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Hyperthreaded CPU Scheduling via Hyper-V

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I searched forums and documents (and books) all over for this answer pertaining to Hyper-V.

When a guest VM is assigned 2 virtual CPUs with 100% reservation on a Hyper-V host with a processor featuring hyper-threading, does the guest VM receive guaranteed access to twophysical cores or two logical cores?  For a thought experiment, on a single socket 2-core processor with hyper threading (4 logical cores), from my understanding Hyper-V takes physical core 0 by default leaving a single physical core for VMs.  What would be the result of configuring a VM with 2 virtual CPUs on this host with 100% reservation?  Would you be allowed to?  Would the vCPU scheduling be across two logical processors or would the VM fail to start because it requires two physical cores?


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