*/
/*
- * Iterate over the VM's list of mapped LPIs to find the one with a
- * matching interrupt ID and return a reference to the IRQ structure.
+ * Index the VM's xarray of mapped LPIs and return a reference to the IRQ
+ * structure. The caller is expected to call vgic_put_irq() later once it's
+ * finished with the IRQ.
*/
static struct vgic_irq *vgic_get_lpi(struct kvm *kvm, u32 intid)
{
raw_spin_lock_irqsave(&dist->lpi_list_lock, flags);
- list_for_each_entry(irq, &dist->lpi_list_head, lpi_list) {
- if (irq->intid != intid)
- continue;
-
- /*
- * This increases the refcount, the caller is expected to
- * call vgic_put_irq() later once it's finished with the IRQ.
- */
+ irq = xa_load(&dist->lpi_xa, intid);
+ if (irq)
vgic_get_irq_kref(irq);
- goto out_unlock;
- }
- irq = NULL;
-out_unlock:
raw_spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
return irq;