Re: [RFC PATCH V2 11/22] x86/intel_rdt: Associate pseudo-locked regions with its domain

From: Thomas Gleixner
Date: Tue Feb 20 2018 - 12:19:02 EST


On Tue, 20 Feb 2018, Reinette Chatre wrote:
> On 2/20/2018 2:00 AM, Thomas Gleixner wrote:
> > On Mon, 19 Feb 2018, Reinette Chatre wrote:
> >> In addition to the above research from my side I also followed up with
> >> the CPU architects directly to question the usage of these instructions
> >> instead of wbinvd.
> >
> > What was their answer? This really wants a proper explanation and not just
> > experimentation results as it makes absolutely no sense at all.
>
> I always prefer to provide detailed answers but here I find myself at
> the threshold where I may end up sharing information not publicly known.
> This cannot be the first time you find yourself in this situation. How
> do you prefer to proceed?

Well, if it's secret sauce we'll have to accept it. Though it really does
not improve the confidence in all those mechanisms ....

Thanks,

tglx