From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: State of current pv_ops backend for KVM? Date: Tue, 29 May 2007 14:47:12 +0300 Message-ID: <465C12C0.9030906@qumranet.com> References: <465B87CE.6030801@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel To: Anthony Liguori Return-path: In-Reply-To: <465B87CE.6030801-rdkfGonbjUSkNkDKm+mE6A@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 Anthony Liguori wrote: > Howdy, > > Does anyone know what the state of a pv_ops backend for KVM is? I > know Ingo has an implementation that implements CR3 caching but I > don't see any branches in Avi's git tree. > > Perhaps we should try for a simple pv_ops backend for 2.6.23 seeing as > how the host infrastructure is there? I'd be willing to do some leg > work here... I think we should aim for a full direct paging implementation, where the cr3 cache is just the cherry on top that makes context switches proceed at native speed. Jun has a paper on it for OLS and I hope patches too. A minor drawback with direct paging is that you are more or less forced to use pae on the guest, but I think that's acceptable. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/