linux-kernel - Re: KASAN vs. boot-time switching between 4- and 5-level paging

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Message-ID: <20170724121331.k3fl4xjrsmznqk2t@node.shutemov.name>
Date:   Mon, 24 Jul 2017 15:13:31 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "x86@...nel.org" <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        linux-arch <linux-arch@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>
Subject: Re: KASAN vs. boot-time switching between 4- and 5-level paging

On Thu, Jul 13, 2017 at 05:19:22PM +0300, Andrey Ryabinin wrote:
> >> https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git/commit/?h=la57/boot-switching/v2&id=13327fec85ffe95d9c8a3f57ba174bf5d5c1fb01
> >>
> >>> As for KASAN, I think it would be better just to make it work faster,
> >>> the patch below demonstrates the idea.
> >>
> >> Okay, let me test this.
> > 
> > The patch works for me.
> > 
> > The problem is not exclusive to 5-level paging, so could you prepare and
> > push proper patch upstream?
> > 
> 
> Sure, will do

Andrey, any follow up on this?

-- 
 Kirill A. Shutemov