diff --git a/arch/ia64/include/asm/cmpxchg.h b/arch/ia64/include/asm/cmpxchg.h
new file mode 100644
index 0000000000000000000000000000000000000000..507c66c77600792d9aa51250419a8210906a8d19
--- /dev/null
+++ b/arch/ia64/include/asm/cmpxchg.h
@@ -0,0 +1 @@
+/* Future home of xchg() and cmpxchg() */
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 9dc52b63fc876d258955568782b1ace3c107d01d..ce74e143aea3b6eacf23d3f722ee07bee5f0c625 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -38,6 +38,7 @@
 #include <asm/pgalloc.h>
 #include <asm/processor.h>
 #include <asm/sal.h>
+#include <asm/switch_to.h>
 #include <asm/tlbflush.h>
 #include <asm/uaccess.h>
 #include <asm/unwind.h>