From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Egger Subject: Re: [PATCH] nestedsvm: fix paging mode Date: Mon, 1 Oct 2012 15:50:30 +0200 Message-ID: <50699FA6.6070805@amd.com> References: <505C733B.50205@amd.com> <20120927145356.GG8831@ocelot.phlegethon.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120927145356.GG8831@ocelot.phlegethon.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Tim Deegan Cc: "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org On 09/27/12 16:53, Tim Deegan wrote: > At 16:01 +0200 on 21 Sep (1348243291), Christoph Egger wrote: >> >> On VMRUN and VMEXIT emulation update the paging mode >> for Shadow-on-Nested. This allows Xen to walk the >> l1 hypervisors shadow page table correctly. >> Problem found with 64bit Win7 and 32bit XPMode where >> Win7 switches forth and back between long mode and >> PAE legacy pagetables. >> >> Signed-off-by: Christoph Egger > > Don't you have to do this in other cases as well? I think that > shadow-on-shadow might need it, at least. It is needed for all cases where the l1 guest does shadow paging. This includes: Shadow-on-Nested and Shadow-on-Shadow. Christoph -- ---to satisfy European Law for business letters: Advanced Micro Devices GmbH Einsteinring 24, 85689 Dornach b. Muenchen Geschaeftsfuehrer: Alberto Bozzo Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen Registergericht Muenchen, HRB Nr. 43632