 at 10:44 -0600, Toshi Kani wrote:
> On Mon, 2014-09-15 at 06:25 +0200, Mike Galbraith wrote:
> > On Thu, 2014-09-11 at 16:21 +0900, Yasuaki Ishimatsu wrote:
> > > There is no response for two months since posting v4.
> > > What can I do for pushing the patch to upstream?
> >
> > Looks to me like we have two patches floating about for more or less the
> > same problem, this one, and...
> >
> > https://lkml.org/lkml/2014/7/29/159
> >
> > ..this one, which you reviewed, and HP both reviewed and tested.
> >
> > We seem to kinda stuck with Boris having said don't diddle the
> > cpu_llc_shared_map, but HP/Intel saying that this map diddling fixes
> > their explosions. If your alternative is preferred over diddling
> > cpu_llc_shared_map, perhaps HP/Intel can test/confirm that their
> > explosions stay gone?
>
> Well, Boris mentioned later in his email:
> https://lkml.org/lkml/2014/7/22/201
>
> And I agree with his assessment that both patches make sense.

Nonetheless, this just reeks of "department of redundancy department".
I have nothing against doing both really, but it does leave me wondering
if we would not then be merging the mask clearing "just because".

-Mike