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=-1.0 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 03FD2C5ACAE for ; Wed, 11 Sep 2019 19:08:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DAA832075C for ; Wed, 11 Sep 2019 19:08:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730252AbfIKTIa (ORCPT ); Wed, 11 Sep 2019 15:08:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51706 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728521AbfIKTI3 (ORCPT ); Wed, 11 Sep 2019 15:08:29 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9485E3084037; Wed, 11 Sep 2019 19:08:29 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-117-150.ams2.redhat.com [10.36.117.150]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 941E05D9E2; Wed, 11 Sep 2019 19:08:22 +0000 (UTC) From: Florian Weimer To: Carlos O'Donell Cc: Mathieu Desnoyers , Joseph Myers , Szabolcs Nagy , libc-alpha@sourceware.org, Thomas Gleixner , Ben Maurer , Peter Zijlstra , "Paul E. McKenney" , Boqun Feng , Will Deacon , Dave Watson , Paul Turner , Rich Felker , linux-kernel@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH glibc 2.31 1/5] glibc: Perform rseq(2) registration at C startup and thread creation (v12) References: <20190807142726.2579-1-mathieu.desnoyers@efficios.com> <20190807142726.2579-2-mathieu.desnoyers@efficios.com> <8736h2sn8y.fsf@oldenburg2.str.redhat.com> <7db64714-3dc5-b322-1edc-736b08ee7d63@redhat.com> Date: Wed, 11 Sep 2019 21:08:20 +0200 In-Reply-To: <7db64714-3dc5-b322-1edc-736b08ee7d63@redhat.com> (Carlos O'Donell's message of "Wed, 11 Sep 2019 15:00:43 -0400") Message-ID: <87ef0mr6qj.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Wed, 11 Sep 2019 19:08:29 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Carlos O'Donell: > It would be easier to merge the patch set if it were just an unconditional > registration like we do for set_robust_list(). Note that this depends on the in-tree system call numbers list, which I still need to finish according to Joseph's specifications. (We have something that should work for us as long as we can get large machines from the lab, but I agree that it's not very useful if glibc bot-cycle time is roughly one business day.) Thanks, Florian