From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: Tuning guide, -cpu host crashes hosted VM Date: Thu, 17 Dec 2009 10:46:31 +0200 Message-ID: <4B29EFE7.4050103@redhat.com> References: <99114AD9-FB8B-439F-B431-FCDDCF0AB32A@trutechlaser.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Steven Ball Return-path: Received: from mx1.redhat.com ([209.132.183.28]:23972 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753898AbZLQIqp (ORCPT ); Thu, 17 Dec 2009 03:46:45 -0500 In-Reply-To: <99114AD9-FB8B-439F-B431-FCDDCF0AB32A@trutechlaser.com> Sender: kvm-owner@vger.kernel.org List-ID: On 12/16/2009 12:33 AM, Steven Ball wrote: > Howdy all, > > I am attempting to evaluate a few different virtualization platforms. I've been going about this by installing a really basic XP host, and running some benchmarks. I realize these are synthetic benchmarks, but it at least allows me to see how the virtualization platforms differ. > > I attempted to do some tuning with KVM as per the tuning guide, using -cpu host, and as soon as my benchmarking program under XP uses a sse instruction, I get a blue screen crash and reboot. > Any idea what the instruction is? You can set Windows to collect a crash dump, then use windbg to examine the dump and it will point out the offending instruction. Alternatively, post a pointer to the application and someone may reproduce it some day. -- error compiling committee.c: too many arguments to function