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[217.70.183.197]) by mx.google.com with ESMTPS id 39si6401214edr.449.2019.06.03.23.20.45 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 03 Jun 2019 23:20:45 -0700 (PDT) Received-SPF: neutral (google.com: 217.70.183.197 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) client-ip=217.70.183.197; Authentication-Results: mx.google.com; spf=neutral (google.com: 217.70.183.197 is neither permitted nor denied by best guess record for domain of alex@ghiti.fr) smtp.mailfrom=alex@ghiti.fr X-Originating-IP: 79.86.19.127 Received: from [192.168.0.12] (127.19.86.79.rev.sfr.net [79.86.19.127]) (Authenticated sender: alex@ghiti.fr) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 49FAD1C0009; Tue, 4 Jun 2019 06:20:38 +0000 (UTC) Subject: Re: [PATCH v4 05/14] arm64, mm: Make randomization selected by generic topdown mmap layout To: Catalin Marinas Cc: Albert Ou , Kees Cook , James Hogan , Palmer Dabbelt , Will Deacon , Russell King , Ralf Baechle , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Paul Burton , linux-riscv@lists.infradead.org, Alexander Viro , linux-fsdevel@vger.kernel.org, Andrew Morton , linux-mips@vger.kernel.org, Christoph Hellwig , linux-arm-kernel@lists.infradead.org, Luis Chamberlain References: <20190526134746.9315-1-alex@ghiti.fr> <20190526134746.9315-6-alex@ghiti.fr> <20190603174001.GL63283@arrakis.emea.arm.com> From: Alex Ghiti Message-ID: Date: Tue, 4 Jun 2019 02:20:38 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <20190603174001.GL63283@arrakis.emea.arm.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Content-Language: sv-FI X-Bogosity: Ham, tests=bogofilter, spamicity=0.000004, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 6/3/19 1:40 PM, Catalin Marinas wrote: > On Sun, May 26, 2019 at 09:47:37AM -0400, Alexandre Ghiti wrote: >> This commits selects ARCH_HAS_ELF_RANDOMIZE when an arch uses the generic >> topdown mmap layout functions so that this security feature is on by >> default. >> Note that this commit also removes the possibility for arm64 to have elf >> randomization and no MMU: without MMU, the security added by randomization >> is worth nothing. > Not planning on this anytime soon ;). Great :) Thanks for your time, Alex > > Acked-by: Catalin Marinas > > _______________________________________________ > linux-riscv mailing list > linux-riscv@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-riscv