arm_64 exception vector and el2 stack

Hi

Where does Genode/base-hw write the exception vector to the address that hypervisor_exception_vector reports it?

It doesn't work. If I leave out the vbar setting I get exceptions from uboot if I do something stupid. If not , nothing. But of course, I might be wrong it is just that I would expect exceptions.

For example: When I by mistake put NR_OF_CPUS inconsistently., I get nothing if vbar set, if not, trigger assert. Not sure how this relates (seems odd ) but I think that it is a hint.

The el2_stack seems like a very high address.

Thanks,

Michael