registering vm_exit handler in VT-x

registering vm_exit handler in VT-x

Hi all,

I would like to ask how an VM_EXIT handler is registered in VMCS - could you give some example. As far as i know VM_EXIT handler is routine, it could  be defined as C function. My question is how to register that handler function and to trap VM_EXITs into that function. Could you give some API  or snippet. 

I have one more question ... when the VM_EXIT  handler is register and the execution meets the VM_EXIT conditions what is the mechanism of invoking the VM_EXIT handler? Is the invoking of the registered VM_EXIT handler is performed by VT-x at hardware level or there is something more to be done?

Best Regards

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You can find some insights here: "Virtualization and Performance: Understanding VM Exits."


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