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

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

Signed-off-by: Gerald Schaefer <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Gerald Schaefer 2006-09-20 15:59:44 +02:00 • committed by Martin Schwidefsky
commit 6c2a9e6df6
6 changed files with 178 additions and 1 deletions
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2
include/asm-s390/setup.h
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@ -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__ */

1
include/asm-s390/uaccess.h
View file

@ -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)
{