From: ChiaHao <andy.jhshiu@gmail.com>
Date: Thu, 12 Jun 2014 14:32:33 +0000 (+0100)
Subject: arm64: Bug fix in stack alignment exception
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3906c2b53cd23c2ae03e6ce41432c8e7f0a3cbbb;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

arm64: Bug fix in stack alignment exception

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 <andy.jhshiu@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
---

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index bf017f4ffb4f..9ce04ba6bcb0 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -279,7 +279,6 @@ el1_sp_pc:
 	 */
 	mrs	x0, far_el1
 	enable_dbg
-	mov	x1, x25
 	mov	x2, sp
 	b	do_sp_pc_abort
 el1_undef: