1 files changed, 13 insertions, 0 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ff1759a1128e..42cdc78427a2 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2414,6 +2414,7 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
         me = smp_processor_id();
         for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS; vector++) {
                 unsigned int irq;
+                unsigned int irr;
                 struct irq_desc *desc;
                 struct irq_cfg *cfg;
                 irq = __get_cpu_var(vector_irq)[vector];
@@ -2433,6 +2434,18 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
                 if (vector == cfg->vector && cpumask_test_cpu(me, cfg->domain))
                         goto unlock;
 
+                irr = apic_read(APIC_IRR + (vector / 32 * 0x10));
+                /*
+                 * Check if the vector that needs to be cleanedup is
+                 * registered at the cpu's IRR. If so, then this is not
+                 * the best time to clean it up. Lets clean it up in the
+                 * next attempt by sending another IRQ_MOVE_CLEANUP_VECTOR
+                 * to myself.
+                 */
+                if (irr  & (1 << (vector % 32))) {
+                        apic->send_IPI_self(IRQ_MOVE_CLEANUP_VECTOR);
+                        goto unlock;
+                }
                 __get_cpu_var(vector_irq)[vector] = -1;
                 cfg->move_cleanup_count--;
 unlock: