From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cyrill Gorcunov Subject: Re: perf uncore & lkvm woes Date: Thu, 16 Aug 2012 13:06:02 +0400 Message-ID: <20120816090602.GG32081@moon> References: <1345101585.31459.112.camel@twins> <502CA368.8050404@linux.intel.com> <20120816074606.GC32081@moon> <502CB340.7080205@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Pekka Enberg , "Yan, Zheng" , Peter Zijlstra , Sasha Levin , Asias He , Ingo Molnar , KVM General To: Avi Kivity Return-path: Received: from mail-lpp01m010-f46.google.com ([209.85.215.46]:61854 "EHLO mail-lpp01m010-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756512Ab2HPJGG (ORCPT ); Thu, 16 Aug 2012 05:06:06 -0400 Received: by lagy9 with SMTP id y9so1332460lag.19 for ; Thu, 16 Aug 2012 02:06:05 -0700 (PDT) Content-Disposition: inline In-Reply-To: <502CB340.7080205@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Aug 16, 2012 at 11:45:52AM +0300, Avi Kivity wrote: > >> On Thu, Aug 16, 2012 at 10:38 AM, Yan, Zheng > >> wrote: > >> > The Intel uncore doc does not specify how to check if uncore exist. > >> > How about disabling uncore on virtualized CPU? > >> > >> (CC'ing Avi.) > > > > Why not simply add bootline option for that? Would it be acceptible? > > Most users just install a distro, they don't mess with kernel command lines. The command line option might be added implicitly in qemu/lkvm.