From: Joel Stanley <joel@jms.id.au>
Date: Wed, 14 Nov 2018 03:02:18 +0000 (+1030)
Subject: powerpc/32: Include .branch_lt in data section
X-Git-Tag: v4.14.326~156
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c4e1e1cdfd77d8229a5f219106fcd358f415ddbb;p=thirdparty%2Fkernel%2Fstable.git

powerpc/32: Include .branch_lt in data section

commit 98ecc6768e8fdba95da1fc1efa0ef2d769e7fe1c upstream.

When building a 32 bit powerpc kernel with Binutils 2.31.1 this warning
is emitted:

 powerpc-linux-gnu-ld: warning: orphan section `.branch_lt' from
 `arch/powerpc/kernel/head_44x.o' being placed in section `.branch_lt'

As of binutils commit 2d7ad24e8726 ("Support PLT16 relocs against local
symbols")[1], 32 bit targets can produce .branch_lt sections in their
output.

Include these symbols in the .data section as the ppc64 kernel does.

[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=2d7ad24e8726ba4c45c9e67be08223a146a837ce
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Alan Modra <amodra@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index efb9a6982561c..7346875ac61dd 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -322,6 +322,7 @@ SECTIONS
 		*(.sdata2)
 		*(.got.plt) *(.got)
 		*(.plt)
+		*(.branch_lt)
 	}
 #else
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {