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by wang_li 859 days ago
It may be implemented in the system firmware, but it's still a hypervisor performing context switches and enforcing access to pci devices. Even if you've never looked at the processor architecture manuals you can tell this is what's happening when you can assign 0.1 cores to an LPAR. Different implementation details but the same functionality as SPARC LDOMs and Intel's vt-x & vt-d.