From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753088AbaC0C4q (ORCPT ); Wed, 26 Mar 2014 22:56:46 -0400 Received: from mga11.intel.com ([192.55.52.93]:50818 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751869AbaC0C4o (ORCPT ); Wed, 26 Mar 2014 22:56:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,739,1389772800"; d="scan'208";a="500552554" Date: Thu, 27 Mar 2014 10:56:41 +0800 From: Fengguang Wu To: Paolo Bonzini Cc: LKML , lkp@01.org Subject: Re: [KVM] BUG: unable to handle kernel NULL pointer dereference at 00000000000002b0 Message-ID: <20140327025641.GA12099@localhost> References: <20140326144053.GC26721@localhost> <5332E94B.3050407@redhat.com> <20140326145701.GA27938@localhost> <5332F668.8080601@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5332F668.8080601@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 26, 2014 at 04:46:48PM +0100, Paolo Bonzini wrote: > Il 26/03/2014 15:57, Fengguang Wu ha scritto: > >>>> > > >>>> >git://git.kernel.org/pub/scm/virt/kvm/kvm.git queue > >>>> >commit 93c4adc7afedf9b0ec190066d45b6d67db5270da ("KVM: x86: handle missing MPX in nested virtualization") > >>> > >>> Ouch. Out of curiosity is this on Skylake prototypes, or is it also > >>> visible on some released silicon? > >Paolo, the problem shows up in a Sandybridge-EX and an Ivybridge-EX. > > What does that mean in terms of commercial names? I tested on Sandy > Bridge Xeon E5. Sorry I don't know the exact commercial names listed in http://en.wikipedia.org/wiki/Sandy_Bridge http://en.wikipedia.org/wiki/Ivy_Bridge_%28microarchitecture%29 Thanks, Fengguang