We want to synchronize new vector assignments with a pending cleanup. Remove a
dying cpu from a pending cleanup mask.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/apic/vector.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -631,9 +631,23 @@ void irq_complete_move(struct irq_cfg *c
void irq_force_complete_move(int irq)
{
struct irq_cfg *cfg = irq_cfg(irq);
+ struct apic_chip_data *data;
- if (cfg)
- __irq_complete_move(cfg, cfg->vector);
+ if (!cfg)
+ return;
+
+ __irq_complete_move(cfg, cfg->vector);
+
+ /*
+ * Remove this cpu from the cleanup mask. The IPI might have been sent
+ * just before the cpu was removed from the offline mask, but has not
+ * been processed because the CPU has interrupts disabled and is on
+ * the way out.
+ */
+ raw_spin_lock(&vector_lock);
+ data = container_of(cfg, struct apic_chip_data, cfg);
+ cpumask_clear_cpu(smp_processor_id(), data->old_domain);
+ raw_spin_unlock(&vector_lock);
}
#endif
--
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