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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 DB50AC43387 for ; Wed, 9 Jan 2019 23:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ADBFB20661 for ; Wed, 9 Jan 2019 23:40:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726744AbfAIXkw (ORCPT ); Wed, 9 Jan 2019 18:40:52 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:33820 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726286AbfAIXkv (ORCPT ); Wed, 9 Jan 2019 18:40:51 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x09NYBOE120046 for ; Wed, 9 Jan 2019 18:40:50 -0500 Received: from e17.ny.us.ibm.com (e17.ny.us.ibm.com [129.33.205.207]) by mx0b-001b2d01.pphosted.com with ESMTP id 2pwsdvu52s-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 09 Jan 2019 18:40:50 -0500 Received: from localhost by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 9 Jan 2019 23:40:44 -0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22035.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x09Nehxm22020320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 9 Jan 2019 23:40:43 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 45BF3B205F; Wed, 9 Jan 2019 23:40:43 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 25E51B2067; Wed, 9 Jan 2019 23:40:43 +0000 (GMT) Received: from paulmck-ThinkPad-W541 (unknown [9.70.82.88]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 9 Jan 2019 23:40:43 +0000 (GMT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 0D92B16C63FE; Wed, 9 Jan 2019 15:40:43 -0800 (PST) Date: Wed, 9 Jan 2019 15:40:43 -0800 From: "Paul E. McKenney" To: Andrea Parri Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, mingo@kernel.org, stern@rowland.harvard.edu, parri.andrea@gmail.com, will.deacon@arm.com, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, akiyks@gmail.com, willy@infradead.org Subject: Re: [PATCH RFC memory-model 0/6] LKMM updates Reply-To: paulmck@linux.ibm.com References: <20190109210706.GA27268@linux.ibm.com> <20190109231852.GA4494@andrea> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190109231852.GA4494@andrea> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 19010923-0040-0000-0000-000004AF412E X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010375; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000274; SDB=6.01144189; UDB=6.00593882; IPR=6.00924451; MB=3.00025056; MTD=3.00000008; XFM=3.00000015; UTC=2019-01-09 23:40:48 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19010923-0041-0000-0000-000008BA45CF Message-Id: <20190109234043.GD1215@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-09_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901090189 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 10, 2019 at 12:18:53AM +0100, Andrea Parri wrote: > On Wed, Jan 09, 2019 at 01:07:06PM -0800, Paul E. McKenney wrote: > > Hello! > > > > This series contains updates for the Linux-kernel memory model: > > > > 1-3. Add SRCU support, courtesy of Alan Stern. > > > > 4. Update README for adding of SRCU support. > > > > 5. Update memory-barriers.txt on enforcing heavy ordering for > > port-I/O accesses, courtesy of Will Deacon. This one needs > > an ack, preferably by someone from Intel. Matthew Wilcox > > posted some feedback from an Intel manual here, which might > > be considered to be a close substitute, but... ;-) > > > > http://lkml.kernel.org/r/20181127192234.GF10377@bombadil.infradead.org > > > > 6. Update Documentation/explanation.txt to include SRCU support, > > courtesy of Alan Stern. > > > > 7. Dynamically check SRCU lock-to-unlock matching, courtesy of > > Luc Maranget. This needs an ack. > > It seems that > > 1b52d0186177 ("tools/memory-model: Model smp_mb__after_unlock_lock()") > > from linux-rcu/dev got lost; this also needs an ack (probably yours! ;D, > considered that, IIRC, you introduced the primitive and RCU is currently > its only user.) That commit is in -tip: 4607abbcf464 ("tools/memory-model: Model smp_mb__after_unlock_lock()") So it has already left my -rcu tree. ;-) Thanx, Paul