x86: signal: cosmetic unification of handle_signal()

Make handle_signal() same.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/signal_32.c

@@ -550,6 +550,15 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	if (ret)
 		return ret;
 
+#ifdef CONFIG_X86_64
+	/*
+	 * This has nothing to do with segment registers,
+	 * despite the name.  This magic affects uaccess.h
+	 * macros' behavior.  Reset it to the normal setting.
+	 */
+	set_fs(USER_DS);
+#endif
+
 	/*
 	 * Clear the direction flag as per the ABI for function entry.
 	 */

arch/x86/kernel/signal_64.c

@@ -346,12 +346,14 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 	if (ret)
 		return ret;
 
+#ifdef CONFIG_X86_64
 	/*
 	 * This has nothing to do with segment registers,
 	 * despite the name.  This magic affects uaccess.h
 	 * macros' behavior.  Reset it to the normal setting.
 	 */
 	set_fs(USER_DS);
+#endif
 
 	/*
 	 * Clear the direction flag as per the ABI for function entry.