Intel VT-x VMCS doubt

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Hi 

After catching up with some reading on Intel VT-x, I could understand
the use of VMCS ( virtual machine control structure ) which allows a VMM
to specify instructions and events that cause VM entries and exits. My
current understanding is that a VMCS structure is maintained by VMM for
each guest and this structure is used by CPU during a VM entry and VM
exit. However, I am not sure if each CPU core has a separate VMCS
structure for each guest ? Also, does the number of guest VCPUs
determine the number of VMCS structures required for a guest ? Can
someone please help me figure out answers to these questions..

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