From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: [PATCH RFC memory-model 0/6] LKMM updates Date: Wed, 9 Jan 2019 15:40:43 -0800 Message-ID: <20190109234043.GD1215@linux.ibm.com> References: <20190109210706.GA27268@linux.ibm.com> <20190109231852.GA4494@andrea> Reply-To: paulmck@linux.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190109231852.GA4494@andrea> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: linux-arch.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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44756 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726425AbfAIXkv (ORCPT ); Wed, 9 Jan 2019 18:40:51 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x09NYAxe068236 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 2pws7vkn25-1 (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! Violators will be prosecuted for from ; Wed, 9 Jan 2019 23:40:49 -0000 Date: Wed, 9 Jan 2019 15:40:43 -0800 From: "Paul E. McKenney" 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> Message-ID: <20190109234043.GD1215@linux.ibm.com> Sender: linux-arch-owner@vger.kernel.org List-ID: 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 Message-ID: <20190109234043.gJmKv2fxF2yFdQWQ9GE1UBAZOw-lv9pfSRlJVM-YJkY@z> 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