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 CC652C43381 for ; Tue, 26 Feb 2019 09:22:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97B612173C for ; Tue, 26 Feb 2019 09:22:03 +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="RMulZanl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727622AbfBZJWC (ORCPT ); Tue, 26 Feb 2019 04:22:02 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:58026 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726223AbfBZJWB (ORCPT ); Tue, 26 Feb 2019 04:22:01 -0500 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=HAqDS+0+NT0uQEvK5UDVz2uSLBQrgzEkPgf4DxUtg+0=; b=RMulZanlid7hD9Aa4Aut3fGcd Fe1VEnaMmomt46dYSEDzFU+h1bYZAQ74G6E+ZNi6o2Vs5/9AM6HWHzG8o41U61R50QycIPuK3YVOE t9uM9oGC8z0hCSDQD9WbiLR9g7DlCC/ScoShD7IbhxKg4Gm2m6WYXfY6np6iv+6QrUxeR2pMQgHnV XE+qGU59A9Dm01I+KgJDVGzab88Vbj4rL1ShrL97E4jzAQWCgF+wTV9uP4EDKlbJ3pqUp+uYCkgKM qL0STZnb8Lpw8mEDdvBkOoRyfg9nClxlydIx04HPEgQRCaCmmYuSgbsVM/6rOKweM6vPH97lhGCJ3 YfuQVPyKA==; 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 1gyYvp-0006ii-8T; Tue, 26 Feb 2019 09:21:50 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 1AAB020269AFC; Tue, 26 Feb 2019 10:21:43 +0100 (CET) Date: Tue, 26 Feb 2019 10:21:43 +0100 From: Peter Zijlstra To: "Paul E. McKenney" Cc: Andrea Parri , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Alan Stern , Will Deacon , Boqun Feng , Nicholas Piggin , David Howells , Jade Alglave , Luc Maranget , Akira Yokosawa , Daniel Lustig Subject: Re: [RFC PATCH] tools/memory-model: Remove (dep ; rfi) from ppo Message-ID: <20190226092143.GR32477@hirez.programming.kicks-ass.net> References: <1550617057-4911-1-git-send-email-andrea.parri@amarulasolutions.com> <20190220020117.GD11787@linux.ibm.com> <20190220092604.GD32494@hirez.programming.kicks-ass.net> <20190220131456.GA3215@andrea> <20190220132714.GI32494@hirez.programming.kicks-ass.net> <20190222112128.GA7213@andrea> <20190222130014.GY32494@hirez.programming.kicks-ass.net> <20190225175517.GK4072@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190225175517.GK4072@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 Mon, Feb 25, 2019 at 09:55:17AM -0800, Paul E. McKenney wrote: > Again, if you know of any code in the Linux kernel that would have > problems with aggressive optimizations based on pointer provenance, > please let me know! I've no clue what pointer provenance is to begin with.