Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752765AbcD2UR6 (ORCPT ); Fri, 29 Apr 2016 16:17:58 -0400 Received: from mga02.intel.com ([134.134.136.20]:50958 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752379AbcD2UR5 (ORCPT ); Fri, 29 Apr 2016 16:17:57 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,553,1455004800"; d="scan'208";a="955761496" Date: Fri, 29 Apr 2016 23:17:44 +0300 From: Jarkko Sakkinen To: Pavel Machek Cc: gregkh@linuxfoundation.org, Andy Lutomirski , Borislav Petkov , Boris Ostrovsky , "open list:STAGING SUBSYSTEM" , Ingo Molnar , Kristen Carlson Accardi , "open list:DOCUMENTATION" , open list , Mathias Krause , Thomas Gleixner , Wan Zongshun Subject: Re: [PATCH 0/6] Intel Secure Guard Extensions Message-ID: <20160429201744.GD27821@intel.com> References: <1461605698-12385-1-git-send-email-jarkko.sakkinen@linux.intel.com> <20160426190009.GC8162@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160426190009.GC8162@amd> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 915 Lines: 24 On Tue, Apr 26, 2016 at 09:00:10PM +0200, Pavel Machek wrote: > On Mon 2016-04-25 20:34:07, Jarkko Sakkinen wrote: > > Intel(R) SGX is a set of CPU instructions that can be used by > > applications to set aside private regions of code and data. The code > > outside the enclave is disallowed to access the memory inside the > > enclave by the CPU access control. > > > > The firmware uses PRMRR registers to reserve an area of physical memory > > called Enclave Page Cache (EPC). There is a hardware unit in the > > processor called Memory Encryption Engine. The MEE encrypts and decrypts > > the EPC pages as they enter and leave the processor package. > > What are non-evil use cases for this? I'm not sure what you mean by non-evil. > > Pavel > > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html /Jarkko