linux-kernel - Re: [PATCH v3 23/34] xtensa: mm: Add p?d

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMo8Bf+W3o+ZfTztNyCJVs1CDshB_=3hhCne6MY6v=PD=GqLUg@mail.gmail.com>
Date:   Wed, 27 Feb 2019 09:29:45 -0800
From:   Max Filippov <jcmvbkbc@...il.com>
To:     Steven Price <steven.price@....com>
Cc:     linux-mm@...ck.org, Andy Lutomirski <luto@...nel.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, Borislav Petkov <bp@...en8.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        James Morse <james.morse@....com>,
        Jérôme Glisse <jglisse@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will.deacon@....com>,
        "maintainer:X86 ARCHITECTURE..." <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        linux-arm-kernel@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        Mark Rutland <Mark.Rutland@....com>,
        "Liang, Kan" <kan.liang@...ux.intel.com>,
        Chris Zankel <chris@...kel.net>, linux-xtensa@...ux-xtensa.org
Subject: Re: [PATCH v3 23/34] xtensa: mm: Add p?d_large() definitions

On Wed, Feb 27, 2019 at 9:07 AM Steven Price <steven.price@....com> wrote:
>
> walk_page_range() is going to be allowed to walk page tables other than
> those of user space. For this it needs to know when it has reached a
> 'leaf' entry in the page tables. This information is provided by the
> p?d_large() functions/macros.
>
> For xtensa, we don't support large pages, so add a stub returning 0.
>
> CC: Chris Zankel <chris@...kel.net>
> CC: Max Filippov <jcmvbkbc@...il.com>
> CC: linux-xtensa@...ux-xtensa.org
> Signed-off-by: Steven Price <steven.price@....com>
> ---
>  arch/xtensa/include/asm/pgtable.h | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Max Filippov <jcmvbkbc@...il.com>

-- 
Thanks.
-- Max