Messages in this thread | | | Date | Thu, 08 Mar 2007 16:44:17 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: hardwired VMI crap |
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Thomas Gleixner wrote: > Once you are there, you are near the point where you created a virtual > architecture, which could run on any real architecture which gets > supported by a hypervisor backend. > > I'd love that :) >
Sure. But not even hypervisors. Once we sort out pv_ops's SMP support, it will be this >< close to covering everything in the subarch interface. So we can drop all that goo in favour of paravirt_ops, and make a single kernel that will boot on everything from voyager to numa-q! How's that for world peace?
> I know it is tricky to combine this with the upcoming hardware > virtualization support. But it's at least a worthwhile thought > experiment. >
Well, in many ways that's a step backwards. The upside is that its easier to get away with simply emulating the some particular piece hardware, but it does lose a lot of opportunities for interesting flexibility and optimisations.
But I anticipate we'll get a xen-hvm pv_ops backend, for running under Xen with a virtualizing cpu. It will probably look a lot like kvm's pv_ops backend.
J
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