From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Holt Subject: Re: [patch 1/3] mmu_notifier: Core code Date: Thu, 31 Jan 2008 22:15:13 -0600 Message-ID: <20080201041512.GF26420@sgi.com> References: <20080131045750.855008281@sgi.com> <20080131045812.553249048@sgi.com> <20080201035249.GE26420@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Andrea Arcangeli , Peter Zijlstra , linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, steiner-sJ/iWh9BUns@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Avi Kivity , kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org, Robin Holt To: Christoph Lameter Return-path: Content-Disposition: inline In-Reply-To: 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 On Thu, Jan 31, 2008 at 07:58:40PM -0800, Christoph Lameter wrote: > On Thu, 31 Jan 2008, Robin Holt wrote: > > > > + void (*invalidate_range_end)(struct mmu_notifier *mn, > > > + struct mm_struct *mm, int atomic); > > > > I think we need to pass in the same start-end here as well. Without it, > > the first invalidate_range would have to block faulting for all addresses > > and would need to remain blocked until the last invalidate_range has > > completed. While this would work, (and will probably be how we implement > > it for the short term), it is far from ideal. > > Ok. Andrea wanted the same because then he can void the begin callouts. > > The problem is that you would have to track the start-end addres right? Yep. We will probably no do that in the next week, but I would expect we have that working before we submit xpmem again. We will probably just chain them up in a regular linked list. Thanks, Robin ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/