diff --git a/target/linux/x86/64/config-default b/target/linux/x86/64/config-default
index 920ecdc52..97e1abab6 100644
--- a/target/linux/x86/64/config-default
+++ b/target/linux/x86/64/config-default
@@ -423,3 +423,4 @@ CONFIG_XEN_WDT=y
 CONFIG_XEN_XENBUS_FRONTEND=y
 CONFIG_XPS=y
 CONFIG_ZONE_DMA32=y
+CONFIG_BALLOON_COMPACTION=y
diff --git a/target/linux/x86/generic/config-default b/target/linux/x86/generic/config-default
index 127568473..2eb30069c 100644
--- a/target/linux/x86/generic/config-default
+++ b/target/linux/x86/generic/config-default
@@ -429,3 +429,4 @@ CONFIG_XEN_WDT=y
 CONFIG_XEN_XENBUS_FRONTEND=y
 CONFIG_XPS=y
 CONFIG_ZLIB_DEFLATE=y
+CONFIG_BALLOON_COMPACTION=y