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 EEB0BC28CBC for ; Wed, 6 May 2020 18:46:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D111220735 for ; Wed, 6 May 2020 18:46:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588790792; bh=XTmDNV/ZsBnYfje7jioNFGKlv3IcopUwbb8tFnmZDss=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=ct2DAmwFPazinqG3E7j15bkyp6FBt6QIt9aa+Hx9HEbGIfK/Mgy9GXVvhYS2O9TUb WcpZtPTaD21RK9PpGmsHP4jvLWZdubz9GIhpqxFHHtByrvjjCpflK8xpZX26Uvc7Ec E1IPylSsswsukGEdwt0EgBow/+ft8LhxJ1bA9lzY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730502AbgEFSqc (ORCPT ); Wed, 6 May 2020 14:46:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:48302 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728619AbgEFSqb (ORCPT ); Wed, 6 May 2020 14:46:31 -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 D32AD20708; Wed, 6 May 2020 18:46:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588790790; bh=XTmDNV/ZsBnYfje7jioNFGKlv3IcopUwbb8tFnmZDss=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=o8Ra2HgQFTquWaSCsLID/U+dxQNzRqA68sMAJLeFvKZMcgRy9OBFkaKdFDeffCCEP OcVW6k72CNTfcAgRs/TT6XV7O3QPH1vy82xRVXObHaOeoMwReMgEeZIZGZun4QJDbR +zHpEz68Tza509oeJ/VN9MwRXXXT+bzKv/pX81eY= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id C4FCC352306C; Wed, 6 May 2020 11:46:30 -0700 (PDT) Date: Wed, 6 May 2020 11:46:30 -0700 From: "Paul E. McKenney" To: Peter Zijlstra Cc: Alexandre Chartre , Thomas Gleixner , LKML , x86@kernel.org, Andy Lutomirski , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon Subject: Re: [patch V4 part 1 03/36] sched: Clean up scheduler_ipi() Message-ID: <20200506184630.GF2869@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20200505131602.633487962@linutronix.de> <20200505134058.361859938@linutronix.de> <20200506153300.GB5281@hirez.programming.kicks-ass.net> <20200506182856.GD2869@paulmck-ThinkPad-P72> <20200506183703.GJ5298@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200506183703.GJ5298@hirez.programming.kicks-ass.net> 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 08:37:03PM +0200, Peter Zijlstra wrote: > On Wed, May 06, 2020 at 11:28:56AM -0700, Paul E. McKenney wrote: > > I still see warnings of the form "leave instruction with modified stack > > frame" from older complilers and of the form "undefined stack state" > > from newer compilers. I am running stock objtool versions, so I am > > guessing that this is at least one reason for these warnings. > > Part 5, patch 2, might be responsible. I still have to look at curing > that. Very good, I will await further patches. Thanx, Paul