Index: kernel/arch/amd64/include/cpuid.h
===================================================================
--- kernel/arch/amd64/include/cpuid.h	(revision f429331b6108df4294a421a92f3e9aaa64d95732)
+++ kernel/arch/amd64/include/cpuid.h	(revision d85411ad6287f771f33198a5541df5fe7b82ee1e)
@@ -38,6 +38,8 @@
 #define AMD_CPUID_EXTENDED   0x80000001
 #define AMD_EXT_NOEXECUTE    20
+#define AMD_EXT_LONG_MODE    29
 
-#define INTEL_CPUID_STANDARD 0x1
+#define INTEL_CPUID_STANDARD 0x00000001
+#define INTEL_CPUID_EXTENDED 0x80000000
 #define INTEL_SSE2           26
 #define INTEL_FXSAVE         24