--- src/sys/cpu/i386/include/specialreg.h	2007/01/12 23:12:59	1.8
+++ src/sys/cpu/i386/include/specialreg.h	2007/10/02 13:16:42	1.9
@@ -142,6 +142,7 @@
 #define MSR_BIOS_SIGN		0x08b
 #define MSR_PERFCTR0		0x0c1
 #define MSR_PERFCTR1		0x0c2
+#define MSR_IA32_EXT_CONFIG	0x0ee	/* Undocumented. Core Solo/Duo only */
 #define MSR_MTRRcap		0x0fe
 #define MSR_MCG_CAP		0x179
 #define MSR_MCG_STATUS		0x17a