linux-kernel - [PATCH 5.10 5/6] Hexagon: change jumps to must-extend in futex_atomic

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Message-Id: <20210709131543.604675641@linuxfoundation.org>
Date:   Fri,  9 Jul 2021 15:21:14 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sid Manning <sidneym@...eaurora.org>,
        Brian Cain <bcain@...eaurora.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 5.10 5/6] Hexagon: change jumps to must-extend in futex_atomic_*

From: Sid Manning <sidneym@...eaurora.org>

commit 6fff7410f6befe5744d54f0418d65a6322998c09 upstream.

Cross-section jumps from .fixup section must be extended.

Signed-off-by: Sid Manning <sidneym@...eaurora.org>
Signed-off-by: Brian Cain <bcain@...eaurora.org>
Tested-by: Nick Desaulniers <ndesaulniers@...gle.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/hexagon/include/asm/futex.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/hexagon/include/asm/futex.h
+++ b/arch/hexagon/include/asm/futex.h
@@ -21,7 +21,7 @@
 	"3:\n" \
 	".section .fixup,\"ax\"\n" \
 	"4: %1 = #%5;\n" \
-	"   jump 3b\n" \
+	"   jump ##3b\n" \
 	".previous\n" \
 	".section __ex_table,\"a\"\n" \
 	".long 1b,4b,2b,4b\n" \
@@ -90,7 +90,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval,
 	"3:\n"
 	".section .fixup,\"ax\"\n"
 	"4: %0 = #%6\n"
-	"   jump 3b\n"
+	"   jump ##3b\n"
 	".previous\n"
 	".section __ex_table,\"a\"\n"
 	".long 1b,4b,2b,4b\n"