From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH 0/8] KVM updates for 2.6.20-rc2 Date: Thu, 28 Dec 2006 16:11:59 +0100 Message-ID: <20061228151159.GA20279@elte.hu> References: <20061228113038.GA16190@elte.hu> <4593B948.5090009@qumranet.com> <20061228133746.GC3392@elte.hu> <4593CB61.5050709@qumranet.com> <20061228135020.GA7606@elte.hu> <4593CD74.6060202@qumranet.com> <20061228140742.GA10033@elte.hu> <4593D243.1030301@qumranet.com> <20061228150104.GB16057@elte.hu> <4593DE1D.8010701@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel Return-path: To: Avi Kivity Content-Disposition: inline In-Reply-To: <4593DE1D.8010701-atKUWr5tajBWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org * Avi Kivity wrote: > >hm. Could you try to just do a vmresume nevertheless - maybe it works > >but is undocumented? > > I'd hate to do that. There are at least three implementations of VT > (PD, Core, Core2) and maybe more when steppings and microcode updates > are considered. Not to mention having kvm fail when a new cpu is > introduced is not a pleasant scenario. lets check whether it's even possible ... Then we could ask Intel to clarify their position on this. I can see no real reason why a vmclear should really make it impossible to re-use the already loaded context data /on the same CPU/. And that is the important case. When we migrate to another CPU we have to do a VMLAUNCH anyway, upon the first execution of that context. Ingo ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV