Index: kernel/arch/sparc64/include/mm/sun4v/km.h
===================================================================
--- kernel/arch/sparc64/include/mm/sun4v/km.h	(revision 55896b6837c19f8fe505af9cbe31069aa02c168b)
+++ kernel/arch/sparc64/include/mm/sun4v/km.h	(revision ec1c8e6e352b3d48ddb5e318e01afc0a65d3b57a)
@@ -36,4 +36,15 @@
 #define KERN_sparc64_sun4v_KM_H_
 
+/*
+ * Do not use the 4 GiB area on either side of the VA hole to meet the
+ * limitations of the UltraSPARC T1 CPU.
+ */
+
+#define KM_SPARC64_T1_IDENTITY_START		UINT64_C(0x0000000000000000)
+#define KM_SPARC64_T1_IDENTITY_SIZE		UINT64_C(0x00007fff00000000)
+
+#define KM_SPARC64_T1_NON_IDENTITY_START	UINT64_C(0xffff800100000000)
+#define KM_SPARC64_T1_NON_IDENTITY_SIZE		UINT64_C(0x00007fff00000000)
+
 extern void km_identity_arch_init(void);
 extern void km_non_identity_arch_init(void);