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-rw-r--r--arch/s390/include/asm/maccess.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/s390/include/asm/maccess.h b/arch/s390/include/asm/maccess.h
new file mode 100644
index 0000000000..50225940d9
--- /dev/null
+++ b/arch/s390/include/asm/maccess.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_S390_MACCESS_H
+#define __ASM_S390_MACCESS_H
+
+#include <linux/types.h>
+
+#define MEMCPY_REAL_SIZE PAGE_SIZE
+#define MEMCPY_REAL_MASK PAGE_MASK
+
+struct iov_iter;
+
+extern unsigned long __memcpy_real_area;
+extern pte_t *memcpy_real_ptep;
+size_t memcpy_real_iter(struct iov_iter *iter, unsigned long src, size_t count);
+int memcpy_real(void *dest, unsigned long src, size_t count);
+#ifdef CONFIG_CRASH_DUMP
+int copy_oldmem_kernel(void *dst, unsigned long src, size_t count);
+#endif
+
+#endif /* __ASM_S390_MACCESS_H */