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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9242EB64D8 for ; Wed, 14 Jun 2023 23:32:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236302AbjFNXcM (ORCPT ); Wed, 14 Jun 2023 19:32:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32874 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229516AbjFNXcJ (ORCPT ); Wed, 14 Jun 2023 19:32:09 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2992A6; Wed, 14 Jun 2023 16:32:08 -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 3C442615A3; Wed, 14 Jun 2023 23:32:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EAE05C433C8; Wed, 14 Jun 2023 23:31:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686785527; bh=l5wAvCitc5+XKYN4a/EDPNr+xHHIzMGnu3Cj5Q32aYc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eX+05HaNgBK708k/aFiwmh8c+LYFM85sZ25U2E+kSSlULE9dba/ZjTIYcGxeIHL+A VBJSPVq71d6msFBOKgNxuOV6HWtNNM7laV2UF+bIeoMVWDEB3qOwd6ntu0/32StiYF Lt5GEVVehA0f1XlnZ0dIutG0kETw5Crnx+wflBeHQgN6GVio3SmfAQyI9mG1CZ0sAv blDsLxnwB41locARynWgOwCMGEDRgBiY8pBEwt0uZ/d4SJYp5/Z+jI7+Ql0DnmZ7U9 YL13BOC0mjccfgsJkhTCxBQ73amqKKQiBT9H7SmI2/x0QkjxpIk20uiQcgHdL55shU i8HM0piQnUYtw== Date: Thu, 15 Jun 2023 00:31:55 +0100 From: Mark Brown To: Rick Edgecombe Cc: x86@kernel.org, "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , Weijiang Yang , "Kirill A . Shutemov" , John Allen , kcc@google.com, eranian@google.com, rppt@kernel.org, jamorris@linux.microsoft.com, dethoma@microsoft.com, akpm@linux-foundation.org, Andrew.Cooper3@citrix.com, christina.schimpe@intel.com, david@redhat.com, debug@rivosinc.com, szabolcs.nagy@arm.com, torvalds@linux-foundation.org, Yu-cheng Yu , Pengfei Xu Subject: Re: [PATCH v9 14/42] mm: Introduce VM_SHADOW_STACK for shadow stack memory Message-ID: References: <20230613001108.3040476-1-rick.p.edgecombe@intel.com> <20230613001108.3040476-15-rick.p.edgecombe@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="KwuAiGV8shjV9U/y" Content-Disposition: inline In-Reply-To: <20230613001108.3040476-15-rick.p.edgecombe@intel.com> X-Cookie: You are false data. Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --KwuAiGV8shjV9U/y Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jun 12, 2023 at 05:10:40PM -0700, Rick Edgecombe wrote: > From: Yu-cheng Yu >=20 > New hardware extensions implement support for shadow stack memory, such > as x86 Control-flow Enforcement Technology (CET). Add a new VM flag to > identify these areas, for example, to be used to properly indicate shadow > stack PTEs to the hardware. Reviewed-by: Mark Brown Tested-by: Mark Brown --KwuAiGV8shjV9U/y Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmSKTeoACgkQJNaLcl1U h9DbBAf/dklSBcWFUf8rLQLLjmWtQFSN5/oHbHRtuYaWxh4ca4gZrDA4wxc8+bHc sheZePItfvKV5Ps+A/7PsQgLFiu8gv5QYrRO579LsqK3q1Omq2TRxw1dgoC89wYd 92eDscUDZwbhDg6tf/4BkTKbhkhrsVKfPYNvACjfxZ4Wn5Qj6RsQ7V+eyEqm1gyq E3RQmvinPuzLAwZwxYHCRML2ClfdJtAW+KlZTnhI6EFJ5PHHQ0HWUbddZOarjBGl ALevoPpwE8doIxGr5WYG7qQmlpY0BpAD9NSniZ6i7cT1/zp0zMht86N/cmfjEy8I TPrS9cFs9I4OoDDbyA7Dv+M33R72Gw== =2riz -----END PGP SIGNATURE----- --KwuAiGV8shjV9U/y--