Understanding the Jailhouse hypervisor, part 1

Posted Jan 2, 2014 17:03 UTC (Thu) by pbonzini (subscriber, #60935)
In reply to: Understanding the Jailhouse hypervisor, part 1 by ijc
Parent article: Understanding the Jailhouse hypervisor, part 1

It is the usual KVM hypervisor, running within the Linux kernel. Jailhouse lets the Linux cell do nested virtualization.

So, unlike Xen, Jailhouse does not have any knowledge of QEMU. All the knowledge of emulation is entirely within the Linux cell.

Understanding the Jailhouse hypervisor, part 1

Posted Jan 2, 2014 17:14 UTC (Thu) by ijc (subscriber, #4338) [Link] (1 responses)

But the "containing" KVM does have emulation, right? In that case what is the overall difference?

Jailhouse sounds interesting but AFAICT it is no more "Xen done right" than it is "KVM done right", in fact I would venture that in terms of functionality it is pretty much orthogonal to the other two.

Understanding the Jailhouse hypervisor, part 1

Posted Jan 2, 2014 17:24 UTC (Thu) by vsinitsyn (subscriber, #94693) [Link]

It is. The idea is to keep Jailhouse simple but compatible with KVM for those requiring more than Jailhouse provides itself.