linux-kernel - [RFC v4 11/18] arm64: alternative: Mark .altinstr_replacement as containing executable instructions

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Date:   Fri, 16 Aug 2019 13:23:56 +0100
From:   Raphael Gault <raphael.gault@....com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        jpoimboe@...hat.com
Cc:     peterz@...radead.org, catalin.marinas@....com, will.deacon@....com,
        julien.thierry.kdev@...il.com, raph.gault+kdev@...il.com,
        Raphael Gault <raphael.gault@....com>
Subject: [RFC v4 11/18] arm64: alternative: Mark .altinstr_replacement as containing executable instructions

Until now, the section .altinstr_replacement wasn't marked as containing
executable instructions on arm64. This patch changes that so that it is
coherent with what is done on x86.

Signed-off-by: Raphael Gault <raphael.gault@....com>
---
 arch/arm64/include/asm/alternative.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h
index b9f8d787eea9..e9e6b81e3eb4 100644
--- a/arch/arm64/include/asm/alternative.h
+++ b/arch/arm64/include/asm/alternative.h
@@ -71,7 +71,7 @@ static inline void apply_alternatives_module(void *start, size_t length) { }
 	ALTINSTR_ENTRY(feature,cb)					\
 	".popsection\n"							\
 	" .if " __stringify(cb) " == 0\n"				\
-	".pushsection .altinstr_replacement, \"a\"\n"			\
+	".pushsection .altinstr_replacement, \"ax\"\n"			\
 	"663:\n\t"							\
 	newinstr "\n"							\
 	"664:\n\t"							\
-- 
2.17.1