linux-kernel - [tip:x86/boot] x86/boot: Remove unused copy_*

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Date:   Mon, 5 Jun 2017 02:14:47 -0700
From:   tip-bot for Jiri Slaby <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     peterz@...radead.org, jslaby@...e.cz,
        torvalds@...ux-foundation.org, hpa@...or.com,
        linux-kernel@...r.kernel.org, mingo@...nel.org, tglx@...utronix.de
Subject: [tip:x86/boot] x86/boot: Remove unused copy_*_gs() functions

Commit-ID:  28be1b454c2bb60e317b3135211a378fa2718886
Gitweb:     http://git.kernel.org/tip/28be1b454c2bb60e317b3135211a378fa2718886
Author:     Jiri Slaby <jslaby@...e.cz>
AuthorDate: Wed, 31 May 2017 10:12:39 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 5 Jun 2017 09:35:16 +0200

x86/boot: Remove unused copy_*_gs() functions

copy_from_gs() and copy_to_gs() are unused in the boot code. They have
actually never been used -- they were always commented out since their
addition in 2007:

  5be865661516 ("String-handling functions for the new x86 setup code.")

So remove them -- they can be restored from history if needed.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/20170531081243.5709-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/boot/copy.S | 20 --------------------
 1 file changed, 20 deletions(-)

diff --git a/arch/x86/boot/copy.S b/arch/x86/boot/copy.S
index 1eb7d29..15d9f74 100644
--- a/arch/x86/boot/copy.S
+++ b/arch/x86/boot/copy.S
@@ -65,23 +65,3 @@ GLOBAL(copy_to_fs)
 	popw	%es
 	retl
 ENDPROC(copy_to_fs)
-
-#if 0 /* Not currently used, but can be enabled as needed */
-GLOBAL(copy_from_gs)
-	pushw	%ds
-	pushw	%gs
-	popw	%ds
-	calll	memcpy
-	popw	%ds
-	retl
-ENDPROC(copy_from_gs)
-
-GLOBAL(copy_to_gs)
-	pushw	%es
-	pushw	%gs
-	popw	%es
-	calll	memcpy
-	popw	%es
-	retl
-ENDPROC(copy_to_gs)
-#endif