From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file

---
 kernel/arch/arm64/lib/clear_user.S |   22 +++++-----------------
 1 files changed, 5 insertions(+), 17 deletions(-)

diff --git a/kernel/arch/arm64/lib/clear_user.S b/kernel/arch/arm64/lib/clear_user.S
index 4374020..48a3a26 100644
--- a/kernel/arch/arm64/lib/clear_user.S
+++ b/kernel/arch/arm64/lib/clear_user.S
@@ -1,23 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Based on arch/arm/lib/clear_user.S
  *
  * Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <linux/linkage.h>
 
 #include <asm/asm-uaccess.h>
+#include <asm/assembler.h>
 
 	.text
 
@@ -29,8 +19,7 @@
  *
  * Alignment fixed up by hardware.
  */
-ENTRY(__arch_clear_user)
-	uaccess_enable_not_uao x2, x3, x4
+SYM_FUNC_START(__arch_clear_user)
 	mov	x2, x1			// save the size for fixup return
 	subs	x1, x1, #8
 	b.mi	2f
@@ -50,13 +39,12 @@
 	b.mi	5f
 uao_user_alternative 9f, strb, sttrb, wzr, x0, 0
 5:	mov	x0, #0
-	uaccess_disable_not_uao x2, x3
 	ret
-ENDPROC(__arch_clear_user)
+SYM_FUNC_END(__arch_clear_user)
+EXPORT_SYMBOL(__arch_clear_user)
 
 	.section .fixup,"ax"
 	.align	2
 9:	mov	x0, x2			// return the original size
-	uaccess_disable_not_uao x2, x3
 	ret
 	.previous

--
Gitblit v1.6.2