diff --git a/audio/sfizz/files/patch-external_atomic__queue_include_atomic__queue_defs.h b/audio/sfizz/files/patch-external_atomic__queue_include_atomic__queue_defs.h
new file mode 100644
index 000000000000..f8e6a62f4f9f
--- /dev/null
+++ b/audio/sfizz/files/patch-external_atomic__queue_include_atomic__queue_defs.h
@@ -0,0 +1,16 @@
+--- external/atomic_queue/include/atomic_queue/defs.h.orig	2024-12-22 21:57:08 UTC
++++ external/atomic_queue/include/atomic_queue/defs.h
+@@ -36,6 +36,13 @@ static inline void spin_loop_pause() noexcept {
+ #endif
+ }
+ } // namespace atomic_queue
++#elif defined(__ppc64__) || defined(__powerpc64__)
++namespace atomic_queue {
++constexpr int CACHE_LINE_SIZE = 128; // TODO: Review that this is the correct value.
++static inline void spin_loop_pause() noexcept {
++    asm volatile("or 31,31,31 # very low priority"); // TODO: Review and benchmark that this is the right instruction.
++}
++} // namespace atomic_queue
+ #else
+ #error "Unknown CPU architecture."
+ #endif