From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754199AbcEQLef (ORCPT ); Tue, 17 May 2016 07:34:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:44347 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752241AbcEQLed (ORCPT ); Tue, 17 May 2016 07:34:33 -0400 From: Prarit Bhargava To: linux-kernel@vger.kernel.org Cc: Prarit Bhargava , Srinivas Pandruvada , Jacob Jun Pan , "Rafael J. Wysocki" , linux-pm@vger.kernel.org Subject: [PATCH] powercap/rapl: Do not load in virtualized environments Date: Tue, 17 May 2016 07:34:05 -0400 Message-Id: <1463484845-9839-1-git-send-email-prarit@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Tue, 17 May 2016 11:34:19 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org intel_rapl is currently not supported in virtualized environments. When booting the warning message intel_rapl: no valid rapl domains found in package 0 is output for every virtual core. This patch stops the driver from being loaded in virtual boots. Cc: Srinivas Pandruvada Cc: Jacob Jun Pan Cc: "Rafael J. Wysocki" Cc: linux-pm@vger.kernel.org Signed-off-by: Prarit Bhargava --- drivers/powercap/intel_rapl.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c index f2201d42a9cd..bebfbe8acccd 100644 --- a/drivers/powercap/intel_rapl.c +++ b/drivers/powercap/intel_rapl.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include @@ -1600,6 +1601,10 @@ static int __init rapl_init(void) return -ENODEV; } + /* Intel RAPL is not supported on virtualized environments */ + if (x86_hyper) + return -ENODEV; + rapl_defaults = (struct rapl_defaults *)id->driver_data; cpu_notifier_register_begin(); -- 1.7.9.3