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 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 370CBC433EF for ; Fri, 15 Jun 2018 05:10:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E8E55208B5 for ; Fri, 15 Jun 2018 05:10:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E8E55208B5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755901AbeFOFKt (ORCPT ); Fri, 15 Jun 2018 01:10:49 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:55500 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755639AbeFOFKs (ORCPT ); Fri, 15 Jun 2018 01:10:48 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 75B1C4075852; Fri, 15 Jun 2018 05:10:47 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-116-61.ams2.redhat.com [10.36.116.61]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 157572144B26; Fri, 15 Jun 2018 05:10:45 +0000 (UTC) Subject: Re: Restartable Sequences system call merged into Linux To: Mathieu Desnoyers Cc: Pavel Machek , carlos , Peter Zijlstra , "Paul E. McKenney" , Boqun Feng , Thomas Gleixner , linux-kernel , libc-alpha References: <1084280721.10859.1528746558696.JavaMail.zimbra@efficios.com> <305409897.10888.1528747473727.JavaMail.zimbra@efficios.com> <091061df-3482-8762-30e4-feaf3417be11@redhat.com> <417742741.11550.1528821084084.JavaMail.zimbra@efficios.com> <20180614122759.GB8798@amd> <894222691.12973.1528981314012.JavaMail.zimbra@efficios.com> <20180614132557.GA15201@amd> <1110f198-88c2-544d-6836-f901b8e90f98@redhat.com> <1399480624.13011.1528984006717.JavaMail.zimbra@efficios.com> From: Florian Weimer Message-ID: Date: Fri, 15 Jun 2018 07:10:45 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <1399480624.13011.1528984006717.JavaMail.zimbra@efficios.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 15 Jun 2018 05:10:47 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 15 Jun 2018 05:10:47 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'fweimer@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/14/2018 03:46 PM, Mathieu Desnoyers wrote: > This would allow registering various TLS data structures with a single > system call without hindering flexibility on the user-space side. For > instance, we could still use initial-exec and the __rseq_abi symbol for > rseq with this approach. > > Thoughts ? Isn't this just a very narrow case of the usual batched syscalls proposal? 8-) Florian