[{"id":1767426,"web_url":"http://patchwork.ozlabs.org/comment/1767426/","msgid":"<20170912231345.GF10675@arm.com>","list_archive_url":null,"date":"2017-09-12T23:13:46","subject":"Re: [PATCH 0/2] arm64: Cleanups if modules are disabled","submitter":{"id":7916,"url":"http://patchwork.ozlabs.org/api/people/7916/","name":"Will Deacon","email":"will.deacon@arm.com"},"content":"On Tue, Sep 05, 2017 at 08:06:51PM +0200, Geert Uytterhoeven wrote:\n> \tHi Catalin, Will,\n> \n> This patch series disables printing and reservation of virtual memory for\n> modules if module support is disabled.\n\nIf we're going to do this, then we should probably also update the pt\ndumping code (mm/dump.c) to avoid dumping the modules area too.\n\nThere are also some weird consequences of defining MODULES_VSIZE to be 0,\nsince we'll end up registering a zero-length region with KASAN and\ncalculating a bogus module_alloc_base in the kaslr code. This might all be\nharmless, but it feels like we're laying down some tripwires for ourselves\nthat I'd rather avoid doing.\n\nWill","headers":{"Return-Path":"","X-Original-To":"incoming-imx@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming-imx@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; helo=bombadil.infradead.org;\n\tenvelope-from=linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org;\n\treceiver=)","ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=lists.infradead.org\n\theader.i=@lists.infradead.org\n\theader.b=\"uMeEI+Jw\"; dkim-atps=neutral"],"Received":["from bombadil.infradead.org (bombadil.infradead.org\n\t[65.50.211.133])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xsLGC0bKMz9s9Y\n\tfor ;\n\tWed, 13 Sep 2017 09:14:10 +1000 (AEST)","from localhost ([127.0.0.1] helo=bombadil.infradead.org)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1druNY-0001uq-G7; Tue, 12 Sep 2017 23:14:04 +0000","from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]\n\thelo=foss.arm.com)\n\tby bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux))\n\tid 1druNV-0001rN-2K for linux-arm-kernel@lists.infradead.org;\n\tTue, 12 Sep 2017 23:14:02 +0000","from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249])\n\tby usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D364D1529;\n\tTue, 12 Sep 2017 16:13:36 -0700 (PDT)","from edgewater-inn.cambridge.arm.com\n\t(usa-sjc-imap-foss1.foss.arm.com [10.72.51.249])\n\tby usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id\n\tA29B73F58C; Tue, 12 Sep 2017 16:13:36 -0700 (PDT)","by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000)\n\tid 12D7C1AE37A8; Wed, 13 Sep 2017 00:13:46 +0100 (BST)"],"DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20170209; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:\n\tMessage-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=YvrAXn4vLAEPArl35HCMk+eqjWw/lh0wyDYByq2SrL4=;\n\tb=uMeEI+JwO8O+In\n\tPWuxH5GhF3UU+9Y6VwQ7LXHHcS92TlmUISiWyv+Uo5rnkkbkH7u5bPfPHE09QiS+qVYHDqAu5vxaa\n\t3W0NdRmy+YrygKcILTnyt9ixfeTQVVwtvi+8in6491Qyf1vQTFOO8YfrV+U6Fsp9cV7KGY9l9Xr4z\n\teopFTmJhr7eC/KS+7m+rtjk7cy8Jm/Jj0D/IwSl3OL+SIqshvRjN+SOEHud2JfIY8qrohIvTlb0G8\n\tD4if9ERk2BHJ/NBucXDvRMqsC5PDfz46sa4kvgn6ROs8BjpQR7d6iikzN0SsNQpPcrLuWCBBbqE1V\n\t9DvGcpbcOz7zgVw9NbeA==;","Date":"Wed, 13 Sep 2017 00:13:46 +0100","From":"Will Deacon ","To":"Geert Uytterhoeven ","Subject":"Re: [PATCH 0/2] arm64: Cleanups if modules are disabled","Message-ID":"<20170912231345.GF10675@arm.com>","References":"<1504634813-29554-1-git-send-email-geert+renesas@glider.be>","MIME-Version":"1.0","Content-Disposition":"inline","In-Reply-To":"<1504634813-29554-1-git-send-email-geert+renesas@glider.be>","User-Agent":"Mutt/1.5.23 (2014-03-12)","X-CRM114-Version":"20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ","X-CRM114-CacheID":"sfid-20170912_161401_130624_E0DEDAA6 ","X-CRM114-Status":"GOOD ( 10.70 )","X-Spam-Score":"-6.9 (------)","X-Spam-Report":"SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-6.9 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/,\n\thigh trust [217.140.101.70 listed in list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]","X-BeenThere":"linux-arm-kernel@lists.infradead.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Catalin Marinas ,\n\tlinux-arm-kernel@lists.infradead.org","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"linux-arm-kernel\" ","Errors-To":"linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org","List-Id":"linux-imx-kernel.lists.patchwork.ozlabs.org"}}]