linux-kernel - Re: [patch 30/60] x86/mm/kpti: Add infrastructure for page table isolation

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Date:   Tue, 5 Dec 2017 16:20:15 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirsky <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Greg KH <gregkh@...uxfoundation.org>, keescook@...gle.com,
        hughd@...gle.com, Brian Gerst <brgerst@...il.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Rik van Riel <riel@...hat.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        David Laight <David.Laight@...lab.com>,
        Eduardo Valentin <eduval@...zon.com>, aliguori@...zon.com,
        Will Deacon <will.deacon@....com>, daniel.gruss@...k.tugraz.at
Subject: Re: [patch 30/60] x86/mm/kpti: Add infrastructure for page table
 isolation

On Mon, Dec 04, 2017 at 03:07:36PM +0100, Thomas Gleixner wrote:
> From: Thomas Gleixner <tglx@...utronix.de>
> 
> Add the initial files for kernel page table isolation, with a minimal init
> function and the boot time detection for this misfeature.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  Documentation/admin-guide/kernel-parameters.txt |    2 
>  arch/x86/boot/compressed/pagetable.c            |    3 
>  arch/x86/entry/calling.h                        |    7 ++
>  arch/x86/include/asm/kpti.h                     |   14 ++++
>  arch/x86/mm/Makefile                            |    7 +-
>  arch/x86/mm/init.c                              |    2 
>  arch/x86/mm/kpti.c                              |   76 ++++++++++++++++++++++++
>  include/linux/kpti.h                            |   11 +++
>  init/main.c                                     |    2 
>  9 files changed, 121 insertions(+), 3 deletions(-)

Nice splitting.

Reviewed-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--