ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/um/include/asm/mmu_context.h b/marvell/linux/arch/um/include/asm/mmu_context.h
new file mode 100644
index 0000000..5aee062
--- /dev/null
+++ b/marvell/linux/arch/um/include/asm/mmu_context.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ */
+
+#ifndef __UM_MMU_CONTEXT_H
+#define __UM_MMU_CONTEXT_H
+
+#include <linux/sched.h>
+#include <linux/mm_types.h>
+
+#include <asm/mmu.h>
+
+extern void uml_setup_stubs(struct mm_struct *mm);
+/*
+ * Needed since we do not use the asm-generic/mm_hooks.h:
+ */
+static inline int arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm)
+{
+ uml_setup_stubs(mm);
+ return 0;
+}
+extern void arch_exit_mmap(struct mm_struct *mm);
+static inline void arch_unmap(struct mm_struct *mm,
+ unsigned long start, unsigned long end)
+{
+}
+static inline void arch_bprm_mm_init(struct mm_struct *mm,
+ struct vm_area_struct *vma)
+{
+}
+
+static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
+ bool write, bool execute, bool foreign)
+{
+ /* by default, allow everything */
+ return true;
+}
+
+/*
+ * end asm-generic/mm_hooks.h functions
+ */
+
+#define deactivate_mm(tsk,mm) do { } while (0)
+
+extern void force_flush_all(void);
+
+static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
+{
+ /*
+ * This is called by fs/exec.c and sys_unshare()
+ * when the new ->mm is used for the first time.
+ */
+ __switch_mm(&new->context.id);
+ down_write_nested(&new->mmap_sem, 1);
+ uml_setup_stubs(new);
+ up_write(&new->mmap_sem);
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
+{
+ unsigned cpu = smp_processor_id();
+
+ if(prev != next){
+ cpumask_clear_cpu(cpu, mm_cpumask(prev));
+ cpumask_set_cpu(cpu, mm_cpumask(next));
+ if(next != &init_mm)
+ __switch_mm(&next->context.id);
+ }
+}
+
+static inline void enter_lazy_tlb(struct mm_struct *mm,
+ struct task_struct *tsk)
+{
+}
+
+extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
+
+extern void destroy_context(struct mm_struct *mm);
+
+#endif