linux-kernel - Re: [PATCH v8 02/20] arm64: mm: Add p?d

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Message-ID: <20190611153650.GB4324@fuggles.cambridge.arm.com>
Date:   Tue, 11 Jun 2019 16:36:50 +0100
From:   Will Deacon <will.deacon@....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>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark Rutland <Mark.Rutland@....com>,
        "Liang, Kan" <kan.liang@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v8 02/20] arm64: mm: Add p?d_large() definitions

On Wed, Apr 03, 2019 at 03:16:09PM +0100, Steven Price 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 will be provided by the
> p?d_large() functions/macros.

I've have thought p?d_leaf() might match better with your description above,
but I'm not going to quibble on naming.

For this patch:

Acked-by: Will Deacon <will.deacon@....com>

Will