From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763269AbXGRTZb (ORCPT ); Wed, 18 Jul 2007 15:25:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753334AbXGRTZW (ORCPT ); Wed, 18 Jul 2007 15:25:22 -0400 Received: from wx-out-0506.google.com ([66.249.82.239]:41500 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754174AbXGRTZV (ORCPT ); Wed, 18 Jul 2007 15:25:21 -0400 Message-ID: <469E691D.3050305@codemonkey.ws> Date: Wed, 18 Jul 2007 14:25:17 -0500 From: Anthony Liguori User-Agent: Thunderbird 1.5.0.12 (X11/20070604) MIME-Version: 1.0 To: Jeff Dike CC: Avi Kivity , KVM devel , LKML Subject: Re: [kvm-devel] [PATCH 3/3] KVM - add hypercall nr to kvm_run References: <20070716192447.GA16253@c2.user-mode-linux.org> <469C7C8D.1020600@qumranet.com> <469CCF17.3020709@codemonkey.ws> <20070717160710.GC7965@c2.user-mode-linux.org> <469E3FA2.7060408@codemonkey.ws> <20070718174104.GA8655@c2.user-mode-linux.org> In-Reply-To: <20070718174104.GA8655@c2.user-mode-linux.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jeff Dike wrote: > On Wed, Jul 18, 2007 at 11:28:18AM -0500, Anthony Liguori wrote: > >> Within the kernel right (VMCALL is only usable in ring 1). >> > > Yup. > > >> Is it >> terribly important to be able to pass through the syscall arguments in >> registers verses packing them in a data structure and passing a pointer >> to that structure? >> > > An arg block would be fine, too. > Okay, then you should be pretty well insulated against the changing hypercall stuff since you only need one hypercall NR and can use a one argument hypercall. Regards, Anthony Liguori > Jeff > >