From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yu-cheng Yu Subject: Re: [PATCH v8 09/27] mm/mmap: Prevent Shadow Stack VMA merges Date: Wed, 14 Aug 2019 09:20:21 -0700 Message-ID: <699fe0a2c2331af0d45a3516d9422d5ed5b59a99.camel@intel.com> References: <20190813205225.12032-1-yu-cheng.yu@intel.com> <20190813205225.12032-10-yu-cheng.yu@intel.com> <5ba3d1b3-5587-e7dd-b9de-9a954172d31f@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5ba3d1b3-5587-e7dd-b9de-9a954172d31f@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Dave Hansen , 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 List-Id: linux-api@vger.kernel.org On Tue, 2019-08-13 at 15:34 -0700, Dave Hansen wrote: > On 8/13/19 1:52 PM, Yu-cheng Yu wrote: > > To prevent function call/return spills into the next shadow stack > > area, do not merge shadow stack areas. > > How does this prevent call/return spills? It does not. I will fix the description. Yu-cheng