Ivthandleinterrupt

// In main.c int main(void) while (1) if (timer_flag) timer_flag = false; // Do non-critical work here

: The IOMMU acts as a gatekeeper, ensuring that peripheral devices (like GPUs, network cards, or SSDs) can only access specific memory regions assigned to them. ivthandleinterrupt

Does your IVT handler re-enable interrupts? If so, a higher-priority interrupt can preempt it. This requires a reentrant handler design. // In main

// Register an interrupt handler for interrupt 0x10 Status = IvtHandleInterrupt->RegisterInterruptHandler(IvtHandleInterrupt, 0x10, MyInterruptHandler); if (EFI_ERROR(Status)) return Status; ensuring that peripheral devices (like GPUs