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[213.95.11.211]) by mx.google.com with ESMTPS id c11si10213383wrx.179.2019.04.22.12.54.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 22 Apr 2019 12:54:31 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) client-ip=213.95.11.211; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de Received: by newverein.lst.de (Postfix, from userid 2407) id EDBB668B20; Mon, 22 Apr 2019 21:54:16 +0200 (CEST) Date: Mon, 22 Apr 2019 21:54:14 +0200 From: Christoph Hellwig To: Alexandre Ghiti Cc: Andrew Morton , Christoph Hellwig , Russell King , Catalin Marinas , Will Deacon , Ralf Baechle , Paul Burton , James Hogan , Palmer Dabbelt , Albert Ou , Alexander Viro , Luis Chamberlain , Kees Cook , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig Subject: Re: [PATCH v3 04/11] arm64, mm: Move generic mmap layout functions to mm Message-ID: <20190422195414.GC2224@lst.de> References: <20190417052247.17809-1-alex@ghiti.fr> <20190417052247.17809-5-alex@ghiti.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190417052247.17809-5-alex@ghiti.fr> User-Agent: Mutt/1.5.17 (2007-11-01) 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: On Wed, Apr 17, 2019 at 01:22:40AM -0400, Alexandre Ghiti wrote: > arm64 handles top-down mmap layout in a way that can be easily reused > by other architectures, so make it available in mm. > It then introduces a new config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT > that can be set by other architectures to benefit from those functions. > Note that this new config depends on MMU being enabled, if selected > without MMU support, a warning will be thrown. > > Suggested-by: Christoph Hellwig > Signed-off-by: Alexandre Ghiti Looks good, Reviewed-by: Christoph Hellwig