From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: Houston, we have May 15, 1953 (says guest when host uses cpufreq, and dies) Date: Wed, 18 Feb 2009 14:37:42 -0600 Message-ID: <499C7196.7050001@codemonkey.ws> References: <499C206A.5050109@wpkg.org> <499C3131.3030601@codemonkey.ws> <499C3327.3090207@wpkg.org> <499C3E6E.4050807@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Tomasz Chmielewski , kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from mail-qy0-f11.google.com ([209.85.221.11]:42691 "EHLO mail-qy0-f11.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753407AbZBRUiO (ORCPT ); Wed, 18 Feb 2009 15:38:14 -0500 Received: by qyk4 with SMTP id 4so143336qyk.13 for ; Wed, 18 Feb 2009 12:38:13 -0800 (PST) In-Reply-To: <499C3E6E.4050807@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: Avi Kivity wrote: > Tomasz Chmielewski wrote: >> Looks I'm a bad, bad, anti-environment CO2 contributor then. >> >> From a technical perspective, what are the problems with my CPU that >> it scales down on the host just fine, but makes the guests "return to >> the past"? > > What kvm version are you using? kvm-84 should fix this. Are you suggesting that one should use cpufreq on a CPU without a constant tsc? Isn't this just asking for trouble? Regards, Anthony Liguori