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Date:	Fri, 18 Jul 2014 14:11:49 +0200
From:	Jiri Slaby <>
Cc:, ChiaHao <>,
	Catalin Marinas <>,
	Jiri Slaby <>
Subject: [PATCH 3.12 104/170] arm64: Bug fix in stack alignment exception

From: ChiaHao <>

3.12-stable review patch.  If anyone has any objections, please let me know.


commit 3906c2b53cd23c2ae03e6ce41432c8e7f0a3cbbb upstream.

The value of ESR has been stored into x1, and should be directly pass to
do_sp_pc_abort function, "MOV x1, x25" is an extra operation and do_sp_pc_abort
will get the wrong value of ESR.

Signed-off-by: ChiaHao <>
Signed-off-by: Catalin Marinas <>
Cc: <>
Signed-off-by: Jiri Slaby <>
 arch/arm64/kernel/entry.S | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 3881fd115ebb..028a1b91e2b3 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -275,7 +275,6 @@ el1_sp_pc:
 	 * Stack or PC alignment exception handling
 	mrs	x0, far_el1
-	mov	x1, x25
 	mov	x2, sp
 	b	do_sp_pc_abort

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