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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 33952C43219 for ; Fri, 3 May 2019 15:19:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 05AAA2087F for ; Fri, 3 May 2019 15:19:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="gfQANTdr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728280AbfECPTU (ORCPT ); Fri, 3 May 2019 11:19:20 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:53228 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726480AbfECPTT (ORCPT ); Fri, 3 May 2019 11:19:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=wBcs/GPdYlZGvq1t4SvrIDHfNZxY4cOY/VusREli/MY=; b=gfQANTdrHNW5l6B5vDi2+yPJn zx0Tt2OIg7XKWWRb2JhOCiSxvrLuOEHiPTkzP5AKuPlhrM8RNQAmqctsTp8600c9KoBEnrnAY6Gyr IvKi/GUHjKTCfhBFbSTm8sMJDmEqVe3fI04Dad0NlXyDuFKvkYZ/9TZS2YCKNyLGdIu46Kg+RGsO4 hME5IV3Vz+bJSP2TWL2lwvI6v9XI4udZikrHffj82dDrSPe5M4sd4rJLy931EBmlRIIu3BOceUTbs yhP2wue+1e/DPkhqFcZFgmJDrdmsGnGZLC/9LcLkYwM2D83YVMZ8nm52Qepqd9nHJt0YmieimA7f1 LGIoVe3Xw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hMZy1-00068f-85; Fri, 03 May 2019 15:19:17 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 15A2E29B7D6A1; Fri, 3 May 2019 17:19:15 +0200 (CEST) Date: Fri, 3 May 2019 17:19:15 +0200 From: Peter Zijlstra To: "Paul E. McKenney" Cc: stern@rowland.harvard.edu, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Subject: Re: f68f031d ("Documentation: atomic_t.txt: Explain ordering provided by smp_mb__{before,after}_atomic()") Message-ID: <20190503151915.GD2606@hirez.programming.kicks-ass.net> References: <20190503145326.GA21541@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190503145326.GA21541@linux.ibm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 03, 2019 at 07:53:26AM -0700, Paul E. McKenney wrote: > Hello, Alan, > > Just following up on the -rcu commit below. I believe that it needs > some adjustment given Peter Zijlstra's addition of "memory" to the x86 > non-value-returning atomics, but thought I should double-check. Right; I should get back to that thread...