Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp3551837ybv; Mon, 10 Feb 2020 02:01:37 -0800 (PST) X-Google-Smtp-Source: APXvYqw7KmaHo9I/x7B/S6lJudnQSD+2zmlcsbyYGcLqZ643AF/IU0vIzeC03MN0ieLSLgyfolMl X-Received: by 2002:a9d:6d1a:: with SMTP id o26mr436057otp.141.1581328897616; Mon, 10 Feb 2020 02:01:37 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1581328897; cv=none; d=google.com; s=arc-20160816; b=cFQfM7KLs4O7ABO6RIo3hdQJV/5/TQu0LrNKMHcsU2qbYrxHJGHzfZ7PPz+9dhGwnZ V25nGQsZWh2eDbJwakY78X57VIMj1vsV5Qz56q3fkv7jwW4bhVNHSA/8IAmsU8ygvaci MrCTe3fL2qTVYIXhvR+vnhqo9uRw/Ehvn3SXuVKQGu1lPk0xjZhafte1bbSiOmQ6jVDs fOk0DSYGC6N//jRq749JfsDAE0+PNfgiCbNVnJOg7FrgnduexsaCQ9kE/Eq6mHK3pe4r WGEiN0ypP/IN0LuaP5dcou5MZbzPDyQlKGrJJjm617oMW0jvSJUHQkV0c25M6/xRPV+V Uggw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=WUGsTysu/irTdsg7KEAC+Z1jcvpp0XdFY7EqHJQQeCE=; b=C1U+NEokCvPygYldjZF0z+BcrRY/ysi2FKyGC0RQcvRd4aIoOLgfYmEaBaAnwalIFl PuT40HvuR34kaK4SW1IylGC2Cgnv32aOyNvkkowi0KzeswhzuzCUNPJR2eLIWed637Xt eMB1XRIVBjAZEMVVG6zftB6mQIb9OAhg74WOfaO8NZ/swCS1QCOo9eAAih94NDSnnqWz IQXC9TI6m0+g+LC2aXx+1DnCdjtYsxMa8baa/L9qDNXMF+p+JCVrbzn+QwunSmBgB64Y LA5bv1YrMufx0ioY3R7RIEFDPgRIs6tUQnX1QiC1DHBxM7WRtVyDVTA076Fa29ec8CyT aD1Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=xvupraef; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k19si4407759otp.33.2020.02.10.02.01.25; Mon, 10 Feb 2020 02:01:37 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=xvupraef; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727431AbgBJKAD (ORCPT + 99 others); Mon, 10 Feb 2020 05:00:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:35178 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726451AbgBJKAD (ORCPT ); Mon, 10 Feb 2020 05:00:03 -0500 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 681D1208C4; Mon, 10 Feb 2020 10:00:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581328802; bh=Dn46n2AYSU+Z2vVl+we06BNQDli46LIuwB29XqOrtZs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=xvupraef/J5VNBksDf2N2owNALT325yZj25BG93XIBMcTAKsB8SzyYZvunwJ6Wjrg eI8dvJJTfu7dNBhBuRYP4DjhoFvE41BYy/dRv9qxoB0tiHyBDW6X7z1xyswhZtoWw2 wGvV7tOl3q7l1mwiZ2Zk6ZD1r/MiR7y62HKLUPGk= Date: Mon, 10 Feb 2020 09:59:56 +0000 From: Will Deacon To: Masahiro Yamada Cc: Peter Zijlstra , Linus Torvalds , Linux Kernel Mailing List , linux-arch , Android Kernel Team , Michael Ellerman , Segher Boessenkool , Christian Borntraeger , Luc Van Oostenryck , Arnd Bergmann , Peter Oberparleiter , Nick Desaulniers Subject: Re: [PATCH v2 00/10] Rework READ_ONCE() to improve codegen Message-ID: <20200210095956.GA15056@willie-the-truck> References: <20200123153341.19947-1-will@kernel.org> <20200124083307.GA14914@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 10, 2020 at 06:50:53PM +0900, Masahiro Yamada wrote: > On Fri, Jan 24, 2020 at 5:33 PM Peter Zijlstra wrote: > > > > On Thu, Jan 23, 2020 at 09:59:03AM -0800, Linus Torvalds wrote: > > > On Thu, Jan 23, 2020 at 7:33 AM Will Deacon wrote: > > > > > > > > This is version two of the patches I previously posted as an RFC here: > > > > > > Looks fine to me, as far as I can tell, > > > > Awesome, I've picked them up with a target for tip/locking/core. > > Were they really picked up? > > The MW is closed now, but I do not them in Linus' tree. > I do not see them even in linux-next. We ended up running into build issues with m68k which took quite a bit of effort to fix, so that meant we missed the merge window. It also seems that we've now run into similar looking issues for sparc32 :( Will