diff --git a/libc/kernel/uapi/linux/magic.h b/libc/kernel/uapi/linux/magic.h
index ebbb58c..ca1daea 100644
--- a/libc/kernel/uapi/linux/magic.h
+++ b/libc/kernel/uapi/linux/magic.h
@@ -98,4 +98,5 @@
 #define ZSMALLOC_MAGIC 0x58295829
 #define DMA_BUF_MAGIC 0x444d4142
 #define Z3FOLD_MAGIC 0x33
+#define PPC_CMM_MAGIC 0xc7571590
 #endif