From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Egger Subject: Re: RFC: Nested VMX patch series 00 Date: Wed, 1 Jun 2011 12:34:33 +0200 Message-ID: <4DE615B9.2090609@amd.com> References: <1A42CE6F5F474C41B63392A5F80372B2561480B3@shsmsx501.ccr.corp.intel.com> <4DE60CDE.5080704@amd.com> <20110601101559.GF5098@whitby.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110601101559.GF5098@whitby.uk.xensource.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: Tim Deegan Cc: "xen-devel@lists.xensource.com" , "Dong, Eddie" List-Id: xen-devel@lists.xenproject.org On 06/01/11 12:15, Tim Deegan wrote: > At 11:56 +0200 on 01 Jun (1306929406), Christoph Egger wrote: >> On 06/01/11 06:11, Dong, Eddie wrote: >>> Keir/Tim: >>> Here is the nested VMX support series for comments. >>> The current solution works with host shadow page table. The virtual EPT >>> support will come soon. >> >> I am surprised that shadow-on-shadow works w/o touching anything in >> xen/arch/x86/mm/* > > What do you think should break? One major thing was that we didn't > properly report invalid PTE bits, but that's been fixed. I thought some code to switch forth and back between two shadow page tables needs to be added at least (one to run l1 guest and one to run l2 guest). Christoph -- ---to satisfy European Law for business letters: Advanced Micro Devices GmbH Einsteinring 24, 85689 Dornach b. Muenchen Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632