From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: Setting nx bit in virtual CPU Date: Mon, 05 Apr 2010 11:27:47 +0300 Message-ID: <4BB99F03.3020208@redhat.com> References: <4BB126AC.8040401@huskydog.org.uk> <4BB45CA2.5040304@redhat.com> <4BB65C9D.3070505@huskydog.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Richard Simpson Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52442 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751145Ab0DEI1x (ORCPT ); Mon, 5 Apr 2010 04:27:53 -0400 In-Reply-To: <4BB65C9D.3070505@huskydog.org.uk> Sender: kvm-owner@vger.kernel.org List-ID: On 04/03/2010 12:07 AM, Richard Simpson wrote: > Nope, both Kernels are 64 bit. > > uname -a Host: Linux gordon 2.6.27-gentoo-r8 #5 Sat Mar 14 18:01:59 GMT > 2009 x86_64 AMD Athlon(tm) 64 Processor 3200+ AuthenticAMD GNU/Linux > > uname -a Guest: Linux andrew 2.6.28-hardened-r9 #4 Mon Jan 18 22:39:31 > GMT 2010 x86_64 AMD Athlon(tm) 64 Processor 3200+ AuthenticAMD GNU/Linux > > As you can see, both kernels are a little old, and I have been wondering > if that might be part of the problem. The Guest one is old because that > is the latest stable hardened version in Gentoo. The host one is old > because of: > 2.6.27 should be plenty fine for nx. Really the important bit is that the host kernel has nx enabled. Can you check if that is so? -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.