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 X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 508EDC433DF for ; Mon, 18 May 2020 09:51:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26F902070A for ; Mon, 18 May 2020 09:51:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726590AbgERJvP (ORCPT ); Mon, 18 May 2020 05:51:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726040AbgERJvP (ORCPT ); Mon, 18 May 2020 05:51:15 -0400 Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDA4AC061A0C for ; Mon, 18 May 2020 02:51:14 -0700 (PDT) Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jacQO-0006d5-NZ; Mon, 18 May 2020 11:51:08 +0200 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 03561100606; Mon, 18 May 2020 11:51:07 +0200 (CEST) From: Thomas Gleixner To: Sasha Levin , Jarkko Sakkinen Cc: linux-kernel@vger.kernel.org, bp@alien8.de, luto@kernel.org, hpa@zytor.com, dave.hansen@intel.com, tony.luck@intel.com, ak@linux.intel.com, ravi.v.shankar@intel.com, chang.seok.bae@intel.com Subject: Re: [PATCH v12 00/18] Enable FSGSBASE instructions In-Reply-To: <20200515164013.GF29995@sasha-vm> References: <20200511045311.4785-1-sashal@kernel.org> <0186c22a8a6be1516df0703c421faaa581041774.camel@linux.intel.com> <20200515164013.GF29995@sasha-vm> Date: Mon, 18 May 2020 11:51:07 +0200 Message-ID: <87o8qly3jo.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sasha Levin writes: > On Fri, May 15, 2020 at 12:24:14PM +0300, Jarkko Sakkinen wrote: >> >>Can you put me to the CC-loop for this patches. Some SGX-enabled >>frameworks such as Graphene use out-of-tree changes to achieve this. >>That's where the interest to possibly test this comes from. > > Indeed, we've seen a few hacks that basically just enable FSGSBASE: > > - https://github.com/oscarlab/graphene-sgx-driver > - https://github.com/occlum/enable_rdfsbase I'm really amazed by all these security experts enabling a full root hole. It clearly puts the SGX hypocrisy into perspective. Thanks, tglx