Re: [libvirt] [PATCH V2] Expose all CPU features in host definition

On Mon, Jul 15, 2013 at 01:45:56PM -0600, Don Dugger wrote: [snip] We've been going back & forth a while now, and I don't think we're ever going to agree on this matter. To move this forward, I'm prepared to accept an API addition that lets apps get the full list of CPU feature flags, provided that there is no change to the existing default behaviour of our APIs. eg it should be an opt-in decision

IIUC, in essence you want a way to take the host CPU description (as generated in the XML for virConnectGetCapabilties), and expand this see the full set of features that are able to be presented to the guest. I think this could probably be done by adding a flag to the existing virConnectBaselineCPU API. eg something like capsxml = virConnectGetCapabilties() cpuxml = ...extract the <cpu> bit of capsxml... newxml = virConnectBaselineCPU(conn, &cpuxml, 1, VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES) Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|