From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933830AbXCFBwH (ORCPT ); Mon, 5 Mar 2007 20:52:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933832AbXCFBwH (ORCPT ); Mon, 5 Mar 2007 20:52:07 -0500 Received: from smtp-outbound-1.vmware.com ([65.113.40.141]:48303 "EHLO smtp-outbound-1.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933830AbXCFBwF (ORCPT ); Mon, 5 Mar 2007 20:52:05 -0500 Message-ID: <45ECC91D.1020809@vmware.com> Date: Mon, 05 Mar 2007 17:51:25 -0800 From: Zachary Amsden User-Agent: Thunderbird 1.5.0.10 (X11/20070221) MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Rusty Russell , virtualization , Andrew Morton , Ingo Molnar , Roland McGrath , linux-kernel@vger.kernel.org, Jan Beulich Subject: Re: [patch] paravirt: VDSO page is essential References: <20070305120631.GA14105@elte.hu> <1173101297.26165.39.camel@localhost.localdomain> <1173142644.4644.6.camel@localhost.localdomain> <45ECBDDC.8080708@vmware.com> <45ECC076.9050209@goop.org> In-Reply-To: <45ECC076.9050209@goop.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 Jeremy Fitzhardinge wrote: > I think Jan's approach is better if it works (since there's no > compromise), but this is better if you want to get something working in > the near term. > Is Jan dynamically relinking the vdso at runtime? Because that is what we will need. Adding support for COMPAT_VDSO creates a major performance problem for us. We need a way to force the VDSO to be enabled with a boot parameter. Zach