From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992783AbXCCARd (ORCPT ); Fri, 2 Mar 2007 19:17:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992789AbXCCARd (ORCPT ); Fri, 2 Mar 2007 19:17:33 -0500 Received: from gw.goop.org ([64.81.55.164]:40189 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992783AbXCCARd (ORCPT ); Fri, 2 Mar 2007 19:17:33 -0500 Message-ID: <45E8BE79.40200@goop.org> Date: Fri, 02 Mar 2007 16:16:57 -0800 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.9 (X11/20070212) MIME-Version: 1.0 To: tim.c.chen@linux.intel.com CC: linux-kernel@vger.kernel.org, Virtualization Mailing List Subject: Re: system call time increase when turning on CONFIG_PARAVIRT References: <1172866274.4898.14.camel@localhost.localdomain> <45E89CFB.4090905@goop.org> <1172877111.8383.4.camel@localhost.localdomain> In-Reply-To: <1172877111.8383.4.camel@localhost.localdomain> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Tim Chen wrote: > I also hope that the performance can be recovered as this option could > enabled in distributions' kernels in future. Yes, the intent is that running a CONFIG_PARAVIRT kernel on native hardware will have negligible performance hit compared to running a non-paravirt kernel. J