From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cornelius Wefelscheid Subject: CPU Limitations Date: Mon, 27 Apr 2009 16:49:30 +0200 Message-ID: <1240843770.7092.12.camel@cornelius> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail.cs.tu-berlin.de ([130.149.17.13]:56618 "EHLO mail.cs.tu-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753070AbZD0O4K (ORCPT ); Mon, 27 Apr 2009 10:56:10 -0400 Received: from localhost (localhost [127.0.0.1]) by localhost-12225.cs.tu-berlin.de (Postfix) with ESMTP id 72CC32A38A for ; Mon, 27 Apr 2009 16:49:32 +0200 (MEST) Received: from mailhost.cs.tu-berlin.de ([127.0.0.1]) by localhost (mail.cs.tu-berlin.de [127.0.0.1]) (amavisd-new, port 12224) with ESMTP id J2DTPIOyrXpX 21873-04 for ; Mon, 27 Apr 2009 16:49:31 +0200 (MEST) 16073 Received: from [130.149.168.186] (cornelius.bv.TU-Berlin.DE [130.149.168.186]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: corwefel) by mailhost.cs.tu-berlin.de (Postfix) with ESMTPSA for ; Mon, 27 Apr 2009 16:49:30 +0200 (MEST) Sender: kvm-owner@vger.kernel.org List-ID: Hi, i have the following problem: I got a amd opteron server with 32 (4*8) cpus. Since kvm is only able to created a virtual machine with 16 cpus, i changed KVM_MAX_VCPUS, MAX_VCPUS and MAX_CPUS as suggested in http://www.linux-kvm.org/wiki/images/b/be/KvmForum2008$kdf2008_6.pdf after compiling everything is shows the right number of maximum cpus in the virt-manager, but it is still not working. If i start for example my virtual machine with kvm -m 4000 -smp 30 disk0.img i get a segmentation fault. in the logfile it looks like that: [ 4440.424512] __ratelimit: 18 callbacks suppressed [ 4440.424523] kvm[7054]: segfault at 1ae5cf6b0 ip 00000000004092ba sp 00007fff3dbb8dc0 error 4 in kvm[400000+1e1000] Any idee what is missing or what is wrong? cheers cornelius