[3.13.y.z extended stable] Patch "MIPS: ftrace: Fix a microMIPS build problem" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Fri Oct 31 20:53:43 UTC 2014


This is a note to let you know that I have just added a patch titled

    MIPS: ftrace: Fix a microMIPS build problem

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.11.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From da02fecfa7cd90818630a50436b48e5da7762bbb Mon Sep 17 00:00:00 2001
From: Markos Chandras <markos.chandras at imgtec.com>
Date: Mon, 20 Oct 2014 09:39:31 +0100
Subject: MIPS: ftrace: Fix a microMIPS build problem

commit aedd153f5bb5b1f1d6d9142014f521ae2ec294cc upstream.

Code before the .fixup section needs to have the .insn directive.
This has no side effects on MIPS32/64 but it affects the way microMIPS
loads the address for the return label.

Fixes the following build problem:
mips-linux-gnu-ld: arch/mips/built-in.o: .fixup+0x4a0: Unsupported jump between
ISA modes; consider recompiling with interlinking enabled.
mips-linux-gnu-ld: final link failed: Bad value
Makefile:819: recipe for target 'vmlinux' failed

The fix is similar to 1658f914ff91c3bf ("MIPS: microMIPS:
Disable LL/SC and fix linker bug.")

Signed-off-by: Markos Chandras <markos.chandras at imgtec.com>
Cc: linux-mips at linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8117/
Signed-off-by: Ralf Baechle <ralf at linux-mips.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 arch/mips/include/asm/ftrace.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h
index ce35c9a..370ae7c 100644
--- a/arch/mips/include/asm/ftrace.h
+++ b/arch/mips/include/asm/ftrace.h
@@ -24,7 +24,7 @@ do {							\
 	asm volatile (					\
 		"1: " load " %[" STR(dst) "], 0(%[" STR(src) "])\n"\
 		"   li %[" STR(error) "], 0\n"		\
-		"2:\n"					\
+		"2: .insn\n"				\
 							\
 		".section .fixup, \"ax\"\n"		\
 		"3: li %[" STR(error) "], 1\n"		\
@@ -46,7 +46,7 @@ do {						\
 	asm volatile (				\
 		"1: " store " %[" STR(src) "], 0(%[" STR(dst) "])\n"\
 		"   li %[" STR(error) "], 0\n"	\
-		"2:\n"				\
+		"2: .insn\n"			\
 						\
 		".section .fixup, \"ax\"\n"	\
 		"3: li %[" STR(error) "], 1\n"	\
--
1.9.1





More information about the kernel-team mailing list