From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rusty Russell Subject: Re: Paravirt KVM capabilities Date: Wed, 10 Jan 2007 21:46:25 +1100 Message-ID: <1168425985.19646.205.camel@localhost.localdomain> References: <20070109141916.GA13276@vlad.carfax.org.uk> <45A3A642.1030604@qumranet.com> <1168384852.19646.161.camel@localhost.localdomain> <20070110094750.GA934@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Return-path: To: Ingo Molnar In-Reply-To: <20070110094750.GA934-X9Un+BFzKDI@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 On Wed, 2007-01-10 at 10:47 +0100, Ingo Molnar wrote: > * Rusty Russell wrote: > regarding ABI: agreed that it's experimental right now and should stay > so for some time, but i dont see a reason why the hypercall API that > i've posted in the past few days couldnt be evolved in the way Linux > syscalls evolve, by only adding to them. That doesnt really impact the > flexibility of the virtualization subsystem. We could also possibly > phase out older hypercalls, because the number of "applications" relying > on it will be very low. I suggest you continue adding hypercalls, and see where you end up. It will be very interesting, particularly when you get to the paravirt_ops lazy_mode hooks. However, I believe it is worthwhile to have a mini hypervisor which totals less than 5000 lines, including userspace utilities. I don't believe it will change the world, but maybe some of the ideas will be incorporated in "big serious" hypervisors. But meanwhile, it's fun! Cheers! Rusty. ------------------------------------------------------------------------- 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