From: "H. Peter Anvin (Intel)" <hpa@xxxxxxxxx> IRQ_MOVE_CLEANUP_VECTOR is the only one of the system IRQ vectors that is *below* FIRST_SYSTEM_VECTOR. It is a slow path, so just push it into common_interrupt() just before the spurious interrupt handling. Signed-off-by: H. Peter Anvin (Intel) <hpa@xxxxxxxxx> Tested-by: Shan Kang <shan.kang@xxxxxxxxx> Signed-off-by: Xin Li <xin3.li@xxxxxxxxx> --- arch/x86/kernel/irq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 766ffe3ba313..7e125fff45ab 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -248,6 +248,10 @@ DEFINE_IDTENTRY_IRQ(common_interrupt) desc = __this_cpu_read(vector_irq[vector]); if (likely(!IS_ERR_OR_NULL(desc))) { handle_irq(desc, regs); +#ifdef CONFIG_SMP + } else if (vector == IRQ_MOVE_CLEANUP_VECTOR) { + sysvec_irq_move_cleanup(regs); +#endif } else { ack_APIC_irq(); -- 2.34.1