From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757902Ab2FZAjF (ORCPT ); Mon, 25 Jun 2012 20:39:05 -0400 Received: from LGEMRELSE7Q.lge.com ([156.147.1.151]:45941 "EHLO LGEMRELSE7Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756821Ab2FZAjD (ORCPT ); Mon, 25 Jun 2012 20:39:03 -0400 X-AuditID: 9c930197-b7c94ae0000037ff-15-4fe904a4d4db From: Namhyung Kim To: David Ahern Cc: linux-kernel@vger.kernel.org, psuriset@linux.vnet.ibm.com, Arnaldo Carvalho de Melo , Ingo Molnar , Jiri Olsa , Frederic Weisbecker , Peter Zijlstra Subject: Re: [PATCH] perf kvm: fix segfault with default guest arguments References: <1340599286-89757-1-git-send-email-dsahern@gmail.com> <877guvwzt1.fsf@sejong.aot.lge.com> <4FE85EB6.80908@gmail.com> <4FE8B656.4080201@gmail.com> Date: Tue, 26 Jun 2012 09:35:14 +0900 In-Reply-To: <4FE8B656.4080201@gmail.com> (David Ahern's message of "Mon, 25 Jun 2012 13:04:54 -0600") Message-ID: <87395ix64d.fsf@sejong.aot.lge.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.97 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 25 Jun 2012 13:04:54 -0600, David Ahern wrote: > On 6/25/12 6:51 AM, David Ahern wrote: >> On 6/25/12 2:39 AM, Namhyung Kim wrote >>> >>> I don't know about the kvm, but isn't there a possibility that the same >>> thing happends on other types of event too - i.e. comm, fork, exit..? >> >> COMM, FORK, EXIT events cannot be generated in the guest of a guest; >> host machine is always non-NULL. > > s/guest of a guest/context of a guest/ > > [That's I what get for rushing an email as I run out the door this morning.] :) Thanks for the correction! Thanks, Namhyung