irq_stack_backing_store 26 arch/x86/kernel/irq_64.c DEFINE_PER_CPU_PAGE_ALIGNED(struct irq_stack, irq_stack_backing_store) __visible; irq_stack_backing_store 27 arch/x86/kernel/irq_64.c DECLARE_INIT_PER_CPU(irq_stack_backing_store); irq_stack_backing_store 35 arch/x86/kernel/irq_64.c char *stack = (char *)per_cpu_ptr(&irq_stack_backing_store, cpu); irq_stack_backing_store 60 arch/x86/kernel/irq_64.c void *va = per_cpu_ptr(&irq_stack_backing_store, cpu);