Index: arch/amd64/include/pm.h
===================================================================
--- arch/amd64/include/pm.h	(revision b524c5e0c4ab2be7669474ed11d7d797b4d5e53b)
+++ arch/amd64/include/pm.h	(revision f275cb36e9500aaf4935ed3ac6c1ed56b5a25dc3)
@@ -147,4 +147,5 @@
 extern struct ptr_16_64 gdtr;
 extern struct ptr_16_32 real_bootstrap_gdtr;
+extern struct ptr_16_32 protected_bootstrap_gdtr;
 
 extern void pm_init(void);