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Date: Mon, 17 Jun 2019 00:28:27 +0200 (CEST)
From: Thomas Gleixner <>
To: Andy Lutomirski <>
cc: Dave Hansen <>, 
    Marius Hillenbrand <>, kvm list <>, 
    LKML <>, 
    Kernel Hardening <>, 
    Linux-MM <>, Alexander Graf <>, 
    David Woodhouse <>, 
    the arch/x86 maintainers <>, 
    Peter Zijlstra <>
Subject: Re: [RFC 00/10] Process-local memory allocations for hiding KVM

On Sun, 16 Jun 2019, Andy Lutomirski wrote:
> On Fri, Jun 14, 2019 at 7:21 AM Thomas Gleixner <> wrote:
> > On Wed, 12 Jun 2019, Andy Lutomirski wrote:
> > >
> > > Fair warning: Linus is on record as absolutely hating this idea. He might
> > > change his mind, but it’s an uphill battle.
> >
> > Yes I know, but as a benefit we could get rid of all the GSBASE horrors in
> > the entry code as we could just put the percpu space into the local PGD.
> >
> I have personally suggested this to Linus on a couple of occasions,
> and he seemed quite skeptical.

The only way to find out is the good old: numbers talk ....

So someone has to bite the bullet, implement it and figure out whether it's
bollocks or not. :)



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