diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index b9e16855a037..ef86063c662a 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -92,4 +92,19 @@ do {									\
 #define smp_mb__after_atomic()      smp_mb()
 #define smp_mb__before_spinlock()   smp_mb()
 
+#ifdef CONFIG_PPC_BOOK3S_64
+/*
+ * Prevent execution of subsequent instructions until preceding branches have
+ * been fully resolved and are no longer executing speculatively.
+ */
+#define barrier_nospec_asm ori 31,31,0
+
+// This also acts as a compiler barrier due to the memory clobber.
+#define barrier_nospec() asm (stringify_in_c(barrier_nospec_asm) ::: "memory")
+
+#else /* !CONFIG_PPC_BOOK3S_64 */
+#define barrier_nospec_asm
+#define barrier_nospec()
+#endif
+
 #endif /* _ASM_POWERPC_BARRIER_H */