diff --git a/sys/arm64/include/pcpu.h b/sys/arm64/include/pcpu.h
--- a/sys/arm64/include/pcpu.h
+++ b/sys/arm64/include/pcpu.h
@@ -56,14 +56,9 @@
 struct pcb;
 struct pcpu;
 
-static inline struct pcpu *
-get_pcpu(void)
-{
-	struct pcpu *pcpu;
+register struct pcpu *pcpup __asm ("x18");
 
-	__asm __volatile("mov	%0, x18" : "=&r"(pcpu));
-	return (pcpu);
-}
+#define	get_pcpu()	pcpup
 
 static inline struct thread *
 get_curthread(void)
@@ -76,11 +71,11 @@
 
 #define	curthread get_curthread()
 
-#define	PCPU_GET(member)	(get_pcpu()->pc_ ## member)
-#define	PCPU_ADD(member, value)	(get_pcpu()->pc_ ## member += (value))
+#define	PCPU_GET(member)	(pcpup->pc_ ## member)
+#define	PCPU_ADD(member, value)	(pcpup->pc_ ## member += (value))
 #define	PCPU_INC(member)	PCPU_ADD(member, 1)
-#define	PCPU_PTR(member)	(&get_pcpu()->pc_ ## member)
-#define	PCPU_SET(member,value)	(get_pcpu()->pc_ ## member = (value))
+#define	PCPU_PTR(member)	(&pcpup->pc_ ## member)
+#define	PCPU_SET(member,value)	(pcpup->pc_ ## member = (value))
 
 #endif	/* _KERNEL */