[U-Boot] smp_kick_all_cpus() function's role

Hi, Marc: I am studying ARMv8's u-boot code with FVP model. In do_nonsec_virt_switch() function in bootm.c : It will call smp_kick_all_cpus() function : It seems it would set GICD_SGIR[24] = 1, forward the interrupt to all CPU interfaces except tha tof the processor that requested the interrupt.

So, who generated the interrupt(which would be forwarded to other cores)?

Best wishes,