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=-7.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 F1850C2D0DB for ; Sat, 25 Jan 2020 20:08:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B531F20716 for ; Sat, 25 Jan 2020 20:08:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579982936; bh=fyzCA+S+g1b9voiVU+2pgEFejT8fxUzKy55EmnHYVNE=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=iOtrDTRpKwf+pd3d6wsQIAwxQj5/p6tmJphuvQe0SzX3E7spUnLsymbkXZAGC0Vpt wI/snmdqkjuj6Tdtik1j7C1DlA4Ixv4U6CCkAI/sWcEH1ZuqKttIpEJ3U32MPuMVRw kLP/KdN/VgwGV8jYEMozkx7PmGI2pDE7vXacvF10= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727307AbgAYUIz (ORCPT ); Sat, 25 Jan 2020 15:08:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:37192 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726448AbgAYUIz (ORCPT ); Sat, 25 Jan 2020 15:08:55 -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 6A1AD20716; Sat, 25 Jan 2020 20:08:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579982934; bh=fyzCA+S+g1b9voiVU+2pgEFejT8fxUzKy55EmnHYVNE=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=Md3vcYDH2OQGslCG7UQ/QlFWHIVJj2NO5pE0mR+LTJhs8mKLk1utf64N1GkEf6E/Y Cx5YOfTjcQQQCX8WaCMSZdMW1EjICCKZaGJILVBwLNFabpboqQl6Pko4QzOCalpRZX 3uHrgWxJGR5XuRYf6N+I+8Sc4fGn8eH25lz0gHXo= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 3A872352274E; Sat, 25 Jan 2020 12:08:54 -0800 (PST) Date: Sat, 25 Jan 2020 12:08:54 -0800 From: "Paul E. McKenney" To: Borislav Petkov Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, x86 Subject: Re: [tip: core/rcu] rcu: Enable tick for nohz_full CPUs slow to provide expedited QS Message-ID: <20200125200854.GA8673@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <157994897654.396.5667707782512768142.tip-bot2@tip-bot2> <20200125131425.GB16136@zn.tnic> <20200125161050.GE2935@paulmck-ThinkPad-P72> <20200125175442.GA4369@zn.tnic> <20200125194846.GF2935@paulmck-ThinkPad-P72> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200125194846.GF2935@paulmck-ThinkPad-P72> 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 Sat, Jan 25, 2020 at 11:48:46AM -0800, Paul E. McKenney wrote: > On Sat, Jan 25, 2020 at 06:54:42PM +0100, Borislav Petkov wrote: > > On Sat, Jan 25, 2020 at 08:10:50AM -0800, Paul E. McKenney wrote: [ . . . ] > > > If that works, I will re-introduce the warning with proper protection > > > for the merge window following this coming one. > > > > My big box is at your service if you need stuff tested later. > > Thank you in advance! I just might take you up on that! And I do have an alleged fix on branch dev of the -rcu tree: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git I am just now starting testing, so the probability of failure is decidedly non-zero. ;-) Thanx, Paul