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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6FE6EC54EED for ; Mon, 30 Jan 2023 18:35:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc: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=pdM6SBYOsiAUxsxGg9Vp9aF1A8I4as46WLu0JGPNzgQ=; b=DPKnEwl5jN3ge5z+qwu5SwZOV9 ONZ57EnLWhaD/9nvHq/7/gueUCFvAsjBs81UjKnEtu7eJ6tJ2b3G4dengGmq9PXZLs0bGfMsWMM/y 7M9zrCMSZcBCvE4CKnHhSmmUEVpjRW7aXUBVc6tRTjBXW2gX4l5QZdNA6uO9/wl3EP+aZGkLHSY2P bBicOqrjwR59U4tCG7MpqLUp1KedNjbWmMmmPQQxUQSIg9G6akwyJqrHkZwuklV45nd88uNVtxL1l tqoCgr0MNYvE2/TXCzDRUrIKrt+uO1vKeFzvVyE+6kIj69thm/uQp+FkPrT8RNBohAkZ4+RAY9jpc mn5DDlfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMYyg-0052Vp-HW; Mon, 30 Jan 2023 18:34:04 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMYyZ-0052Sd-GM for linux-arm-kernel@lists.infradead.org; Mon, 30 Jan 2023 18:33:56 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 24C07CE18B3; Mon, 30 Jan 2023 18:33:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3004FC433D2; Mon, 30 Jan 2023 18:33:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675103627; bh=4Xp4anI1UeqLZLYkHRlW1KBpGPVEQt5MwoiLQEfuAYw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=S2B8Qw2He/02GHbHLV+FNnqQ5PioDtpnPAYo1cFEyYTtXS1KcvULhFxCadRzlGo9x wLjEss+BSP6/00vm9GNdYYhUymnsp0cf4iKD2UUYMxSaFfp4oIJr9yO75eKlaSm1Fy yaO4HNT8czVM+pCummvOJUlSuaU6uZ+a44D9SsUu0heQ9ocEO4VbOjiWqERs0zT3/B OHyzh+hrRc8dgFrBfBIW+f1p8bOR1MOxUGWSYJkSDdk9p5JX2vuBTJjFicmYeoAP2t 1LGDcYBQbmqaogyq6OmicVtRD4qfXJmqjoX8m/xw4pzhMkhNEaG1dgB/KnQ+dlB0cs dL4wMowAxK2jg== Date: Mon, 30 Jan 2023 18:33:42 +0000 From: Mark Brown To: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, amit.kachhap@arm.com, ardb@kernel.org, catalin.marinas@arm.com, will@kernel.org Subject: Re: [PATCH 2/2] arm64: pauth: don't sign leaf functions Message-ID: References: <20230125182201.800076-1-mark.rutland@arm.com> <20230125182201.800076-3-mark.rutland@arm.com> MIME-Version: 1.0 In-Reply-To: <20230125182201.800076-3-mark.rutland@arm.com> X-Cookie: Some restrictions may apply. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230130_103355_749644_46F4681C X-CRM114-Status: GOOD ( 11.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============3165392701388295086==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============3165392701388295086== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="iATB/NJA9pUkgqDC" Content-Disposition: inline --iATB/NJA9pUkgqDC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jan 25, 2023 at 06:22:01PM +0000, Mark Rutland wrote: > Currently, when CONFIG_ARM64_PTR_AUTH_KERNEL=y (and > CONFIG_UNWIND_PATCH_PAC_INTO_SCS=n), we enable pointer authentication > for all functions, including leaf functions. This isn't necessary, and > is unfortunate for a few reasons: Reviewed-by: Mark Brown --iATB/NJA9pUkgqDC Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmPYDYYACgkQJNaLcl1U h9DHyAf/dfbZiQ+f918EzW8ZVvIWuzAkzlKk04ATGXazJOAP3CdW6eYrSX9Wfho7 XDCBYiZrcdeC+4H9ajVJpDdNFqjR6vIxStqrNdhG8lybsbJqeMdRKgd3LRKvcJGc jLm3C4UxXXx8HVDAOKfVibftTu0YElJVi7jpAcTFl95gthon//5nPllJtEp/QzzE Ik/pszq2EbhxCRtrx1XP28lFC06r3b/Dnol4+t/1nSaOXQNXB8AhgYdswvHRoz0e qSHKO/nY6wdI13egkiUS36lvGwdRpQRtTq9ijZ9afEMKfnaM5qV+ZZKqZa8JvZVv DCio0M6jUTTVIkRKy6R7btlrCTvhyQ== =EvTl -----END PGP SIGNATURE----- --iATB/NJA9pUkgqDC-- --===============3165392701388295086== 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 --===============3165392701388295086==--