From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH] Fixed KVM problems with old DOS programs. Compatibility can be forced by module parameter. Date: Wed, 4 Nov 2015 23:04:36 +0100 Message-ID: <563A80F4.6090204@redhat.com> References: <563A5D7D.4080201@wiesinger.com> <563A7827.8030506@redhat.com> <563A79B8.3020900@wiesinger.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit To: Gerhard Wiesinger , kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:58227 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965397AbbKDWEo (ORCPT ); Wed, 4 Nov 2015 17:04:44 -0500 In-Reply-To: <563A79B8.3020900@wiesinger.com> Sender: kvm-owner@vger.kernel.org List-ID: On 04/11/2015 22:33, Gerhard Wiesinger wrote: >>> >> What is the problem you are seeing? KVM can emulate task switches; the >> intercept is set here because of a processor erratum that can mess them >> up even though, in theory, AMD supports task switching from guest mode. > > See old thread: > https://lists.nongnu.org/archive/html/qemu-devel/2012-04/msg01506.html Can you obtain the traces you were asked for at the time? Paolo