enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/arm64/include/asm/word-at-a-time.h
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@@ -1,17 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2013 ARM Ltd.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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 #ifndef __ASM_WORD_AT_A_TIME_H
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 #define __ASM_WORD_AT_A_TIME_H
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@@ -66,6 +55,8 @@
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 {
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 	unsigned long ret, tmp;
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+	__uaccess_enable_tco_async();
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+
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 	/* Load word from unaligned pointer addr */
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 	asm(
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 	"1:	ldr	%0, %3\n"
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@@ -87,6 +78,8 @@
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 	: "=&r" (ret), "=&r" (tmp)
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 	: "r" (addr), "Q" (*(unsigned long *)addr));
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+	__uaccess_disable_tco_async();
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+
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 	return ret;
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 }
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