From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754323AbbLDRwl (ORCPT ); Fri, 4 Dec 2015 12:52:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39467 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752941AbbLDRwk (ORCPT ); Fri, 4 Dec 2015 12:52:40 -0500 Subject: Re: [PATCH] x86/rapl: Do not load in a guest To: Jacob Pan , Ingo Molnar References: <1449167222-17562-1-git-send-email-bp@alien8.de> <20151204074206.GB24827@gmail.com> <20151204082256.GC17308@twins.programming.kicks-ass.net> <20151204082823.GA31591@gmail.com> <20151204101954.GA21177@pd.tnic> <56616DBF.8040900@redhat.com> <20151204105617.GB21177@pd.tnic> <20151204115335.GB15308@gmail.com> <20151204094642.4c5e63e0@icelake> Cc: Borislav Petkov , "H. Peter Anvin" , Peter Zijlstra , Amy Wiles , "Rafael J. Wysocki" , LKML , Arnaldo Carvalho de Melo , Ingo Molnar , Thomas Gleixner From: Paolo Bonzini Message-ID: <5661D2E1.8040907@redhat.com> Date: Fri, 4 Dec 2015 18:52:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <20151204094642.4c5e63e0@icelake> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/12/2015 18:46, Jacob Pan wrote: > But I still think hypervisor check is sufficient. I don't there will > ever be a use case for VM to control platform level power. A disaster > for sure. There isn't just usual VMs. There are partitioning hypervisors for example. Paolo