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How to do the ARM state change between 64-bit and 32-bit Guest OS on Hypervsor?

Bharat

Hello

If two OS running on 64-bit Hypervisor. One OS is 64-bit and other is 32-bit OS.

How the Hypervisor run both OS? What is programming  sequence( respect to ARM registers) when Hypervisor schedule/run one after other OS?

 

I only knows that RMR_ELx use for 32-bit to 64-bit transition but How it will use in Hypervisor based environment?

 

I have same question with respect to secure world.

If two OS running in secure world say one is TEE(64-bit) and RTOS(32-bit). How the monitor(running in EL3)  handle this?

 

Thanks

Bharat

 

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