From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: Houston, we have May 15, 1953 (says guest when host uses cpufreq, and dies) Date: Wed, 18 Feb 2009 17:03:59 -0300 Message-ID: <20090218200359.GA26940@amt.cnet> References: <499C206A.5050109@wpkg.org> <20090218184611.GG25719@amt.cnet> <499C5917.4010700@wpkg.org> <20090218185734.GA26408@amt.cnet> <499C5C84.7010203@wpkg.org> <20090218191025.GB26408@amt.cnet> <499C5F1A.50206@wpkg.org> <20090218193200.GA26654@amt.cnet> <499C6957.6030908@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org, Glauber de Oliveira Costa To: Tomasz Chmielewski Return-path: Received: from mx2.redhat.com ([66.187.237.31]:37183 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751411AbZBRUEp (ORCPT ); Wed, 18 Feb 2009 15:04:45 -0500 Content-Disposition: inline In-Reply-To: <499C6957.6030908@wpkg.org> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Feb 18, 2009 at 09:02:31PM +0100, Tomasz Chmielewski wrote: > Marcelo Tosatti schrieb: >> On Wed, Feb 18, 2009 at 08:18:50PM +0100, Tomasz Chmielewski wrote: >>> Marcelo Tosatti schrieb: >>> >>>>> - what CPU frequency will the guests show? Current host >>>>> frequency? Host frequency from the moment the guest booted (i.e. >>>>> right now the guest will show 1GHz even if the host is running >>>>> at 2GHz, or the way around)? >>>> Host frequency from the moment the guest booted, since the guest does >>>> not receive frequency change notifications. >>> Is it possible (or is it planned) to pass frequency to the guest (the >>> one which is displayed in /proc/cpuinfo)? >> >> Possible, not planned AFAIK. > > Possible, right now? How? Write a paravirt notification scheme.