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[2620:137:e000::3:2]) by mx.google.com with ESMTPS id c20-20020a63d514000000b005b9053cf6f2si8492621pgg.163.2023.11.20.08.11.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Nov 2023 08:11:33 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) client-ip=2620:137:e000::3:2; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=aVeHwi+2; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:2 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id B14F18040180; Mon, 20 Nov 2023 08:11:24 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231486AbjKTQLT (ORCPT + 99 others); Mon, 20 Nov 2023 11:11:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229696AbjKTQLS (ORCPT ); Mon, 20 Nov 2023 11:11:18 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE93DF4 for ; Mon, 20 Nov 2023 08:11:15 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29C76C433C8; Mon, 20 Nov 2023 16:11:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700496675; bh=l4r0Zimkl2LX+9IdnFYB72JaaxPTIHzvY5B+YteFh1o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aVeHwi+2Hgj/MxBohgdl7uWfeCXEx0zHDkNp3GoXfAlPyCNdXjhISc08To2mAWpsg Ka9agmJfeGTq2PwGP7qlDGL2YLoNjtaLlnd2RdQFk74FLmg3ZXJw8OYrOFjOCYjVDK jbbYKoWmyAwlnJ8SS28QkFVQZQu0D4d1lJTGkwE/CcJfi/xh9choFN3jLPEeJkjln+ a8d5Q5l2VC6gcFdSM1pZijn63wQgEPhxjx2bpDgcdb9YbWkH4365hcYI5QfOxgcuRs baqdvbxxy2MiR/8bVvBENWqGlzB0zRWDLaLwc1eAK6LbUaC2QOh7tGPbYAcZ3zxuu5 AZLFtTkfi6SiA== Date: Mon, 20 Nov 2023 16:11:05 +0000 From: Mark Brown To: "Edgecombe, Rick P" Cc: "dietmar.eggemann@arm.com" , "keescook@chromium.org" , "shuah@kernel.org" , "Szabolcs.Nagy@arm.com" , "linux-api@vger.kernel.org" , "debug@rivosinc.com" , "mgorman@suse.de" , "dave.hansen@linux.intel.com" , "fweimer@redhat.com" , "linux-kernel@vger.kernel.org" , "mingo@redhat.com" , "hjl.tools@gmail.com" , "rostedt@goodmis.org" , "tglx@linutronix.de" , "vschneid@redhat.com" , "brauner@kernel.org" , "vincent.guittot@linaro.org" , "bristot@redhat.com" , "will@kernel.org" , "catalin.marinas@arm.com" , "peterz@infradead.org" , "hpa@zytor.com" , "jannh@google.com" , "bp@alien8.de" , "bsegall@google.com" , "linux-kselftest@vger.kernel.org" , "Pandey, Sunil K" , "x86@kernel.org" , "juri.lelli@redhat.com" Subject: Re: [PATCH RFC RFT v2 2/5] fork: Add shadow stack support to clone3() Message-ID: <0f7747d2-f2ee-4e3e-be70-231673365339@sirena.org.uk> References: <1bd189e0-a7dd-422c-9766-ef1c9b0d3df8@sirena.org.uk> <54d3bc9c-9890-49f0-9e9d-78ea4d0d7199@sirena.org.uk> <9ce63f824b768f9635e55150815ee614fdee1d73.camel@intel.com> <2f92f798a1807679d193fa19b217486f57398163.camel@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="oHaoulzZJbn3kFex" Content-Disposition: inline In-Reply-To: <2f92f798a1807679d193fa19b217486f57398163.camel@intel.com> X-Cookie: I *like* the chicken X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Mon, 20 Nov 2023 08:11:24 -0800 (PST) --oHaoulzZJbn3kFex Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Nov 17, 2023 at 05:43:26PM +0000, Edgecombe, Rick P wrote: > Either of those seem fine to me, but it would be nice to get it vetted > by the libc folks before committing. I'd maybe lean towards the one you > suggested without the new flag. I'll go with just taking the stack size as a parameter then, less validation, hopefully the userspace people will be OK with that - I agree it'd be best to get their buy in. --oHaoulzZJbn3kFex Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmVbhRkACgkQJNaLcl1U h9Cdrwf+PmZcxRd9PuAOMhD/6WyXjzTrfyyd7VVQcWto1Pi1mU7ex1a6Z6PPdldx ICSc5ltzExGle1le1oPaux2tfECZmEUwesny78lyH61HNVLzpbnIwYgxf5gqug9l /vSYnX2H2VhdXPnpkBoDWi6u0efw2aBYZiKvFCtTh+KOTOYCAsgGGevgtX0f2yKv qn9eYcl8tN9LAwSLf9wzCs3hLPo1AS4RcxZwfsUaqEonFBtdHPx5jAFqXKkF7lc0 uU3bhzZF5mtnggRUWxTeQ9vzAPe57SywrWklzQNVj1OgRR/vthYZagsDCoLr/MjS yCc4JkHAq5fDXpziU7O62hNi5nofMg== =V1wv -----END PGP SIGNATURE----- --oHaoulzZJbn3kFex--