From mboxrd@z Thu Jan 1 00:00:00 1970 From: Randy Dunlap Subject: Re: [RFC PATCH v3 05/24] Documentation/x86: Add CET description Date: Sun, 2 Sep 2018 19:56:55 -0700 Message-ID: <709e5e6c-dab1-7a20-9641-b36a0867c006@infradead.org> References: <20180830143904.3168-1-yu-cheng.yu@intel.com> <20180830143904.3168-6-yu-cheng.yu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180830143904.3168-6-yu-cheng.yu@intel.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Yu-cheng Yu , 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 , Cyrill Gorcunov , Dave Hansen , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel List-Id: linux-arch.vger.kernel.org Hi, One spello: On 08/30/2018 07:38 AM, Yu-cheng Yu wrote: > diff --git a/Documentation/x86/intel_cet.rst b/Documentation/x86/intel_cet.rst > new file mode 100644 > index 000000000000..337baa1f6980 > --- /dev/null > +++ b/Documentation/x86/intel_cet.rst > @@ -0,0 +1,252 @@ > +========================================= > +Control Flow Enforcement Technology (CET) > +========================================= > + > +[1] Overview > +============ > + > +Control Flow Enforcement Technology (CET) provides protection against > +return/jump-oriented programing (ROP) attacks. It can be implemented programming > +to protect both the kernel and applications. In the first phase, > +only the user-mode protection is implemented for the 64-bit kernel. > +Thirty-two bit applications are supported under the compatibility > +mode. -- ~Randy From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from merlin.infradead.org ([205.233.59.134]:33328 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725903AbeICHPY (ORCPT ); Mon, 3 Sep 2018 03:15:24 -0400 Subject: Re: [RFC PATCH v3 05/24] Documentation/x86: Add CET description References: <20180830143904.3168-1-yu-cheng.yu@intel.com> <20180830143904.3168-6-yu-cheng.yu@intel.com> From: Randy Dunlap Message-ID: <709e5e6c-dab1-7a20-9641-b36a0867c006@infradead.org> Date: Sun, 2 Sep 2018 19:56:55 -0700 MIME-Version: 1.0 In-Reply-To: <20180830143904.3168-6-yu-cheng.yu@intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: Yu-cheng Yu , 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 , Cyrill Gorcunov , Dave Hansen , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , "Ravi V. Shankar" , Vedvyas Shanbhogue Message-ID: <20180903025655.qvWrZ31CuLU6zcwn8TzSKJanToGOADWjJCs3nHCxPLM@z> Hi, One spello: On 08/30/2018 07:38 AM, Yu-cheng Yu wrote: > diff --git a/Documentation/x86/intel_cet.rst b/Documentation/x86/intel_cet.rst > new file mode 100644 > index 000000000000..337baa1f6980 > --- /dev/null > +++ b/Documentation/x86/intel_cet.rst > @@ -0,0 +1,252 @@ > +========================================= > +Control Flow Enforcement Technology (CET) > +========================================= > + > +[1] Overview > +============ > + > +Control Flow Enforcement Technology (CET) provides protection against > +return/jump-oriented programing (ROP) attacks. It can be implemented programming > +to protect both the kernel and applications. In the first phase, > +only the user-mode protection is implemented for the 64-bit kernel. > +Thirty-two bit applications are supported under the compatibility > +mode. -- ~Randy