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, URIBL_BLOCKED,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 3C58EC28CBC for ; Wed, 6 May 2020 14:36:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1359120836 for ; Wed, 6 May 2020 14:36:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588775778; bh=aLWjSnjjo2PT3Npfpel+8huQZQfm2NUKfytKskttSRk=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=HAfuOwTwZhNhBxfnwXUJLUgDP+Up85zplVLhz0ukx5m85q2jAVAdRSpif8J3U5zR7 pXAOYWu0clqLsKyFPnlOwWK84uxQA8aeDNyorjKOzxYgMXJRvIafMiUNWrx/aefN42 Kn1UE0KZ4EO2XbTUWpfxsF6Jq0ycU5DbHNoAsmlo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729138AbgEFOgR (ORCPT ); Wed, 6 May 2020 10:36:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:33622 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728712AbgEFOgQ (ORCPT ); Wed, 6 May 2020 10:36:16 -0400 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 498782076D; Wed, 6 May 2020 14:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588775776; bh=aLWjSnjjo2PT3Npfpel+8huQZQfm2NUKfytKskttSRk=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=fvhcoFABTbH0WquTBCFaLsADbDanAfBKk2hmQTakjNTlp0tM34/g3Lbc2UuIK2+BK wPrdMNfJW2zcLvkYuRDvRtWOdD4IJF3j5vH+4xH29vOM78xxp5Q9/MvfOexkTB6t/y 2030Q+9LY9WG1CCylOid08zZ1Fqt9up6g4djPWzw= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 3139835227D0; Wed, 6 May 2020 07:36:16 -0700 (PDT) Date: Wed, 6 May 2020 07:36:16 -0700 From: "Paul E. McKenney" To: Will Deacon Cc: mingo@kernel.org, tglx@linutronix.de, peterz@infradead.org, elver@google.com, linux-kernel@vger.kernel.org Subject: Re: Please can I have a stable KCSAN branch for 5.8? Message-ID: <20200506143616.GY2869@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20200506132816.GJ8043@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200506132816.GJ8043@willie-the-truck> 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 Wed, May 06, 2020 at 02:28:17PM +0100, Will Deacon wrote: > Hi TIP folks, > > I'm looking to rebase my READ_ONCE() series [1] on top of the KCSAN patches > so that we can get them in for 5.8. However, tip/locking/kcsan seems to be > missing some bits: > > * An update to checkpatch.pl to warn about missing comments for > data_race(): > > https://lore.kernel.org/r/20200401101714.44781-1-elver@google.com For some reason, I thought this was going up some other tree, but I do not see it in -next. So unless I hear otherwise, I will pull it into the v5.8 kcsan branch. > * I'm unable to apply these two patches from Marco that are needed for > my READ_ONCE() work: > > https://lore.kernel.org/lkml/20200424154730.190041-1-elver@google.com/ > > I think these depend on stuff that has been queued by Paul, and appears > in linux-next, but to be honest with you I'm quite confused about what > is queued for 5.8 and what isn't. This one is queued, but I currently have it in the v5.9 pile (but tentatively for v5.8). Unless Marco tells me otherwise, I will move it to the v5.8 branch, which will be part of my pull request next week. > What's the best base for me to use? The -next tree has the latter, but not yet the former. Hopefully we can get this straightened out, and please accept my apologies for the hassle! Thanx, Paul > Cheers, > > Will > > [1] https://lore.kernel.org/r/20200421151537.19241-1-will@kernel.org