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[2620:137:e000::1:9]) by mx.google.com with ESMTPS id r141si1703775wme.99.2019.02.27.10.38.40 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Feb 2019 10:38:40 -0800 (PST) Received-SPF: neutral (google.com: 2620:137:e000::1:9 is neither permitted nor denied by best guess record for domain of davem@davemloft.net) client-ip=2620:137:e000::1:9; Authentication-Results: mx.google.com; spf=neutral (google.com: 2620:137:e000::1:9 is neither permitted nor denied by best guess record for domain of davem@davemloft.net) smtp.mailfrom=davem@davemloft.net Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::bf5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 157C214010634; Wed, 27 Feb 2019 10:38:38 -0800 (PST) Date: Wed, 27 Feb 2019 10:38:37 -0800 (PST) Message-Id: <20190227.103837.668255833945043179.davem@davemloft.net> To: steven.price@arm.com Cc: linux-mm@kvack.org, luto@kernel.org, ard.biesheuvel@linaro.org, arnd@arndb.de, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, mingo@redhat.com, james.morse@arm.com, jglisse@redhat.com, peterz@infradead.org, tglx@linutronix.de, will.deacon@arm.com, x86@kernel.org, hpa@zytor.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark.Rutland@arm.com, kan.liang@linux.intel.com, sparclinux@vger.kernel.org Subject: Re: [PATCH v3 20/34] sparc: mm: Add p?d_large() definitions From: David Miller In-Reply-To: <20190227170608.27963-21-steven.price@arm.com> References: <20190227170608.27963-1-steven.price@arm.com> <20190227170608.27963-21-steven.price@arm.com> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 27 Feb 2019 10:38:38 -0800 (PST) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Steven Price Date: Wed, 27 Feb 2019 17:05:54 +0000 > 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 sparc, we don't support large pages, so add stubs returning 0. > > CC: "David S. Miller" > CC: sparclinux@vger.kernel.org > Signed-off-by: Steven Price Sparc does support large pages on 64-bit, just not at this level. It would be nice if the commit message was made more accurate. Other than that: Acked-by: David S. Miller