Index: head/sys/arm64/arm64/vm_machdep.c
===================================================================
--- head/sys/arm64/arm64/vm_machdep.c
+++ head/sys/arm64/arm64/vm_machdep.c
@@ -201,6 +201,8 @@
 
 	pcb = td->td_pcb;
 	pcb->pcb_tpidr_el0 = (register_t)tls_base;
+	if (td == curthread)
+		WRITE_SPECIALREG(tpidr_el0, tls_base);
 
 	return (0);
 }