From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755563AbdEHVS1 (ORCPT ); Mon, 8 May 2017 17:18:27 -0400 Received: from mail.kernel.org ([198.145.29.136]:43954 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751834AbdEHVSZ (ORCPT ); Mon, 8 May 2017 17:18:25 -0400 Date: Mon, 8 May 2017 17:18:20 -0400 From: Steven Rostedt To: "Paul E. McKenney" Cc: Josh Poimboeuf , Petr Mladek , Jessica Yu , Jiri Kosina , Miroslav Benes , live-patching@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] livepatch/rcu: Warn when system consistency is broken in RCU code Message-ID: <20170508171820.7cfa21cb@gandalf.local.home> In-Reply-To: <20170508210754.GE3956@linux.vnet.ibm.com> References: <1493895316-19165-1-git-send-email-pmladek@suse.com> <1493895316-19165-3-git-send-email-pmladek@suse.com> <20170508165108.d3vd4h6ffa25bfui@treble> <20170508151322.76e8e9db@gandalf.local.home> <20170508194729.jjq7qrc7gkiq2s5v@treble> <20170508201558.GD3956@linux.vnet.ibm.com> <20170508204333.xc3isvr4riv26his@treble> <20170508210754.GE3956@linux.vnet.ibm.com> X-Mailer: Claws Mail 3.14.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 8 May 2017 14:07:54 -0700 "Paul E. McKenney" wrote: > Except that, as Steven will quickly point out, this won't work at the > very edges of the NMI, when NMI_MASK won't be set in preempt_count(). I believe those parts of the NMI has "notrace" because it can break other parts of ftrace too. -- Steve