diff --git a/tools/include/xen-tools/common-macros.h b/tools/include/xen-tools/common-macros.h
index d53b881825..168691be0e 100644
--- a/tools/include/xen-tools/common-macros.h
+++ b/tools/include/xen-tools/common-macros.h
@@ -73,6 +73,7 @@
 #endif
 
 #define MASK_EXTR(v, m) (((v) & (m)) / ((m) & -(m)))
+#define MASK_INSR(v, m) (((v) * ((m) & -(m))) & (m))
 
 #ifndef __must_check
 #define __must_check __attribute__((__warn_unused_result__))
diff --git a/tools/libs/light/libxl_internal.h b/tools/libs/light/libxl_internal.h
index 8aba3e1389..61f4fe1dec 100644
--- a/tools/libs/light/libxl_internal.h
+++ b/tools/libs/light/libxl_internal.h
@@ -132,8 +132,6 @@
 
 #define DIV_ROUNDUP(n, d) (((n) + (d) - 1) / (d))
 
-#define MASK_INSR(v, m) (((v) * ((m) & -(m))) & (m))
-
 #define LIBXL__LOGGING_ENABLED
 
 #ifdef LIBXL__LOGGING_ENABLED
diff --git a/tools/tests/x86_emulator/x86-emulate.h b/tools/tests/x86_emulator/x86-emulate.h
index de1f826680..aa1ed75ec8 100644
--- a/tools/tests/x86_emulator/x86-emulate.h
+++ b/tools/tests/x86_emulator/x86-emulate.h
@@ -51,9 +51,6 @@
 #define DEFINE_PER_CPU(type, var) type per_cpu_##var
 #define this_cpu(var) per_cpu_##var
 
-#define MASK_EXTR(v, m) (((v) & (m)) / ((m) & -(m)))
-#define MASK_INSR(v, m) (((v) * ((m) & -(m))) & (m))
-
 #define __init
 #define __maybe_unused __attribute__((__unused__))