linux-kernel - Re: [patch V181 00/54] x86/pti: Final XMAS release

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Date:   Thu, 21 Dec 2017 19:39:19 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
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>,
        Borislav Petkov <bpetkov@...e.de>,
        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>,
        Vlastimil Babka <vbabka@...e.cz>, daniel.gruss@...k.tugraz.at
Subject: Re: [patch V181 00/54] x86/pti: Final XMAS release

On Thu, 21 Dec 2017, Kirill A. Shutemov wrote:
> On Thu, Dec 21, 2017 at 03:57:02PM +0300, Kirill A. Shutemov wrote:
> > On Wed, Dec 20, 2017 at 10:35:03PM +0100, Thomas Gleixner wrote:
> > > The series is also available from git:
> > > 
> > >   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/pti
> > 
> > The patchset looks sane in 5-level paging configuration as long as commit
> > c739f930be1d ("x86/espfix/64: Fix espfix double-fault handling on 5-level
> > systems") from tip/x86/urgent is applied.
> > 
> > Tested-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> 
> Failed to boot with EFI. I don't think it's limited to 5-level paging.

Uuurg. That's there forever.

> The fix is below.

Thanks for catching and fixing that.

       tglx