diff options
Diffstat (limited to 'arch/s390/include/asm/uaccess.h')
| -rw-r--r-- | arch/s390/include/asm/uaccess.h | 29 |
1 files changed, 9 insertions, 20 deletions
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index cdd0f0d999e2..ad6b91013a05 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -16,7 +16,7 @@ #include <asm/processor.h> #include <asm/ctl_reg.h> #include <asm/extable.h> - +#include <asm/facility.h> /* * The fs value determines whether argument validity checking should be @@ -26,27 +26,16 @@ * For historical reasons, these macros are grossly misnamed. */ -#define MAKE_MM_SEG(a) ((mm_segment_t) { (a) }) - - -#define KERNEL_DS MAKE_MM_SEG(0) -#define USER_DS MAKE_MM_SEG(1) +#define KERNEL_DS (0) +#define KERNEL_DS_SACF (1) +#define USER_DS (2) +#define USER_DS_SACF (3) #define get_ds() (KERNEL_DS) #define get_fs() (current->thread.mm_segment) -#define segment_eq(a,b) ((a).ar4 == (b).ar4) +#define segment_eq(a,b) (((a) & 2) == ((b) & 2)) -static inline void set_fs(mm_segment_t fs) -{ - current->thread.mm_segment = fs; - if (uaccess_kernel()) { - set_cpu_flag(CIF_ASCE_SECONDARY); - __ctl_load(S390_lowcore.kernel_asce, 7, 7); - } else { - clear_cpu_flag(CIF_ASCE_SECONDARY); - __ctl_load(S390_lowcore.user_asce, 7, 7); - } -} +void set_fs(mm_segment_t fs); static inline int __range_ok(unsigned long addr, unsigned long size) { @@ -95,7 +84,7 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n); static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) { - unsigned long spec = 0x810000UL; + unsigned long spec = 0x010000UL; int rc; switch (size) { @@ -125,7 +114,7 @@ static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size) { - unsigned long spec = 0x81UL; + unsigned long spec = 0x01UL; int rc; switch (size) { |