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Virtualization.framework appears to provide Virtio disk, network, etc. I wonder how Apple did it: I doubt they could copy GPL code from qemu. Maybe they copied something from one of the *BSD implementations? If they have implemented it from scratch, I wonder how buggy it is? Anyone has any information on this?

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I think Virtualization.framework lays on top of Hypervisor.framework, which Apple has included since Yosemite (released in 2014). So while I can't refute your suspicions, they would have had the time to implement it from scratch.

I’ve been trying to understand the difference. Even have an open unanswered question on stack overflow.

What’s the diff between Hypervisor and virtualisation frameworks? Docs are ambiguous.

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