From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/arch/openrisc/mm/tlb.c | 25 +++++++++++++------------
1 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/kernel/arch/openrisc/mm/tlb.c b/kernel/arch/openrisc/mm/tlb.c
index 6c253a2..2b6feab 100644
--- a/kernel/arch/openrisc/mm/tlb.c
+++ b/kernel/arch/openrisc/mm/tlb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OpenRISC tlb.c
*
@@ -9,11 +10,6 @@
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Julius Baxter <julius.baxter@orsoc.se>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/sched.h>
@@ -26,9 +22,7 @@
#include <linux/mm.h>
#include <linux/init.h>
-#include <asm/segment.h>
#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
#include <asm/mmu_context.h>
#include <asm/spr_defs.h>
@@ -143,21 +137,28 @@
void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *next_tsk)
{
+ unsigned int cpu;
+
+ if (unlikely(prev == next))
+ return;
+
+ cpu = smp_processor_id();
+
+ cpumask_clear_cpu(cpu, mm_cpumask(prev));
+ cpumask_set_cpu(cpu, mm_cpumask(next));
+
/* remember the pgd for the fault handlers
* this is similar to the pgd register in some other CPU's.
* we need our own copy of it because current and active_mm
* might be invalid at points where we still need to derefer
* the pgd.
*/
- current_pgd[smp_processor_id()] = next->pgd;
+ current_pgd[cpu] = next->pgd;
/* We don't have context support implemented, so flush all
* entries belonging to previous map
*/
-
- if (prev != next)
- local_flush_tlb_mm(prev);
-
+ local_flush_tlb_mm(prev);
}
/*
--
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