>>> On 02.03.15 at 14:44, <andrew.coop...@citrix.com> wrote: > On 02/03/15 13:15, Jan Beulich wrote: >>>>> On 02.03.15 at 13:59, <"jgr...@suse.com".non-mime.internet> wrote: >>> In order to indicate the Xen tools capability to support the virtual >>> mapped linear p2m list instead the 3 level mfn tree add feature flags >>> to the shared_info page. >> But why in the shared info page? They'd belong to start info or should >> be obtainable via XENVER_get_features. > > Furthermore in this case, the virtual linear p2m is purely a > guest->toolstack feature/ABI. > > Xen deliberately has no knowledge of PV guest p2ms of either the 3level > or linear variety. > > Is there genuinely no better interface than the hypervisor feature flags > to indicate a piece of toolstack support?
As Ian indicated in his reply, much depends on whether any other mechanism would allow the information to be retrieved early enough in the guest. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
