 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed b
| To: | John Levon <levon@xxxxxxxxxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Sat, 17 Oct 2009 15:15:35 +0100 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Sat, 17 Oct 2009 07:16:03 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <20091017135132.GA30062@xxxxxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcpPMQF4a19T7QvsQmaWTMvhvfZlOwAA0mfn |
| Thread-topic: | [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails |
| User-agent: | Microsoft-Entourage/12.20.0.090605 |
On 17/10/2009 14:51, "John Levon" <levon@xxxxxxxxxxxxxxxxx> wrote: > On Fri, Oct 16, 2009 at 02:09:20PM +0100, George Dunlap wrote: > >> domain is dying, and makes an ASSERT() to that effect. So currently, >> in debug mode, this will cause the host to crash; in non-debug mode, >> this will cause a page-fault loop. > > Isn't this a security hole then? Debug builds shouldn't be used in production environments. The page-fault loop, in the non-debug case, is preemptible, so the offending guest can only waste its own scheduling quantum. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails, John Levon |
|---|---|
| Next by Date: | Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails, John Levon |
| Previous by Thread: | Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails, John Levon |
| Next by Thread: | Re: [Xen-devel] [PATCH] Update cr3 in PAE mode when guest walk succeed but shadow walk fails, John Levon |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
