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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 2567FC33CB3 for ; Tue, 14 Jan 2020 22:09:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE6D82467D for ; Tue, 14 Jan 2020 22:09:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579039749; bh=ECleuj4dTD+b2BCowdnKaPUSRFlF08Qh0VJWKgnNCmk=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=cvPlSB5rbGP9faFuRuvPYF+ZQcf25VUHk9f13OmEQzhSrQ2MmQxWhy9ui4zcaLbqq 09FsQDUPqcz1+/lqlD5m+vaQhVtx/aH8plZDAZP00gWCH1t7DX4gY09wfRSBcojoLk azAC4UTXynPaF7dzcbyxm2bjzgA6oqRmNlbJrKwk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728834AbgANWJI (ORCPT ); Tue, 14 Jan 2020 17:09:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:48710 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726491AbgANWJH (ORCPT ); Tue, 14 Jan 2020 17:09:07 -0500 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (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 B8E4324656; Tue, 14 Jan 2020 22:09:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579039746; bh=ECleuj4dTD+b2BCowdnKaPUSRFlF08Qh0VJWKgnNCmk=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=eHTtZBZKOoGJ5TnBdVzafZ9IqoFNKO1oyUzy7DkBMs5u7spsmQX66h41FXlba/RCj fFKn8Z+WQsZgNBLOf31Xev+rUXAqnIZjrdygfiGaNerFjb2nayD5CpA9N2FqLiWSlt 4xKRdwLbAL8ghkcGFgHLf5OyEGHIfOqC//FDPdds= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 6CBEA3522755; Tue, 14 Jan 2020 14:09:06 -0800 (PST) Date: Tue, 14 Jan 2020 14:09:06 -0800 From: "Paul E. McKenney" To: Qian Cai Cc: Marco Elver , LKMM Maintainers -- Akira Yokosawa , Alan Stern , Alexander Potapenko , Andrea Parri , Andrey Konovalov , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Boqun Feng , Borislav Petkov , Daniel Axtens , Daniel Lustig , Dave Hansen , David Howells , Dmitry Vyukov , "H. Peter Anvin" , Ingo Molnar , Jade Alglave , Joel Fernandes , Jonathan Corbet , Josh Poimboeuf , Luc Maranget , Mark Rutland , Nicholas Piggin , Peter Zijlstra , Thomas Gleixner , Will Deacon , Eric Dumazet , kasan-dev , linux-arch , "open list:DOCUMENTATION" , linux-efi@vger.kernel.org, Linux Kbuild mailing list , LKML , Linux Memory Management List , the arch/x86 maintainers Subject: Re: [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure Message-ID: <20200114220906.GZ2935@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20200114213405.GX2935@paulmck-ThinkPad-P72> <9970E373-DF70-4FE4-A839-AAE641612EC5@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <9970E373-DF70-4FE4-A839-AAE641612EC5@lca.pw> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 14, 2020 at 04:48:22PM -0500, Qian Cai wrote: > > > > On Jan 14, 2020, at 4:34 PM, Paul E. McKenney wrote: > > > > As an alternative, once the patches needed for your tests to pass > > reach mainline, you could announce that KCSAN was ready to be enabled > > in distros. > > > > Though I confess that I don't know how that works. Is there a separate > > testing kernel binary provided by the distros in question? > > I don’t think I have powers to announce that. Once the feature hit the mainline, distro people could start to use in the debug kernel variant, and it is a shame to only find out it is broken. Anyway, I’ll try to edge out those corner cases. Stay tuned. Very good, thank you! And you do have the power to announce. But just like most of the rest of use, myself included, you won't always have the power to make people actually pay attention to what you say. ;-) Thanx, Paul From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: [PATCH v4 01/10] kcsan: Add Kernel Concurrency Sanitizer infrastructure Date: Tue, 14 Jan 2020 14:09:06 -0800 Message-ID: <20200114220906.GZ2935@paulmck-ThinkPad-P72> References: <20200114213405.GX2935@paulmck-ThinkPad-P72> <9970E373-DF70-4FE4-A839-AAE641612EC5@lca.pw> Reply-To: paulmck@kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <9970E373-DF70-4FE4-A839-AAE641612EC5@lca.pw> Sender: linux-kbuild-owner@vger.kernel.org To: Qian Cai Cc: Marco Elver , LKMM Maintainers -- Akira Yokosawa , Alan Stern , Alexander Potapenko , Andrea Parri , Andrey Konovalov , Andy Lutomirski , Ard Biesheuvel , Arnd Bergmann , Boqun Feng , Borislav Petkov , Daniel Axtens , Daniel Lustig , Dave Hansen , David Howells , Dmitry Vyukov , "H. Peter Anvin" , Ingo Molnar , Jade Alglave , Joel Fernandes List-Id: linux-arch.vger.kernel.org On Tue, Jan 14, 2020 at 04:48:22PM -0500, Qian Cai wrote: > > > > On Jan 14, 2020, at 4:34 PM, Paul E. McKenney wrote: > > > > As an alternative, once the patches needed for your tests to pass > > reach mainline, you could announce that KCSAN was ready to be enabled > > in distros. > > > > Though I confess that I don't know how that works. Is there a separate > > testing kernel binary provided by the distros in question? > > I don’t think I have powers to announce that. Once the feature hit the mainline, distro people could start to use in the debug kernel variant, and it is a shame to only find out it is broken. Anyway, I’ll try to edge out those corner cases. Stay tuned. Very good, thank you! And you do have the power to announce. But just like most of the rest of use, myself included, you won't always have the power to make people actually pay attention to what you say. ;-) Thanx, Paul