From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751951Ab2GOIHl (ORCPT ); Sun, 15 Jul 2012 04:07:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:24139 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549Ab2GOIH2 (ORCPT ); Sun, 15 Jul 2012 04:07:28 -0400 Message-ID: <50027A36.9070509@redhat.com> Date: Sun, 15 Jul 2012 11:07:18 +0300 From: Avi Kivity User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 MIME-Version: 1.0 To: Gleb Natapov CC: David Ahern , Peter Zijlstra , LKML Subject: Re: perf with precise attribute kills all KVM based VMs References: <1341845396.3462.81.camel@twins> <4FFAEFF1.9000706@redhat.com> <1341845999.3462.86.camel@twins> <4FFCBD00.1030109@gmail.com> <20120711071006.GF23898@redhat.com> <1342000187.3462.134.camel@twins> <20120711095337.GJ23898@redhat.com> <4FFE4E8D.90606@gmail.com> <20120712042923.GG7298@redhat.com> <4FFEEB55.5070009@gmail.com> <20120712160634.GI7298@redhat.com> In-Reply-To: <20120712160634.GI7298@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/12/2012 07:06 PM, Gleb Natapov wrote: >> >> Note the :pH this time. > I am not sure what perf kvm does with :pH modifier, but H modifier does > not make sense with perf kvm and should be reported as an error by perf tool. Maybe it should refer to the guest vs. the nested guest... Well that's a horrible UI but we do need some way to distinguish among the two. Samples from the nested guest's kernel will make no sense when looking at the guest kernel. I guess we should default to exclude nested guest mode. -- error compiling committee.c: too many arguments to function