On Fri, 2015-12-11 at 16:44 +0000, Stefano Stabellini wrote: > > It is not possible to do this at runtime. I think we should do this at > compile time because in any case it is not supported to run a QEMU built > for a given Xen version on a different Xen version.
I am currently working pretty hard to make this possible in the future, it would be a shame to add another reason it wasn't possible at this stage. I proposed (in <1445442435.9563.184.ca...@citrix.com>) that as well as the various stable libraries extracted from libxenctrl we will probably also want to have a libxendevicemodel.so at some point, to provide a stable way to interface with all the stuff which being a DM involves. Maybe that library could contain a way to get this information? (In which case it could be hardcoded at compile time now and I'll see what I can do when I get to producing the library). For the original issue here, could the flag be exposed as a XEN_SYSCTL_PHYSCAP_???? Ian.
