linux-kernel - [PATCH] jump_label: Fix unaligned traps on sparc.

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Message-Id: <20101023.110624.226758370.davem@davemloft.net>
Date:	Sat, 23 Oct 2010 11:06:24 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	rostedt@...dmis.org
CC:	jbaron@...hat.com, linux-kernel@...r.kernel.org,
	sparclinux@...r.kernel.org
Subject: [PATCH] jump_label: Fix unaligned traps on sparc.


The vmlinux.lds.h knobs to emit the __jump_table section in the main
kernel image takes care to align the section, but this doesn't help
for the __jump_table section that gets emitted into modules.

Fix the resulting lack of section alignment by explicitly specifying
it in the assembler.

Signed-off-by: David S. Miller <davem@...emloft.net>

diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h
index 62e66d7..d95cf44 100644
--- a/arch/sparc/include/asm/jump_label.h
+++ b/arch/sparc/include/asm/jump_label.h
@@ -14,6 +14,7 @@
 			 "nop\n\t"				\
 			 "nop\n\t"				\
 			 ".pushsection __jump_table,  \"a\"\n\t"\
+			 ".align 4\n\t"				\
 			 ".word 1b, %l[" #label "], %c0\n\t"	\
 			 ".popsection \n\t"			\
 			 : :  "i" (key) :  : label);\
--
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