From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ahern Subject: use of PMU in guest generates messages in host Date: Wed, 11 Jan 2012 13:47:55 -0700 Message-ID: <4F0DF57B.5040500@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: KVM mailing list Return-path: Received: from mail-iy0-f174.google.com ([209.85.210.174]:33940 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933068Ab2AKUsA (ORCPT ); Wed, 11 Jan 2012 15:48:00 -0500 Received: by iabz25 with SMTP id z25so1594571iab.19 for ; Wed, 11 Jan 2012 12:47:59 -0800 (PST) Sender: kvm-owner@vger.kernel.org List-ID: Using latest kernel tree (e343a895a9f342f239c5e3c5ffc6c0b1707e6244) which has KVM bits for using PMU in the guest. Host and guest are both running Fedora 16, 64-bit, with this kernel. Running this command in the guest: perf stat -ddd -- openssl speed aes Generates this in the host: [74728.221863] kvm_set_msr_common: 2760 callbacks suppressed [74728.221950] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.222115] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.222858] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.223018] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.223851] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.224009] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.224843] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.224997] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f701 [74728.225842] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f001 [74728.226010] kvm: 28217: cpu2 unhandled wrmsr: 0x1a6 data f001 David