From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752592AbcHAOLR (ORCPT ); Mon, 1 Aug 2016 10:11:17 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:42439 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751059AbcHAOLE (ORCPT ); Mon, 1 Aug 2016 10:11:04 -0400 Subject: Re: [PATCH] xen: Make VPMU init message look less scary To: Juergen Gross , linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org References: <1470051680-17273-1-git-send-email-jgross@suse.com> Cc: david.vrabel@citrix.com From: Boris Ostrovsky Message-ID: <9aee84ac-90e2-fd54-9942-4b068a76eac1@oracle.com> Date: Mon, 1 Aug 2016 10:11:14 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <1470051680-17273-1-git-send-email-jgross@suse.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/01/2016 07:41 AM, Juergen Gross wrote: > The default for the Xen hypervisor is to not enable VPMU in order to > avoid security issues. In this case the Linux kernel will issue the > message "Could not initialize VPMU for cpu 0, error -95" which looks > more like an error than a normal state. > > Change the message to something less scary in case the hypervisor > returns EOPNOTSUPP when trying to activate VPMU. > > Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky