diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index a9f2041..f73cf83 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -473,6 +473,7 @@
 	.vm86_info = NULL,						\
 	.sysenter_cs = __KERNEL_CS,					\
 	.io_bitmap_ptr = NULL,						\
+	.gs = __KERNEL_PDA,						\
 }
 
 /*
@@ -500,7 +501,8 @@
 }
 
 #define start_thread(regs, new_eip, new_esp) do {		\
-	__asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0));	\
+	__asm__("movl %0,%%fs": :"r" (0));			\
+	regs->xgs = 0;						\
 	set_fs(USER_DS);					\
 	regs->xds = __USER_DS;					\
 	regs->xes = __USER_DS;					\