On Tue, Aug 27, 2013, Jan Kiszka wrote about "Re: nested migration issues": > > Can anybody tell me whether kvm supports this kind of nested migration > > or anybody is working on the relating field? > > No, KVM does not support migration while nested VMX (or SVM) is enabled. > We lack userspace interfaces to export/import the required state, and > that mostly because we do not really know yet what state needs to be > made available. Specifically nVMX is still under development. Migration > support will officially follow once we feel we reached a mature state > with nesting support. Also check out https://bugzilla.kernel.org/show_bug.cgi?id=53851 for some earlier ideas about the issue of migrating L1 complete with its L2s. > That said, if you want to play with adding such an interface yourself, > no one will stop you. It may serve as a reference for us what is > required, but you should not expect it to be merged soon. > > BTW, not only migration is broken so far. Even reset does not work while > VMX is enabled. For the same reason: userspace cannot load a VCPU state > that resets all VMX states properly. > > Jan > > -- > Siemens AG, Corporate Technology, CT RTC ITP SES-DE > Corporate Competence Center Embedded Linux > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Nadav Har'El | Tuesday, Aug 27 2013, 21 Elul 5773 nyh@xxxxxxxxxxxxxxxxxxx |----------------------------------------- Phone +972-523-790466, ICQ 13349191 |Committee: A group of people that keeps http://nadav.harel.org.il |minutes and wastes hours. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
