[S390] Use alternative user-copy operations for new hardware.

This introduces new user-copy operations which are optimized for
copying more than 256 Bytes on new hardware.

Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 00c03e46689b..f1959732b6fd 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -44,10 +44,12 @@ extern unsigned long machine_flags;
 #define MACHINE_HAS_IEEE        (machine_flags & 2)
 #define MACHINE_HAS_CSP         (machine_flags & 8)
 #define MACHINE_HAS_DIAG44      (1)
+#define MACHINE_HAS_MVCOS       (0)
 #else /* __s390x__ */
 #define MACHINE_HAS_IEEE        (1)
 #define MACHINE_HAS_CSP         (1)
 #define MACHINE_HAS_DIAG44      (machine_flags & 32)
+#define MACHINE_HAS_MVCOS       (machine_flags & 512)
 #endif /* __s390x__ */
 
 
diff --git a/include/asm-s390/uaccess.h b/include/asm-s390/uaccess.h
index 39a2716ae188..e2047b0c9092 100644
--- a/include/asm-s390/uaccess.h
+++ b/include/asm-s390/uaccess.h
@@ -100,6 +100,7 @@ struct uaccess_ops {
 
 extern struct uaccess_ops uaccess;
 extern struct uaccess_ops uaccess_std;
+extern struct uaccess_ops uaccess_mvcos;
 
 static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
 {