From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: XEN) vmx.c:2652:d1 Bad vmexit (reason 31) with Xen 4.0.1-rc7-pre (cs/ 23029) Date: Mon, 21 Mar 2011 07:35:25 -0400 Message-ID: <20110321113525.GC4429@dumpdata.com> References: <4D831E1A0200007800037343@vpn.id2.novell.com> <20110320203737.GC3447@dumpdata.com> <987664A83D2D224EAE907B061CE93D53019DCEE5D9@orsmsx505.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <987664A83D2D224EAE907B061CE93D53019DCEE5D9@orsmsx505.amr.corp.intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Kay, Allen M" Cc: "xen-devel@lists.xensource.com" , Keir Fraser , "Tim.Deegan@citrix.com" , Jan Beulich List-Id: xen-devel@lists.xenproject.org On Sun, Mar 20, 2011 at 03:43:07PM -0700, Kay, Allen M wrote: > Konrad, > > I believe sharept=0 is the default. If it is set to sharept=1, the code is enabled only on the systems that has compatible EPT and VT-d page table format. There is no such hardware on the market yet. > > What type of NHM SDP do you have? Is it a HEDT (High End Desktop) with a add-on graphics card? I have been using a Westmere EP system (NHM architecture generation) and have not seen this problem. I also have ready access to Ironlake SDP's I can test on if you see the same problem on Ironlake (i.e. core i5) systems. Not sure how to identify it. The motherboard does require a discrete graphic card. > > Do you see the same problem if you do iommu=0 in the grub? I tried 'iommu=off' but I think that is the same thing. Let me try 'iommu=0' just to make sure.