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@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170531081243.5709-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/boot/copy.S b/arch/x86/boot/copy.S
index 1eb7d298b47d5466d39e1f0ae8804dc4ebe172bb..15d9f74b000863ba3d11c38b81b4df1761a9d532 100644 (file)
--- 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