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[2620:137:e000::1:20]) by mx.google.com with ESMTP id c37-20020a634e25000000b005340840c0c8si1601302pgb.327.2023.07.06.08.04.08; Thu, 06 Jul 2023 08:04:23 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=SJSsx9hZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233136AbjGFOYm (ORCPT + 99 others); Thu, 6 Jul 2023 10:24:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52104 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232776AbjGFOYl (ORCPT ); Thu, 6 Jul 2023 10:24:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D15431BC3; Thu, 6 Jul 2023 07:24:39 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6E2EE6198A; Thu, 6 Jul 2023 14:24:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27906C433C7; Thu, 6 Jul 2023 14:24:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1688653478; bh=O45ertu3AbL/0W9DK51Iqjup0+XJ/VyrW0PT/x/Zq0s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SJSsx9hZKApwEzVdCFFpYNQt8mmt7MVaEkwDf5QwcsihmISLxyqwlVGpKsAr2O2uA wHqxfGhSXsoEpE/dmiE/XolVvmsgBa5QIlkyf2y9FSJQF0ZleU6L2PkPSAST/cHvKw q5z5g7BeLuabIkuOKJGc+Wb9q5/BosoQrhXmGOukiRytsB1b52ZgjtohiDVAjPcwBM PH1dsFOXBdLt0OAlkoYLZhs7FdOta5Wzn40KmvsZ21p3zYFhUjJgJZKOo04JW3ydb6 jh4RkkxrzG85J9QYC4Ax/z4ruy26AMnsA0GYiE8qSXdHdZS+ukv0RKj8FTYfj6WcLl j/t11Gg1Tn/EA== Date: Thu, 6 Jul 2023 15:24:26 +0100 From: Mark Brown To: "szabolcs.nagy@arm.com" Cc: "Edgecombe, Rick P" , "Xu, Pengfei" , "tglx@linutronix.de" , "linux-arch@vger.kernel.org" , "kcc@google.com" , "Lutomirski, Andy" , "nadav.amit@gmail.com" , "david@redhat.com" , "kirill.shutemov@linux.intel.com" , "Schimpe, Christina" , "linux-doc@vger.kernel.org" , "peterz@infradead.org" , "corbet@lwn.net" , "nd@arm.com" , "linux-kernel@vger.kernel.org" , "dethoma@microsoft.com" , "jannh@google.com" , "debug@rivosinc.com" , "mike.kravetz@oracle.com" , "bp@alien8.de" , "rdunlap@infradead.org" , "linux-api@vger.kernel.org" , "john.allen@amd.com" , "jamorris@linux.microsoft.com" , "arnd@arndb.de" , "rppt@kernel.org" , "bsingharora@gmail.com" , "x86@kernel.org" , "pavel@ucw.cz" , "andrew.cooper3@citrix.com" , "oleg@redhat.com" , "keescook@chromium.org" , "gorcunov@gmail.com" , "fweimer@redhat.com" , "Yu, Yu-cheng" , "hpa@zytor.com" , "mingo@redhat.com" , "hjl.tools@gmail.com" , "linux-mm@kvack.org" , "Syromiatnikov, Eugene" , "Torvalds, Linus" , "akpm@linux-foundation.org" , "dave.hansen@linux.intel.com" , "Yang, Weijiang" , "Eranian, Stephane" Subject: Re: [PATCH v9 23/42] Documentation/x86: Add CET shadow stack description Message-ID: References: <2a30ac58-d970-45c3-87d2-55396c0a83f9@sirena.org.uk> <0a9ade13b989ea881fd43fabbe5de1d248cf4218.camel@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="woDWu/1up2+/uYLd" Content-Disposition: inline In-Reply-To: X-Cookie: Don't read everything you believe. X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --woDWu/1up2+/uYLd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jul 06, 2023 at 02:14:40PM +0100, szabolcs.nagy@arm.com wrote: > The 07/05/2023 20:29, Mark Brown wrote: > > Push and pop are one control, you get both or neither. > gcspopm is always available (esentially *ssp++, this is used > for longjmp). Ah, sorry - I misremembered there. You're right, it's only push that we have control over. --woDWu/1up2+/uYLd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmSmzpkACgkQJNaLcl1U h9DnEQf7BcnGI2A9Hm92frxRo982dBeJJWDACtl7P//CR1MjaAoA5AAveA5J4QpS ochiNCQREYpdyJ4Kw0JmnYZ/BV00ndbzr57J6jiDCauoZePl25nAdlB+8cp7954v kcm4f8q960IqMWc6grZxlLjJkWOG7Il/WXkepOvR83pgiGmsSQXJwXRWvjs6vX38 nNlmgH28DtjqVKpVZwkLtrS3qiwHqpcoYnHGs65bzxB8JB2Xn+il3m5iCI8L4rz6 vSy2uJhTjam/bz8DTGFH31BOArTTV8zgc/t31UgWWFbCGoQ4zTSeUMAGmd8AHU7Y Z4DTcFiSEdIv/AjoWv2bJntWnEN8OQ== =eJ7T -----END PGP SIGNATURE----- --woDWu/1up2+/uYLd--