From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AA54C04AB5 for ; Mon, 3 Jun 2019 17:40:21 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 112CE24285 for ; Mon, 3 Jun 2019 17:40:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ljwfHXBu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 112CE24285 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RHEypC/I8EH39ljlsVjpegWokBRPdAaW8/7Z09bcM2E=; b=ljwfHXBuqOO0Nv TNDCclP0FBz0NFhSAjnbW40tHSS1NOB987h9gz/jFFMdyTJHD5ITTBWviCKn/1VrE8Wx3KNOOViv/ +LFgiljXUsdAjR1k0jsLKTpVgaFuKPvdoihtrCWwFngRyRoHxRe6r9Iwu9Q/yfn4IWCsit3pBxMIz C44pa6r66cwmDH0ZaT23Lmn8DY9Z1hf9DpYzRMr9ghNnTe2Mcd44LluKIZn4uQrR3G7XLJbKSmKGf jC+aRva5+2VHuwrHW6yn4Jl+gSTa4TVX5+RXP7uzB9WeyAQ/2pGIt+YYR7ktMupFeKxFoZsyDF+ve ToesLWtqjW10IIMDyL2A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hXqwQ-0008Cx-Qf; Mon, 03 Jun 2019 17:40:14 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hXqwJ-00083v-Pz; Mon, 03 Jun 2019 17:40:08 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 81C7280D; Mon, 3 Jun 2019 10:40:07 -0700 (PDT) Received: from arrakis.emea.arm.com (arrakis.cambridge.arm.com [10.1.196.78]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6BC373F5AF; Mon, 3 Jun 2019 10:40:04 -0700 (PDT) Date: Mon, 3 Jun 2019 18:40:01 +0100 From: Catalin Marinas To: Alexandre Ghiti Subject: Re: [PATCH v4 05/14] arm64, mm: Make randomization selected by generic topdown mmap layout Message-ID: <20190603174001.GL63283@arrakis.emea.arm.com> References: <20190526134746.9315-1-alex@ghiti.fr> <20190526134746.9315-6-alex@ghiti.fr> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190526134746.9315-6-alex@ghiti.fr> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190603_104007_852754_96EB14A1 X-CRM114-Status: UNSURE ( 9.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org 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 ;). Acked-by: Catalin Marinas _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv