linux-kernel - [RFC v5 46/57] arm64: alternative: Mark .altinstr_replacement as containing executable instructions

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Date:   Thu,  9 Jan 2020 16:02:49 +0000
From:   Julien Thierry <jthierry@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     jpoimboe@...hat.com, peterz@...radead.org, raphael.gault@....com,
        catalin.marinas@....com, will@...nel.org,
        Julien Thierry <jthierry@...hat.com>
Subject: [RFC v5 46/57] arm64: alternative: Mark .altinstr_replacement as containing executable instructions

From: Raphael Gault <raphael.gault@....com>

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>
Signed-off-by: Julien Thierry <jthierry@...hat.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"							\
--
2.21.0