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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 05F41ECE58E for ; Thu, 17 Oct 2019 18:12:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CA89D21835 for ; Thu, 17 Oct 2019 18:12:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437946AbfJQSME (ORCPT ); Thu, 17 Oct 2019 14:12:04 -0400 Received: from mga14.intel.com ([192.55.52.115]:10401 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2395229AbfJQSME (ORCPT ); Thu, 17 Oct 2019 14:12:04 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Oct 2019 11:12:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,308,1566889200"; d="scan'208";a="221469877" Received: from eshoguli-mobl1.ccr.corp.intel.com (HELO localhost) ([10.252.19.56]) by fmsmga004.fm.intel.com with ESMTP; 17 Oct 2019 11:12:01 -0700 Date: Thu, 17 Oct 2019 21:12:01 +0300 From: Jarkko Sakkinen To: Sean Christopherson Cc: linux-sgx@vger.kernel.org Subject: Re: [PATCH for_v23 v3 00/12] x86/sgx: Bug fixes for v23 Message-ID: <20191017181201.GI6667@linux.intel.com> References: <20191016183745.8226-1-sean.j.christopherson@intel.com> <20191017181054.GH6667@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191017181054.GH6667@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On Thu, Oct 17, 2019 at 09:10:54PM +0300, Jarkko Sakkinen wrote: > On Wed, Oct 16, 2019 at 11:37:33AM -0700, Sean Christopherson wrote: > > As requested, the merge of the EPC and EADD bug fix series. The headliners > > are two critical bug fixes for a memory leak in sgx_encl_destroy() and a > > livelock due to the EPC page free count getting corrupted. > > BTW, are you still planning to send multi-page EADD? I think it should > be done. It is obviously superior design when combined with my small > twist where mrmask is calculated inside the kernel. > > Not only does it provide multi-page EADD but you could always do one > ioctl per area. With mrmask in parameters you end up needing two if the > user space is designed in a way that measurement is not a multiple of a > page. > > If mrmask would make sense in the parameters, then a single-page EADD > would be cool but I think we want to render it out completely. My earlier comments about doing first a single page EADD were based on API where you provide mrmask. /Jarkko