The HCR_VSE bit in the Hypervisor Configuration Register (HCR) of ARM architecture is a specific configuration bit used in the context of ARM virtualization.
HCR_VSE Bit
The VSE (Virtual System Error) bit in the HCR register is used to control whether a system error (SError) interrupt generated by the virtual machine is delivered to the guest operating system or trapped by the hypervisor.
- VSE = 0: Virtual SError interrupts are taken to the guest, meaning the interrupt is handled by the guest OS.
- VSE = 1: Virtual SError interrupts are trapped to the hypervisor, meaning the hypervisor takes control when such an interrupt occurs.
This bit is particularly useful for handling errors in a controlled manner in virtualized environments. If the hypervisor wants to manage SError interrupts instead of letting them be handled by the guest OS, it would set VSE to 1.
