From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3280 invoked by alias); 7 Feb 2014 17:20:59 -0000 Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org Received: (qmail 3270 invoked by uid 89); 7 Feb 2014 17:20:58 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.7 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: merlin.infradead.org Received: from merlin.infradead.org (HELO merlin.infradead.org) (205.233.59.134) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Fri, 07 Feb 2014 17:20:58 +0000 Received: from dhcp-077-248-225-117.chello.nl ([77.248.225.117] helo=laptop) by merlin.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1WBp6l-0001Jl-3e; Fri, 07 Feb 2014 17:20:55 +0000 Received: by laptop (Postfix, from userid 1000) id 48F3610872B7D; Fri, 7 Feb 2014 18:20:53 +0100 (CET) Date: Fri, 07 Feb 2014 17:20:00 -0000 From: Peter Zijlstra To: Will Deacon Cc: "Paul E. McKenney" , Torvald Riegel , Ramana Radhakrishnan , David Howells , "linux-arch@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "torvalds@linux-foundation.org" , "akpm@linux-foundation.org" , "mingo@kernel.org" , "gcc@gcc.gnu.org" Subject: Re: [RFC][PATCH 0/5] arch: atomic rework Message-ID: <20140207172053.GT5002@laptop.programming.kicks-ass.net> References: <20140206192743.GH4250@linux.vnet.ibm.com> <1391721423.23421.3898.camel@triegel.csb> <20140206221117.GJ4250@linux.vnet.ibm.com> <1391730288.23421.4102.camel@triegel.csb> <20140207042051.GL4250@linux.vnet.ibm.com> <20140207074405.GM5002@laptop.programming.kicks-ass.net> <20140207165028.GO4250@linux.vnet.ibm.com> <20140207165548.GR5976@mudshark.cambridge.arm.com> <20140207170654.GQ5002@laptop.programming.kicks-ass.net> <20140207171336.GU5976@mudshark.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140207171336.GU5976@mudshark.cambridge.arm.com> User-Agent: Mutt/1.5.21 (2012-12-30) X-SW-Source: 2014-02/txt/msg00085.txt.bz2 On Fri, Feb 07, 2014 at 05:13:36PM +0000, Will Deacon wrote: > Understood, but that doesn't explain why Paul wants to add ISB/isync > instructions which affect the *CPU* rather than the compiler! I doubt Paul wants it, but yeah, I'm curious about that proposal as well, sounds like someone took a big toke from the bong again; it seems a favourite past time amongst committees.