x86: use user_mode_vm instead of user_mode

For x86_64, it does not really matter. But makes the
code equal to i386.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c
index 7fd995e..0469243 100644
--- a/arch/x86/kernel/time_64.c
+++ b/arch/x86/kernel/time_64.c
@@ -33,7 +33,7 @@
 	/* Assume the lock function has either no stack frame or a copy
 	   of flags from PUSHF
 	   Eflags always has bits 22 and up cleared unlike kernel addresses. */
-	if (!user_mode(regs) && in_lock_functions(pc)) {
+	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
 #ifdef CONFIG_FRAME_POINTER
 		return *(unsigned long *)(regs->bp + sizeof(long));
 #else