From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Sakkinen Subject: Re: [PATCH v15 23/23] x86/sgx: Driver documentation Date: Tue, 6 Nov 2018 08:26:55 +0200 Message-ID: <20181106062655.GA18671@linux.intel.com> References: <20181102231320.29164-1-jarkko.sakkinen@linux.intel.com> <20181102231320.29164-24-jarkko.sakkinen@linux.intel.com> <154ded23-fd1d-f324-4e0a-9de8eddcda6d@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <154ded23-fd1d-f324-4e0a-9de8eddcda6d@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Dave Hansen Cc: x86@kernel.org, platform-driver-x86@vger.kernel.org, linux-sgx@vger.kernel.org, sean.j.christopherson@intel.com, nhorman@redhat.com, npmccallum@redhat.com, serge.ayoun@intel.com, shay.katz-zamir@intel.com, haitao.huang@intel.com, mark.shanahan@intel.com, andriy.shevchenko@linux.intel.com, Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "open list:DOCUMENTATION" , open list List-Id: platform-driver-x86.vger.kernel.org On Mon, Nov 05, 2018 at 12:27:11PM -0800, Dave Hansen wrote: > This patch set establishes an ABI. It basically sets in stone a bunch > of behaviors that the enclave, the kernel, and the out-of-enclave code > must follow. > > There are a bunch of things that the enclave can do to %rsp or %rip, for > instance, that it is capable and/or permitted to do. Just want to ask a follow-up from this so that I understand you better. Now we are talking abou ioctl API, right? I'm not exactly sure how EENTER/EEXIT/ERESUME behavior connects to that. I understand the tail of your message but this paragraph left me a bit puzzled... /Jarkko