From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: MSRs load/store Date: Mon, 07 Dec 2009 17:37:49 +0200 Message-ID: <4B1D214D.50107@redhat.com> References: <6d8082040912070707g3d809d2fy9319d01609133083@mail.gmail.com> <4B1D1B3D.6060305@redhat.com> <6d8082040912070732k4a71140dodff55e4030f6d6c7@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Jiaqing Du Return-path: Received: from mx1.redhat.com ([209.132.183.28]:2596 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935208AbZLGPhp (ORCPT ); Mon, 7 Dec 2009 10:37:45 -0500 In-Reply-To: <6d8082040912070732k4a71140dodff55e4030f6d6c7@mail.gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On 12/07/2009 05:32 PM, Jiaqing Du wrote: > Hi Avi, > > I did not get your point. > > But if we want to multiplex some of the MSRs across the VMM and the > guest(s), it would be handy if the hardware provides this feature: > save host's version and load guest's version. Of course, we can do > this manually. I'm just wondering why this feature is missing. > Well, you'll have to ask the designers of the feature. If it can be done manually, why add a feature in hardware? -- error compiling committee.c: too many arguments to function