cursp 646 arch/powerpc/kernel/irq.c void *cursp, *irqsp, *sirqsp; cursp 649 arch/powerpc/kernel/irq.c cursp = (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1)); cursp 656 arch/powerpc/kernel/irq.c if (unlikely(cursp == irqsp || cursp == sirqsp)) {