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=-4.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,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 9968AC43387 for ; Thu, 3 Jan 2019 20:29:16 +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 64CE821479 for ; Thu, 3 Jan 2019 20:29:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="JMS661jS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 64CE821479 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=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-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-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=upB/l9kLt7+fcjlFp/37RlotP40BhOeKs+1KE3Vyr+8=; b=JMS661jSQgFbMTQ2OCp9bGHEh wg0BrGHPnS2L1SNBWIz6kXCikIi4hjIiiv4ysGGDtfhH4B1RIMvoLu5nCvJoGA04Nm9AL0DBThQFP VOmrYFgwTrLMdl0tURrn+dYFoyVEhKz7NNsMezTkYgRCQn9ULPrDK+og/rVRJOZEyoof7aBAB8yyQ Viy0d1ngD5LRDbjxZi/jNpgXVN0I8tHHJL6uts+s0Y6k4+eaQX8xWLb41u1z4d+9nbJDr+CQWdpJU 0TL+K8ZOWTdPZVEwfMjhasAgPNrefZLVU71IfdVNSqIpUIKArQgKzONtmgZZSKU1bRIcztQtbncbc d9sOPBeeg==; 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 1gf9c9-0006Zw-78; Thu, 03 Jan 2019 20:29:13 +0000 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gf9c4-0006Z2-N9 for linux-arm-kernel@lists.infradead.org; Thu, 03 Jan 2019 20:29:10 +0000 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 3586780806; Thu, 3 Jan 2019 21:28:57 +0100 (CET) Date: Thu, 3 Jan 2019 21:29:01 +0100 From: Pavel Machek To: Kristina Martsenko Subject: Re: [PATCH v6 07/13] arm64: add basic pointer authentication support Message-ID: <20190103202901.GA21564@amd> References: <20181207183931.4285-1-kristina.martsenko@arm.com> <20181207183931.4285-8-kristina.martsenko@arm.com> MIME-Version: 1.0 In-Reply-To: <20181207183931.4285-8-kristina.martsenko@arm.com> 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-20190103_122908_905717_D69B3B35 X-CRM114-Status: GOOD ( 12.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Andrew Jones , linux-kernel@vger.kernel.org, Jacob Bramley , Ard Biesheuvel , Marc Zyngier , Catalin Marinas , Adam Wallis , Suzuki K Poulose , Richard Henderson , Christoffer Dall , Will Deacon , kvmarm@lists.cs.columbia.edu, Cyrill Gorcunov , Ramana Radhakrishnan , Amit Kachhap , Dave P Martin , linux-arm-kernel@lists.infradead.org, Kees Cook Content-Type: multipart/mixed; boundary="===============1035632320244268222==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============1035632320244268222== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gKMricLos+KVdGMg" Content-Disposition: inline --gKMricLos+KVdGMg Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri 2018-12-07 18:39:25, Kristina Martsenko wrote: > From: Mark Rutland >=20 > This patch adds basic support for pointer authentication, allowing > userspace to make use of APIAKey, APIBKey, APDAKey, APDBKey, and > APGAKey. The kernel maintains key values for each process (shared by all > threads within), which are initialised to random values at exec() time. =2E.. > +/* > + * We give each process its own keys, which are shared by all threads. T= he keys > + * are inherited upon fork(), and reinitialised upon exec*(). > + */ > +struct ptrauth_keys { > + struct ptrauth_key apia; > + struct ptrauth_key apib; > + struct ptrauth_key apda; > + struct ptrauth_key apdb; > + struct ptrauth_key apga; > +}; intstruction_a, data_a, generic_a? Should be easier to understand than "apdb" ... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --gKMricLos+KVdGMg Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlwucI0ACgkQMOfwapXb+vKOAwCgkLvdESb50TdMC9uVVTRAt2oy JY0An30sVTzX4gQ5fTxKf5nu3+EScPPb =MRNf -----END PGP SIGNATURE----- --gKMricLos+KVdGMg-- --===============1035632320244268222== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============1035632320244268222==--