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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 81E62C433DF for ; Thu, 28 May 2020 19:19:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E648207BC for ; Thu, 28 May 2020 19:19:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406263AbgE1TTW (ORCPT ); Thu, 28 May 2020 15:19:22 -0400 Received: from mga17.intel.com ([192.55.52.151]:42100 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405596AbgE1TTT (ORCPT ); Thu, 28 May 2020 15:19:19 -0400 IronPort-SDR: 9beMskLDrBnv9zTRO0fyo5YNu+oh5B+fVcaIOwX7TpKHSOU6RoZbWmKZHkmpd8OzzjIml8psUr mRIZLj23nRBw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2020 12:19:18 -0700 IronPort-SDR: rYxDEesOM5+HpYuOiYxDoBMxJa241T34T363LDDQv41MwgTvB1xQcu+kixQR7ANse9fBmli7tS QoMPJO31GvrQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,445,1583222400"; d="scan'208";a="292105760" Received: from jtitox-mobl.ger.corp.intel.com (HELO localhost) ([10.252.56.171]) by fmsmga004.fm.intel.com with ESMTP; 28 May 2020 12:19:12 -0700 Date: Thu, 28 May 2020 22:19:10 +0300 From: Jarkko Sakkinen To: Don Porter Cc: Thomas Gleixner , Andi Kleen , Sasha Levin , linux-kernel@vger.kernel.org, bp@alien8.de, luto@kernel.org, hpa@zytor.com, dave.hansen@intel.com, tony.luck@intel.com, ravi.v.shankar@intel.com, chang.seok.bae@intel.com Subject: Re: [PATCH v12 00/18] Enable FSGSBASE instructions Message-ID: <20200528191910.GC2147934@linux.intel.com> References: <20200518153407.GA499505@tassilo.jf.intel.com> <371e6a92cad25cbe7a8489785efa7d3457ecef3b.camel@linux.intel.com> <87v9ksvoaq.fsf@nanos.tec.linutronix.de> <20200519164853.GA19706@linux.intel.com> <7eb45e02-03bf-0af0-c915-794bf49d66d7@cs.unc.edu> <87h7w7qy18.fsf@nanos.tec.linutronix.de> <87d06opd3a.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 28, 2020 at 01:40:16PM -0400, Don Porter wrote: > Hi Thomas, > > On 5/28/20 6:29 AM, Thomas Gleixner wrote: > > > Until recently, we were doing proof-of-concept research, not product > > > development, and there are limited hours in the day. I also hasten to > > > say that the product of research is an article, the software artifact > > > serves as documentation of the experiment. In contrast, the product of > > > software development is software. It takes significant time and effort > > > to convert one to the other. Upstreaming code is of little scientific > > > interest. But things have changed for our project; we had no users in > > > 2015 and we are now un-cutting corners that are appropriate for research > > > but inappropriate for production. For a research artifact with an > > > audience that knew the risks, we shipped a module because it was easier > > > to maintain and install than a kernel patch. > > > > I understand that and with a big fat warning and documentation from > > start I wouldn't have complained so vehemently. > > This is a fair point. We will fix this ASAP, and I will be more careful > about this going forward. Are you going to experiment with this patch set and Graphene? Just sanity checking so that I don't unnecessarily do duplicate work. I ignored most of the discussion since I came here only with the motivation of testing Graphene together with this patch set. I'm assuming that motivation is always good no matter which angle you come from. Thus, I might have missed the part I'm asking. /Jarkko