linux-kernel - Re: [PATCH v13 09/22] sparc: mm: Add p?d

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Message-Id: <20191024.094623.2182520936177775102.davem@davemloft.net>
Date:   Thu, 24 Oct 2019 09:46:23 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     steven.price@....com
Cc:     linux-mm@...ck.org, luto@...nel.org, ard.biesheuvel@...aro.org,
        arnd@...db.de, bp@...en8.de, catalin.marinas@....com,
        dave.hansen@...ux.intel.com, mingo@...hat.com, james.morse@....com,
        jglisse@...hat.com, peterz@...radead.org, tglx@...utronix.de,
        will@...nel.org, x86@...nel.org, hpa@...or.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark.Rutland@....com, kan.liang@...ux.intel.com,
        akpm@...ux-foundation.org, sparclinux@...r.kernel.org
Subject: Re: [PATCH v13 09/22] sparc: mm: Add p?d_leaf() definitions

From: Steven Price <steven.price@....com>
Date: Thu, 24 Oct 2019 10:37:03 +0100

> 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_leaf() functions/macros.
> 
> For sparc 64 bit, pmd_large() and pud_large() are already provided, so
> add macros to provide the p?d_leaf names required by the generic code.
> 
> CC: "David S. Miller" <davem@...emloft.net>
> CC: sparclinux@...r.kernel.org
> Signed-off-by: Steven Price <steven.price@....com>

Acked-by: David S. Miller <davem@...emloft.net>