~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1,3 +1,4 @@
	1	+// SPDX-License-Identifier: GPL-2.0-or-later
1	2	/*
2	3	* OpenRISC tlb.c
3	4	*
..	..	@@ -9,11 +10,6 @@
9	10	* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
10	11	* Copyright (C) 2010-2011 Julius Baxter <julius.baxter@orsoc.se>
11	12	* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
12		- *
13		- * This program is free software; you can redistribute it and/or
14		- * modify it under the terms of the GNU General Public License
15		- * as published by the Free Software Foundation; either version
16		- * 2 of the License, or (at your option) any later version.
17	13	*/
18	14
19	15	#include <linux/sched.h>
..	..	@@ -26,9 +22,7 @@
26	22	#include <linux/mm.h>
27	23	#include <linux/init.h>
28	24
29		-#include <asm/segment.h>
30	25	#include <asm/tlbflush.h>
31		-#include <asm/pgtable.h>
32	26	#include <asm/mmu_context.h>
33	27	#include <asm/spr_defs.h>
34	28
..	..	@@ -143,21 +137,28 @@
143	137	void switch_mm(struct mm_struct prev, struct mm_struct next,
144	138	struct task_struct *next_tsk)
145	139	{
	140	+ unsigned int cpu;
	141	+
	142	+ if (unlikely(prev == next))
	143	+ return;
	144	+
	145	+ cpu = smp_processor_id();
	146	+
	147	+ cpumask_clear_cpu(cpu, mm_cpumask(prev));
	148	+ cpumask_set_cpu(cpu, mm_cpumask(next));
	149	+
146	150	/* remember the pgd for the fault handlers
147	151	* this is similar to the pgd register in some other CPU's.
148	152	* we need our own copy of it because current and active_mm
149	153	* might be invalid at points where we still need to derefer
150	154	* the pgd.
151	155	*/
152		- current_pgd[smp_processor_id()] = next->pgd;
	156	+ current_pgd[cpu] = next->pgd;
153	157
154	158	/* We don't have context support implemented, so flush all
155	159	* entries belonging to previous map
156	160	*/
157		-
158		- if (prev != next)
159		- local_flush_tlb_mm(prev);
160		-
	161	+ local_flush_tlb_mm(prev);
161	162	}
162	163
163	164	/*