Index: arch/amd64/include/cpu.h
===================================================================
--- arch/amd64/include/cpu.h	(revision 23684b75fbd877e18cebd073cdb4a435652e8c2c)
+++ arch/amd64/include/cpu.h	(revision 3b712407b1622e47a2a5c6daa5d419a062c6b246)
@@ -43,4 +43,5 @@
 #define AMD_MSR_LSTAR   0xc0000082
 #define AMD_MSR_SFMASK  0xc0000084
+#define AMD_MSR_FS      0xc0000100
 #define AMD_MSR_GS      0xc0000101
 
Index: arch/amd64/include/thread.h
===================================================================
--- arch/amd64/include/thread.h	(revision 23684b75fbd877e18cebd073cdb4a435652e8c2c)
+++ arch/amd64/include/thread.h	(revision 3b712407b1622e47a2a5c6daa5d419a062c6b246)
@@ -30,5 +30,5 @@
 #define __amd64_THREAD_H__
 
-#define ARCH_THREAD_DATA
+#define ARCH_THREAD_DATA __native tls;
 
 #endif