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 997B4C10DCE for ; Wed, 18 Mar 2020 19:41:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7943520752 for ; Wed, 18 Mar 2020 19:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726631AbgCRTlg (ORCPT ); Wed, 18 Mar 2020 15:41:36 -0400 Received: from mga07.intel.com ([134.134.136.100]:9918 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726619AbgCRTlg (ORCPT ); Wed, 18 Mar 2020 15:41:36 -0400 IronPort-SDR: h3SFj6OincUZ7PLZdQq8YDNMZ/L7XYHKZUA7OHJ/vsartUe0iLrJ96XuBa8LXpThM1v973B41o 2sEVO+0CzABw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2020 12:41:35 -0700 IronPort-SDR: 9vEuIIS50uqdaDlM78on65EWp6SrQdZHPd0ee11QSZ6aXJGXdCquIRgOG+TN+PLcT1SAaethQi VbRP9mUkXMmQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,568,1574150400"; d="scan'208";a="418064190" Received: from mbeldzik-mobl.ger.corp.intel.com (HELO localhost) ([10.252.55.127]) by orsmga005.jf.intel.com with ESMTP; 18 Mar 2020 12:41:33 -0700 Date: Wed, 18 Mar 2020 21:41:32 +0200 From: Jarkko Sakkinen To: Sean Christopherson Cc: linux-sgx@vger.kernel.org Subject: Re: [PATCH] x86/sgx: Fix deadlock and race conditions between fork() and EPC reclaim Message-ID: <20200318194132.GB48177@linux.intel.com> References: <20200317051539.10447-1-sean.j.christopherson@intel.com> <20200318153903.GA37333@linux.intel.com> <20200318155043.GA37726@linux.intel.com> <20200318160316.GE24357@linux.intel.com> <20200318194002.GA48177@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200318194002.GA48177@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On Wed, Mar 18, 2020 at 09:40:06PM +0200, Jarkko Sakkinen wrote: > On Wed, Mar 18, 2020 at 09:03:16AM -0700, Sean Christopherson wrote: > > How on earth is someone doing to dredge up the above information without a > > comment? Anyone looking at this code without a priori knowledge of the > > development history will assume the missing synchronize_srcu() is a bug. > > By reading the source code of the driver obviously. Secondly, there is no development history. It is in epoch state. /Jarkko