diff --git a/[refs] b/[refs]
index 556770bb81e2..3feb957a5b89 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 682128939f546e3a9cdd9fef392b932dd9c41a65
+refs/heads/master: fae419f2abd15ab7d1cd1413e6683a276a4e14e2
diff --git a/trunk/arch/x86/include/asm/uv/uv_hub.h b/trunk/arch/x86/include/asm/uv/uv_hub.h
index 0cc955f16aec..8f1332bbfd72 100644
--- a/trunk/arch/x86/include/asm/uv/uv_hub.h
+++ b/trunk/arch/x86/include/asm/uv/uv_hub.h
@@ -232,6 +232,13 @@ static inline unsigned long uv_gpa(void *v)
 	return uv_soc_phys_ram_to_gpa(__pa(v));
 }
 
+/* Top two bits indicate the requested address is in MMR space.  */
+static inline int
+uv_gpa_in_mmr_space(unsigned long gpa)
+{
+	return (gpa >> 62) == 0x3UL;
+}
+
 /* UV global physical address --> socket phys RAM */
 static inline unsigned long uv_gpa_to_soc_phys_ram(unsigned long gpa)
 {