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-rw-r--r--arch/um/include/shared/mem.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/um/include/shared/mem.h b/arch/um/include/shared/mem.h
new file mode 100644
index 000000000..98aacd544
--- /dev/null
+++ b/arch/um/include/shared/mem.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ */
+
+#ifndef __MEM_H__
+#define __MEM_H__
+
+extern int phys_mapping(unsigned long phys, unsigned long long *offset_out);
+
+extern unsigned long uml_physmem;
+static inline unsigned long uml_to_phys(void *virt)
+{
+ return(((unsigned long) virt) - uml_physmem);
+}
+
+static inline void *uml_to_virt(unsigned long phys)
+{
+ return((void *) uml_physmem + phys);
+}
+
+#endif