The SiFive Interrupt Cookbook, when describing the PLIC, says this:
“By definition, the PLIC cannot forward a new interrupt to a HART that has claimed an interrupt
but has not yet finished the complete step of the interrupt handler.”
Does this mean that the PLIC cannot forward a new interrupt of the same type it’s already handling (such as a UART RX interrupt) or that it cannot forward any interrupt of any type?