From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1850 invoked by alias); 30 Mar 2006 14:44:11 -0000 Received: (qmail 1842 invoked by uid 22791); 30 Mar 2006 14:44:10 -0000 X-Spam-Status: No, hits=-2.5 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 30 Mar 2006 14:44:10 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k2UEi86H014077; Thu, 30 Mar 2006 09:44:08 -0500 Received: from pobox.corp.redhat.com (pobox.corp.redhat.com [172.16.52.156]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.11.6) with ESMTP id k2UEi8Mn017070; Thu, 30 Mar 2006 09:44:08 -0500 Received: from [172.16.59.118] (dhcp59-118.rdu.redhat.com [172.16.59.118]) by pobox.corp.redhat.com (8.12.8/8.12.8) with ESMTP id k2UEi7M6009340; Thu, 30 Mar 2006 09:44:07 -0500 Message-ID: <442BEEB7.8070505@redhat.com> Date: Thu, 30 Mar 2006 14:44:00 -0000 From: William Cohen User-Agent: Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Stone, Joshua I" CC: Roland McGrath , SystemTap Subject: Re: SystemTap vs. FC5 Xen kernels (was: 03-23-2006 Meeting minutes) References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q1/txt/msg00897.txt.bz2 Stone, Joshua I wrote: > I found two differences in the config files that will prevent SystemTap > from running on the Xen kernels. In 2054_FC5 and 2054_FC5kdump, the > config files have: > > CONFIG_KPROBES=y > ... > CONFIG_DEBUG_INFO=y > > Whereas in 2054_FC5xen0 and 2054_xenU, the config files have: > > # CONFIG_KPROBES is not set > > ... with no mention of CONFIG_DEBUG_INFO. This might explain the > missing dwarf info in the kernel-debuginfo package. And of course for > SystemTap we need CONFIG_KPROBES=y. > > > Josh Sometimes the options are turned off on purpose. Do the Xen kernels build with "CONFIG_KPROBES=y"? If kernels are built, do the resulting kernels actually have kprobe support? It use to be that xen kernels copy and pasted code from other arches. What additional patches are needed to bring the kprobe support in the xen kernel in line with the various architectures? -Will