From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: How to recreate MOV-SS blocking vmentry fail Date: Wed, 11 Sep 2013 16:03:08 +0300 Message-ID: <20130911130307.GD17294@redhat.com> References: <20130911125345.GB17294@redhat.com> <52306993.2030907@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Arthur Chunqi Li , kvm , Jan Kiszka To: Paolo Bonzini Return-path: Received: from mx1.redhat.com ([209.132.183.28]:48488 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753367Ab3IKNDK (ORCPT ); Wed, 11 Sep 2013 09:03:10 -0400 Content-Disposition: inline In-Reply-To: <52306993.2030907@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Sep 11, 2013 at 03:01:07PM +0200, Paolo Bonzini wrote: > Il 11/09/2013 14:53, Gleb Natapov ha scritto: > >> > I was trying to recreate MOV-SS blocking vmentry fail (Intel SDM 26.1, > >> > 5. a). Here the manual refers to Table 24-3, but later in 26.3.1.5 > >> > also describe it. I got confused how this scenario can be recreated. > >> > Do you have any ideas? > >> > > > mov $0, %ss > > vmlaunch > > Probably better to save %ss somewhere around these instructions... :) > Details, details :) It can be: mov %ss, tmp mov tmp, $ss vmlaunch -- Gleb.