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hc

2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/powerpc/mm/mmu_context.c
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@@ -1,13 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  Common implementation of switch_mm_irqs_off
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  *
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  *  Copyright IBM Corp. 2017
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- *
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- *  This program is free software; you can redistribute it and/or
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- *  modify it under the terms of the GNU General Public License
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- *  as published by the Free Software Foundation; either version
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- *  2 of the License, or (at your option) any later version.
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- *
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  */
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 #include <linux/mm.h>
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@@ -15,6 +10,7 @@
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 #include <linux/sched/mm.h>
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 #include <asm/mmu_context.h>
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+#include <asm/pgalloc.h>
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 #if defined(CONFIG_PPC32)
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 static inline void switch_mm_pgdir(struct task_struct *tsk,
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@@ -83,7 +79,7 @@
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 	 * context
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 	 */
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 	if (cpu_has_feature(CPU_FTR_ALTIVEC))
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-		asm volatile ("dssall");
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+		asm volatile (PPC_DSSALL);
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 	if (new_on_cpu)
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 		radix_kvm_prefetch_workaround(next);
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@@ -97,3 +93,12 @@
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 	switch_mmu_context(prev, next, tsk);
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 }
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+#ifndef CONFIG_PPC_BOOK3S_64
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+void arch_exit_mmap(struct mm_struct *mm)
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+{
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+	void *frag = pte_frag_get(&mm->context);
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+
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+	if (frag)
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+		pte_frag_destroy(frag);
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+}
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+#endif