From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E27125C827; Fri, 8 Aug 2025 11:48:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754653725; cv=none; b=rb2vZ8Qjl9+1/jnZNdtdPz/xxc8R5nM0ulPP6lHHfXIa5rdKJImSQAvTEmPPzEWYXcbi7XXfxmsmUJFvkiCFpA8XiDuW/ohp5PBN1ADC/RyHp0vk0HGZBOGmIladYIpl3k4vz2gVjgSPHnzBdxpuaiIM1emfVc6KkcEgz52lEYw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754653725; c=relaxed/simple; bh=FUx4gUgdyZ2ZZBXuzAMKD50bvkFnEcWtdMYMuJy1cVM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=HGwE/Z/fk7JD4UrBrzwpoch3JP8/PAbCDAJNWqm/HCmCeLY0Oos1nEKnmv69TNbH4yZVMTLWjbHRdmSea5O33HuOI4nO4xjqC992KoaNFgeaW+taVbZNcomiYrVMFTMsCsFEfdvQJx2fPAXxUt8kKE1XKBxpsHnWw0AhqS415OA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KlH2z2/S; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KlH2z2/S" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5EFFEC4CEF1; Fri, 8 Aug 2025 11:48:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754653724; bh=FUx4gUgdyZ2ZZBXuzAMKD50bvkFnEcWtdMYMuJy1cVM=; h=Date:From:To:List-Id:Cc:Subject:References:In-Reply-To:From; b=KlH2z2/SRGW4K4fN/lCfwfHAWCLsioLuNXYi0U8bGmXfTGaqjSCRwOhCs4s6TOA0J 7X5PzrzWTGmySfiKXxgGxB0TXo1/sEh2IwxOimdqCIM5itio7QuZye5qUFhTiowsro g9QGixSNwxKrLcq5ITi3jqk67TuJhrezSoeLBNFz3QMy7WAmsXR3PnPszSWAp/YNRf EpX42Uy/odYqRyAa1Gq9Pu3xMZtrRg9Wroqn8PxqGIn7GoY01TQOQU0yKZO8i1uzel dv/TdTFEOVjWt68sUn36VVGp+5yBeS/m5Bp5b7ElzfFVkSOFUCDepl9vRLQpiKGtKo ASrYLKLOSRMsg== Date: Fri, 8 Aug 2025 12:48:31 +0100 From: Mark Brown To: Deepak Gupta Cc: patchwork-bot+linux-riscv@kernel.org, linux-riscv@lists.infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, akpm@linux-foundation.org, Liam.Howlett@oracle.com, vbabka@suse.cz, lorenzo.stoakes@oracle.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, conor@kernel.org, robh@kernel.org, krzk+dt@kernel.org, arnd@arndb.de, brauner@kernel.org, peterz@infradead.org, oleg@redhat.com, ebiederm@xmission.com, kees@kernel.org, corbet@lwn.net, shuah@kernel.org, jannh@google.com, conor+dt@kernel.org, ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, lossin@kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, devicetree@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, alistair.francis@wdc.com, richard.henderson@linaro.org, jim.shu@sifive.com, andybnac@gmail.com, kito.cheng@sifive.com, charlie@rivosinc.com, atishp@rivosinc.com, evan@rivosinc.com, cleger@rivosinc.com, alexghiti@rivosinc.com, samitolvanen@google.com, rick.p.edgecombe@intel.com, rust-for-linux@vger.kernel.org, zong.li@sifive.com, david@redhat.com Subject: Re: [PATCH v19 00/27] riscv control-flow integrity for usermode Message-ID: <09081487-89ac-4f8d-b9fc-e563f09726d2@sirena.org.uk> References: <20250731-v5_user_cfi_series-v19-0-09b468d7beab@rivosinc.com> <175450053775.2863135.11568399057706626223.git-patchwork-notify@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="D45dRbRxMwDeSA/W" Content-Disposition: inline In-Reply-To: X-Cookie: What an artist dies with me! --D45dRbRxMwDeSA/W Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Aug 08, 2025 at 01:23:15AM -0700, Deepak Gupta wrote: > On Thu, Aug 07, 2025 at 01:28:36PM +0100, Mark Brown wrote: > > Do you have an update for my clone3() shadow > No I don't. > > stack series that I could roll in for when I repost that after the merge > > window, and/or instructions for how to run this stuff for RISC-V on some > > emulated platform? > I would want to write-up instructions. But I don't want you to go through > a lot of hassle of building toolchain and bunch of other stuff. > Let me see how I can make it easy for you. Will report back. Thanks. FWIW I should already be sorted for the kernel build, unless there's a super new or specialist toolchain required for this feature (I'd guess I should be fine for the shadow stacks bit?) - it's userspace and emulation for the extension I'm missing. --D45dRbRxMwDeSA/W Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmiV5A4ACgkQJNaLcl1U h9BR4gf/Yvc9us1uldFqSA9g7p+0bzU3IY/RfdDdME4qVGVWWXybW7b1P+6OdvKr lRLLeAJQkpEzhtLNeXXTVgRijmaDgccqM2d2Vkehw9qrW1+pwA56PX8PQPBtJsGL riODDRX0jZSrSVAPE/mwrQRc97vY83Tme2w2Psah2FzICcRcLdsC9vz3BIsquWgp 5LbvWFyIS7PraLBoSkO76qBYDtRwjw3LzoANXm5rYo9QKsT48UPgjfvmzxLqTSxT oDMob4PjC2+1FU6Q1yzo5CUyK+aX58BM0OGwWEq4DDOCu5kd0ltVJen8HWszpfVz YgUpgySyAiGsfZTi1JBRv158syBsdQ== =5/MC -----END PGP SIGNATURE----- --D45dRbRxMwDeSA/W--