From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753855AbdLLNuZ (ORCPT ); Tue, 12 Dec 2017 08:50:25 -0500 Received: from merlin.infradead.org ([205.233.59.134]:60612 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753639AbdLLNuI (ORCPT ); Tue, 12 Dec 2017 08:50:08 -0500 Date: Tue, 12 Dec 2017 14:49:52 +0100 From: Peter Zijlstra To: linux-kernel@vger.kernel.org, ppaalanen@gmail.com, lyude@redhat.com, rostedt@goodmis.org, mingo@kernel.org, tglx@linutronix.de, kherbst@redhat.com, torvalds@linux-foundation.org, hpa@zytor.com Cc: linux-tip-commits@vger.kernel.org Subject: Re: [tip:x86/urgent] x86/mm/kmmio: Fix mmiotrace for page unaligned addresses Message-ID: <20171212134952.2hok6754245qshv3@hirez.programming.kicks-ass.net> References: <20171127075139.4928-1-kherbst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 12, 2017 at 02:55:30AM -0800, tip-bot for Karol Herbst wrote: > Commit-ID: 6d60ce384d1d5ca32b595244db4077a419acc687 > Gitweb: https://git.kernel.org/tip/6d60ce384d1d5ca32b595244db4077a419acc687 > Author: Karol Herbst > AuthorDate: Mon, 27 Nov 2017 08:51:39 +0100 > Committer: Ingo Molnar > CommitDate: Mon, 11 Dec 2017 15:35:18 +0100 > > x86/mm/kmmio: Fix mmiotrace for page unaligned addresses OK, let me hijack this thread since apparently people use and care about mmiotrace. I was recently auditing the x86 tlb flushing and ran across this 'thing'. Can someone please explain to me how this is supposed to work and how its not completely broken?