1 files changed, 4 insertions, 2 deletions

diff --git a/include/asm-um/processor-x86_64.h b/include/asm-um/processor-x86_64.h
index 10609af376c0..31c2d4d685bd 100644
--- a/include/asm-um/processor-x86_64.h
+++ b/include/asm-um/processor-x86_64.h
@@ -13,6 +13,7 @@
 struct arch_thread {
         unsigned long debugregs[8];
         int debugregs_seq;
+        unsigned long fs;
         struct faultinfo faultinfo;
 };
 
@@ -25,8 +26,9 @@ extern inline void rep_nop(void)
 #define cpu_relax()   rep_nop()
 
 #define INIT_ARCH_THREAD { .debugregs           = { [ 0 ... 7 ] = 0 }, \
-                           .debugregs_seq       = 0, \
-                           .faultinfo           = { 0, 0, 0 } }
+                           .debugregs_seq       = 0,                           \
+                           .fs                  = 0, \
+                           .faultinfo           = { 0, 0, 0 } }
 
 static inline void arch_flush_thread(struct arch_thread *thread)
 {