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,URIBL_BLOCKED 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 C6405C433E1 for ; Sat, 16 May 2020 09:58:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1032206D4 for ; Sat, 16 May 2020 09:58:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726234AbgEPJ6b (ORCPT ); Sat, 16 May 2020 05:58:31 -0400 Received: from mga11.intel.com ([192.55.52.93]:36071 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725917AbgEPJ6b (ORCPT ); Sat, 16 May 2020 05:58:31 -0400 IronPort-SDR: iPXEH6ZLRvylIXBDZmOSXGvBzqXr5tEpB1cXlrdVakCQjgrFgxNE1yhDSBQY4+6p8lpjkry9cg Ow4ZDyePfzxw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2020 02:58:31 -0700 IronPort-SDR: 6jHPUG3ThIOMSn2cKDvFGp+3eTCtSgVNNl6Od8zlni+TI6/ZAjaV2ZEbEAoj0UnG+736LLpoRN M7Y4cR8y+t+A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,398,1583222400"; d="scan'208";a="281482113" Received: from dbobocel-mobl1.ger.corp.intel.com ([10.252.55.115]) by orsmga002.jf.intel.com with ESMTP; 16 May 2020 02:58:21 -0700 Message-ID: <315b5759b04e900a24ed1ec3d51439c49f312c06.camel@linux.intel.com> Subject: Re: [PATCH v29 00/20] Intel SGX foundations From: Jarkko Sakkinen To: Nathaniel McCallum , "Dr. Greg" Cc: Sean Christopherson , Thomas Gleixner , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-sgx@vger.kernel.org, akpm@linux-foundation.org, dave.hansen@intel.com, Neil Horman , "Huang, Haitao" , andriy.shevchenko@linux.intel.com, "Svahn, Kai" , bp@alien8.de, Josh Triplett , luto@kernel.org, kai.huang@intel.com, David Rientjes , "Xing, Cedric" , Patrick Uiterwijk Date: Sat, 16 May 2020 12:58:20 +0300 In-Reply-To: References: <20200421215316.56503-1-jarkko.sakkinen@linux.intel.com> <20200426165753.GA11046@wind.enjellic.com> <87d07gk24l.fsf@nanos.tec.linutronix.de> <20200508190226.GA31465@wind.enjellic.com> <20200508195635.GR27052@linux.intel.com> <20200514091637.GA25156@wind.enjellic.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.1-2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2020-05-15 at 15:54 -0400, Nathaniel McCallum wrote: > The (Red Hat sponsored) Enarx project will continue building an > unofficial, unsupported version of the Fedora kernel with the SGX > patches[0] until such time as the patches are upstream. Once upstream, > I intend to propose that the feature be enabled in the stock Fedora > kernel. > > Enarx requires EDMM support as a prerequisite to being production > ready. Therefore, we are likely to continue building this custom > Fedora kernel with the latest patches until such point as EDMM support > lands upstream. This also implies that I have no current plan to > request an SGX backport to a RHEL kernel until such time as it > supports our full needs. > > Disclaimer: I do not control RHEL or Fedora kernel features. None of > the above constitutes a commitment to deliver anything. > > [0]: https://copr.fedorainfracloud.org/coprs/npmccallum/enarx/package/kernel/ SGX is somewhat self-contained feature, i.e. should be easy to backport for any recent kernel. Only the vDSO is outside of arch/x86/kernel/cpu/sgx. /Jarkko