From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:47676) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QjAmJ-0000Xs-I0 for qemu-devel@nongnu.org; Tue, 19 Jul 2011 09:56:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QjAmH-00070u-96 for qemu-devel@nongnu.org; Tue, 19 Jul 2011 09:56:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41637) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QjAmG-00070j-Gk for qemu-devel@nongnu.org; Tue, 19 Jul 2011 09:56:01 -0400 Message-ID: <4E258CE9.4080203@redhat.com> Date: Tue, 19 Jul 2011 16:55:53 +0300 From: Avi Kivity MIME-Version: 1.0 References: <1310047993-7649-1-git-send-email-joerg.roedel@amd.com> <1310047993-7649-3-git-send-email-joerg.roedel@amd.com> <20110719114658.GA28500@amt.cnet> <4E257695.4010906@redhat.com> <20110719133003.GG24072@8bytes.org> <4E258C7B.6040005@redhat.com> In-Reply-To: <4E258C7B.6040005@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 2/3] qemu-x86: Add tsc_freq option to -cpu List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Joerg Roedel Cc: Joerg Roedel , Marcelo Tosatti , qemu-devel@nongnu.org, kvm@vger.kernel.org On 07/19/2011 04:54 PM, Avi Kivity wrote: > On 07/19/2011 04:30 PM, Joerg Roedel wrote: >> > >> > (although we've been talking about starting a naked qemu and >> pushing all >> > of the configuration from the source). >> >> Hmm, I planned to do the VMSTATE thing in a follow-on patch-set. The >> plan is to read the VCPU tsc_freq at guest start time on !tsc-scale >> hosts and migrate it over so that the destination host can set the >> tsc-freq if it supports tsc-scaling. > > This can be done by a management tool if desired. > Although, if we do this unconditionally (that is, also for tsc-scale hosts) then we get stable tsc even without supplying a tsc frequency argument... need to think about this. -- error compiling committee.c: too many arguments to function