diff --git a/sdk/xtdk/amd64/arfuncs.h b/sdk/xtdk/amd64/arfuncs.h
index 6ac7a03..4cbe691 100644
--- a/sdk/xtdk/amd64/arfuncs.h
+++ b/sdk/xtdk/amd64/arfuncs.h
@@ -108,4 +108,8 @@ VOID
 ArWriteModelSpecificRegister(IN ULONG Register,
                              IN ULONGLONG Value);
 
+XTCDECL
+VOID
+ArYieldProcessor();
+
 #endif /* __XTDK_AMD64_ARFUNCS_H */
diff --git a/sdk/xtdk/i686/arfuncs.h b/sdk/xtdk/i686/arfuncs.h
index 603240d..dbb2611 100644
--- a/sdk/xtdk/i686/arfuncs.h
+++ b/sdk/xtdk/i686/arfuncs.h
@@ -104,4 +104,8 @@ VOID
 ArWriteModelSpecificRegister(IN ULONG Register,
                              IN ULONGLONG Value);
 
+XTCDECL
+VOID
+ArYieldProcessor();
+
 #endif /* __XTDK_I686_ARFUNCS_H */
diff --git a/xtoskrnl/ar/amd64/cpufunc.c b/xtoskrnl/ar/amd64/cpufunc.c
index 81a45aa..8698e13 100644
--- a/xtoskrnl/ar/amd64/cpufunc.c
+++ b/xtoskrnl/ar/amd64/cpufunc.c
@@ -592,3 +592,20 @@ ArWriteModelSpecificRegister(IN ULONG Register,
                    "a" (Low),
                    "d" (High));
 }
+
+/**
+ * Yields a current thread running on the processor.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+ArYieldProcessor()
+{
+    asm volatile("pause"
+                 :
+                 :
+                 : "memory");
+}
diff --git a/xtoskrnl/ar/i686/cpufunc.c b/xtoskrnl/ar/i686/cpufunc.c
index 76b83ac..a3c82ee 100644
--- a/xtoskrnl/ar/i686/cpufunc.c
+++ b/xtoskrnl/ar/i686/cpufunc.c
@@ -551,3 +551,20 @@ ArWriteModelSpecificRegister(IN ULONG Register,
                  : "c" (Register),
                    "A" (Value));
 }
+
+/**
+ * Yields a current thread running on the processor.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+ArYieldProcessor()
+{
+    asm volatile("pause"
+                 :
+                 :
+                 : "memory");
+}