This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-devel] Re: [PATCH v2] Enable SMEP CPU feature support for XEN hyper

To: <xin.li@xxxxxxxxx>,<keir@xxxxxxx>
Subject: [Xen-devel] Re: [PATCH v2] Enable SMEP CPU feature support for XEN hypervisor
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
Date: Sun, 05 Jun 2011 08:36:29 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Sun, 05 Jun 2011 00:37:26 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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
>>> Keir Fraser <keir@xxxxxxx> 06/04/11 5:32 PM >>>
>I mean, I know we may as well just hide the feature from PV 64b guests
>totally. That's obvious. Let's stop talking about PV 64b guests already! The
>question is: what to do about PV 32b guests?

Quite obviously we ought to allow 32-bit pv guests to control this for
themselves (and hence see the feature).

Besides that, assuming Xin verified it's working, your latest patch
looks great to me.

Xen-devel mailing list