diff --git a/include/qemu/int128.h b/include/qemu/int128.h
index 76ea405922..52fc238421 100644
--- a/include/qemu/int128.h
+++ b/include/qemu/int128.h
@@ -58,6 +58,11 @@ static inline Int128 int128_and(Int128 a, Int128 b)
     return a & b;
 }
 
+static inline Int128 int128_or(Int128 a, Int128 b)
+{
+    return a | b;
+}
+
 static inline Int128 int128_rshift(Int128 a, int n)
 {
     return a >> n;
@@ -208,6 +213,11 @@ static inline Int128 int128_and(Int128 a, Int128 b)
     return (Int128) { a.lo & b.lo, a.hi & b.hi };
 }
 
+static inline Int128 int128_or(Int128 a, Int128 b)
+{
+    return (Int128) { a.lo | b.lo, a.hi | b.hi };
+}
+
 static inline Int128 int128_rshift(Int128 a, int n)
 {
     int64_t h;