linux-kernel - [PATCH 30/58] xtensa: fix linker script transformation for .text.unlikely

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Message-Id: <1378112083-9475-31-git-send-email-luis.henriques@canonical.com>
Date:	Mon,  2 Sep 2013 09:54:15 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Max Filippov <jcmvbkbc@...il.com>, Chris Zankel <chris@...kel.net>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 30/58] xtensa: fix linker script transformation for .text.unlikely

3.5.7.21 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Max Filippov <jcmvbkbc@...il.com>

commit f6a03a12ecdbe0dd80a55f6df3b7206c5a403a49 upstream.

Now that binutils generate *.unlikely sections which don't follow
documented (info as) literal section naming rules, section name
transformation script doesn't work well resulting in the following
errors at vmlinux link time:

	main.c:(.text.unlikely+0x3): dangerous relocation: l32r: literal
				     placed after use: .literal.unlikely

Fix section name transformation script by adding specific rule for
.text.unlikely sections.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
Signed-off-by: Chris Zankel <chris@...kel.net>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 arch/xtensa/kernel/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index 59fc3fe..0f9f35f 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
 # Replicate rules in scripts/Makefile.build
 
 sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g'    \
+	-e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \
 	-e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g'
 
 quiet_cmd__cpp_lds_S = LDS     $@
-- 
1.8.3.2

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