Index: sys/arm64/arm64/gic_v3_var.h
===================================================================
--- sys/arm64/arm64/gic_v3_var.h
+++ sys/arm64/arm64/gic_v3_var.h
@@ -43,6 +43,7 @@
 struct redist_pcpu {
 	struct resource		res;
 	vm_offset_t		pend_base;
+	u_int			lpi_enabled:1;
 };
 
 struct gic_redists {
Index: sys/arm64/arm64/gicv3_its.c
===================================================================
--- sys/arm64/arm64/gicv3_its.c
+++ sys/arm64/arm64/gicv3_its.c
@@ -670,11 +670,14 @@
 	if ((gic_r_read_4(gicv3, GICR_TYPER) & GICR_TYPER_PLPIS) == 0)
 		return (ENXIO);
 
-	its_init_cpu_lpi(dev, sc);
+	rpcpu = gicv3_get_redist(dev);
+	if (!rpcpu->lpi_enabled) {
+		its_init_cpu_lpi(dev, sc);
+		rpcpu->lpi_enabled = 1;
+	}
 
 	if ((gic_its_read_8(sc, GITS_TYPER) & GITS_TYPER_PTA) != 0) {
 		/* This ITS wants the redistributor physical address */
-		rpcpu = gicv3_get_redist(dev);
 		target = vtophys(rman_get_virtual(&rpcpu->res));
 	} else {
 		/* This ITS wants the unique processor number */