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

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Date:   Thu, 21 Dec 2017 10:57:30 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     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>,
        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 12/20/2017 04:35 PM, Thomas Gleixner wrote:
> Changes since V163:
>
>   - Moved the cpu entry area out of the fixmap because that caused failures
>     due to fixmap size and cleanup_highmap() zapping fixmap PTEs.
>
>   - Moved all cpu entry area related code into separate files. The
>     hodgepodge in cpu/common.c was really not appropriate.
>
>   - Folded Juergens XEN PV fix for vsyscall
>
>   - Folded Peters ACCESS bit simplification
>
>   - Cleaned up and fixed dump_pagetables
>
>   - Added Vlastimils PTI/NOPTI marker for dumpstack
>
>   - Addressed various minor review comments
>
>   Diffstat against V163 appended.
>
> Thanks to everyone who looked and cared!
>
> It's perfect now because I'm going to have quiet holidays no matter what.
>
> Nevertheless, please review and test the hell out of it.

Passed my nightly tests, with both baremetal and various Xen guests.

-boris

>
> The lot is based on:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/pti.entry
>
> The series is also available from git:
>
>   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/pti
>
> The patch tarball is at:
>
>   https://tglx.de/~tglx/patches-pti-181.tar.bz2
>
>   sha1sum of decompressed tarball: 3b9c1729efe58e793a40031f54e82cac8aba3884
>
> Thanks,
>
> 	tglx
>
> ---
>
>  Documentation/x86/x86_64/mm.txt         |    4 
>  arch/x86/Kconfig                        |    3 
>  arch/x86/entry/vsyscall/vsyscall_64.c   |    7 -
>  arch/x86/events/intel/ds.c              |   53 ++++++----
>  arch/x86/include/asm/cpu_entry_area.h   |   87 +++++++++++++++++
>  arch/x86/include/asm/desc.h             |    1 
>  arch/x86/include/asm/fixmap.h           |   96 -------------------
>  arch/x86/include/asm/pgtable.h          |    4 
>  arch/x86/include/asm/pgtable_32_types.h |   15 ++-
>  arch/x86/include/asm/pgtable_64_types.h |   55 ++++++-----
>  arch/x86/kernel/cpu/common.c            |  126 -------------------------
>  arch/x86/kernel/dumpstack.c             |    7 +
>  arch/x86/kernel/tls.c                   |   11 --
>  arch/x86/kernel/traps.c                 |    6 -
>  arch/x86/mm/Makefile                    |    8 -
>  arch/x86/mm/cpu_entry_area.c            |  159 ++++++++++++++++++++++++++++++++
>  arch/x86/mm/dump_pagetables.c           |  105 ++++++++++++---------
>  arch/x86/mm/init_32.c                   |    6 +
>  arch/x86/mm/kasan_init_64.c             |    6 -
>  arch/x86/mm/pgtable_32.c                |    1 
>  arch/x86/mm/pti.c                       |   52 +++++-----
>  arch/x86/xen/mmu_pv.c                   |    2 
>  22 files changed, 449 insertions(+), 365 deletions(-)
>