Index: head/sys/arm64/arm64/gic_v3_its.c
===================================================================
--- head/sys/arm64/arm64/gic_v3_its.c
+++ head/sys/arm64/arm64/gic_v3_its.c
@@ -59,7 +59,7 @@
 #include "gic_v3_reg.h"
 #include "gic_v3_var.h"
 
-#define	GIC_V3_ITS_QUIRK_THUNDERX_PEM_BUS_OFFSET	144
+#define	GIC_V3_ITS_QUIRK_THUNDERX_PEM_BUS_OFFSET	88
 
 #include "pic_if.h"