From: Josh Poimboeuf <jpoimboe@redhat.com>
Date: Thu, 18 Aug 2016 15:59:05 +0000 (-0500)
Subject: x86/head: Remove useless zeroed word
X-Git-Tag: v4.14-rc1~2407^2~67
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ae952ffdfdf986ecd1452d552a69b82cae7b5e58;p=platform%2Fkernel%2Flinux-rpi.git

x86/head: Remove useless zeroed word

This zeroed word has no apparent purpose, so remove it.

Brian Gerst says:

  "FYI the word used to be the SS segment selector for the LSS
   instruction, which isn't needed in 64-bit mode."

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Byungchul Park <byungchul.park@lge.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nilay Vaish <nilayvaish@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/b056855c295bbb3825b97c1e9f7958539a4d6cf2.1471535549.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index e048142..c98a559 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -328,7 +328,6 @@ ENDPROC(start_cpu0)
 	.quad	INIT_PER_CPU_VAR(irq_stack_union)
 	GLOBAL(initial_stack)
 	.quad  init_thread_union+THREAD_SIZE-8
-	.word  0
 	__FINITDATA
 
 bad_address: