45 	/* Allocate a new target vector */  in msi_set_affinity()
52 	 * to a different destination CPU and a different vector has to be  in msi_set_affinity()
59 	 * - The new vector is the same as the old vector  in msi_set_affinity()
60 	 * - The old vector is MANAGED_IRQ_SHUTDOWN_VECTOR (interrupt starts up)  in msi_set_affinity()
65 	    cfg->vector == old_cfg.vector ||  in msi_set_affinity()
66 	    old_cfg.vector == MANAGED_IRQ_SHUTDOWN_VECTOR ||  in msi_set_affinity()
83 	 * Redirect the interrupt to the new vector on the current CPU  in msi_set_affinity()
84 	 * first. This might cause a spurious interrupt on this vector if  in msi_set_affinity()
88 	 * If the vector is in use then the installed device handler will  in msi_set_affinity()
91 	 * anyway. If the vector is unused, then it is marked so it won't  in msi_set_affinity()
92 	 * trigger the 'No irq handler for vector' warning in  in msi_set_affinity()
95 	 * This requires to hold vector lock to prevent concurrent updates to  in msi_set_affinity()
96 	 * the affected vector.  in msi_set_affinity()
101 	 * Mark the new target vector on the local CPU if it is currently  in msi_set_affinity()
108 	 * vector is cleaned up when the CPU comes online again.  in msi_set_affinity()
110 	if (IS_ERR_OR_NULL(this_cpu_read(vector_irq[cfg->vector])))  in msi_set_affinity()
111 		this_cpu_write(vector_irq[cfg->vector], VECTOR_RETRIGGERED);  in msi_set_affinity()
113 	/* Redirect it to the new vector on the local CPU temporarily */  in msi_set_affinity()
114 	old_cfg.vector = cfg->vector;  in msi_set_affinity()
122 	 * vector/CPU.  in msi_set_affinity()
124 	 * Drop vector lock before testing whether the temporary assignment  in msi_set_affinity()
126 	 * because the retrigger function acquires vector lock again.  in msi_set_affinity()
133 	 * of vector lock as the irq_desc::lock of this interrupt is still  in msi_set_affinity()
135 	 * underlying vector store. It's just checking the local APIC's  in msi_set_affinity()
138 	if (lapic_vector_set_in_irr(cfg->vector))  in msi_set_affinity()