Virtualize all cpu cores on a guest with a virtual single core
Suppose that we have a guest OS that allows support only for a single core. We have an host with N=2^K cores with a virtualization solution that allows to provide all such cores to our guest. The guest will see only one core while using most of the computational resources of host's N cores.
Is it possible, with actual technologies, to have such a transparent allocation of CPU cores to guest?
Regards, Giovanni
PS Found an old answer to this question on serverfault
No. Such technology does not exist ATM. If it did, everyone would be using it.
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