From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: 2 CPU Conformance Issue in KVM/x86 Date: Tue, 10 Mar 2015 11:44:57 +0100 Message-ID: <54FECB29.8090800@redhat.com> References: <54F58471.7020906@redhat.com> <54FDD39C.9060908@gmail.com> <54FDF574.1020102@redhat.com> <54FDF969.7080801@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: Avi Kivity , Nadav Amit , KVM list , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= Return-path: Received: from mx1.redhat.com ([209.132.183.28]:51735 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751057AbbCJKpN (ORCPT ); Tue, 10 Mar 2015 06:45:13 -0400 In-Reply-To: <54FDF969.7080801@gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: On 09/03/2015 20:50, Avi Kivity wrote: >>> Is the issue emulating a higher MAXPHYADDR on the guest than is >>> available on the host? I don't think there's any need to support that. >> No, indeed. The only problem is that the failure mode is quite horrible >> (you get a triple fault, possibly while the guest is running). > > Can't qemu simply check for it? Yes. But right now it doesn't even try to do something sensible with MAXPHYADDR. :/ Paolo