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From:   Max Filippov <jcmvbkbc@gmail.com>
Date:   Wed, 27 Feb 2019 09:29:45 -0800
Message-ID: <CAMo8Bf+W3o+ZfTztNyCJVs1CDshB_=3hhCne6MY6v=PD=GqLUg@mail.gmail.com>
Subject: Re: [PATCH v3 23/34] xtensa: mm: Add p?d_large() definitions
To:     Steven Price <steven.price@arm.com>
Cc:     linux-mm@kvack.org, Andy Lutomirski <luto@kernel.org>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>, Borislav Petkov <bp@alien8.de>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Ingo Molnar <mingo@redhat.com>,
        James Morse <james.morse@arm.com>,
        =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Will Deacon <will.deacon@arm.com>,
        "maintainer:X86 ARCHITECTURE..." <x86@kernel.org>,
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        linux-arm-kernel@lists.infradead.org,
        LKML <linux-kernel@vger.kernel.org>,
        Mark Rutland <Mark.Rutland@arm.com>,
        "Liang, Kan" <kan.liang@linux.intel.com>,
        Chris Zankel <chris@zankel.net>, linux-xtensa@linux-xtensa.org
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On Wed, Feb 27, 2019 at 9:07 AM Steven Price <steven.price@arm.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@zankel.net>
> CC: Max Filippov <jcmvbkbc@gmail.com>
> CC: linux-xtensa@linux-xtensa.org
> Signed-off-by: Steven Price <steven.price@arm.com>
> ---
>  arch/xtensa/include/asm/pgtable.h | 1 +
>  1 file changed, 1 insertion(+)

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

-- 
Thanks.
-- Max