diff options
Diffstat (limited to 'arch/s390/include/asm/uaccess.h')
| -rw-r--r-- | arch/s390/include/asm/uaccess.h | 45 |
1 files changed, 8 insertions, 37 deletions
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index e1be769cbf9f..1f150a7cfb3d 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -13,6 +13,7 @@ /* * User space memory access functions */ +#include <asm/asm-extable.h> #include <asm/processor.h> #include <asm/ctl_reg.h> #include <asm/extable.h> @@ -79,8 +80,6 @@ union oac { }; }; -#ifdef CONFIG_HAVE_MARCH_Z10_FEATURES - #define __put_get_user_asm(to, from, size, oac_spec) \ ({ \ int __rc; \ @@ -90,14 +89,10 @@ union oac { "0: mvcos %[_to],%[_from],%[_size]\n" \ "1: xr %[rc],%[rc]\n" \ "2:\n" \ - ".pushsection .fixup, \"ax\"\n" \ - "3: lhi %[rc],%[retval]\n" \ - " jg 2b\n" \ - ".popsection\n" \ - EX_TABLE(0b,3b) EX_TABLE(1b,3b) \ + EX_TABLE_UA(0b,2b,%[rc]) EX_TABLE_UA(1b,2b,%[rc]) \ : [rc] "=&d" (__rc), [_to] "+Q" (*(to)) \ : [_size] "d" (size), [_from] "Q" (*(from)), \ - [retval] "K" (-EFAULT), [spec] "d" (oac_spec.val) \ + [spec] "d" (oac_spec.val) \ : "cc", "0"); \ __rc; \ }) @@ -178,22 +173,6 @@ static __always_inline int __get_user_fn(void *x, const void __user *ptr, unsign return rc; } -#else /* CONFIG_HAVE_MARCH_Z10_FEATURES */ - -static inline int __put_user_fn(void *x, void __user *ptr, unsigned long size) -{ - size = raw_copy_to_user(ptr, x, size); - return size ? -EFAULT : 0; -} - -static inline int __get_user_fn(void *x, const void __user *ptr, unsigned long size) -{ - size = raw_copy_from_user(x, ptr, size); - return size ? -EFAULT : 0; -} - -#endif /* CONFIG_HAVE_MARCH_Z10_FEATURES */ - /* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. @@ -289,7 +268,7 @@ static inline unsigned long __must_check clear_user(void __user *to, unsigned lo return __clear_user(to, n); } -int copy_to_user_real(void __user *dest, void *src, unsigned long count); +int copy_to_user_real(void __user *dest, unsigned long src, unsigned long count); void *s390_kernel_write(void *dst, const void *src, size_t size); int __noreturn __put_kernel_bad(void); @@ -302,13 +281,9 @@ int __noreturn __put_kernel_bad(void); "0: " insn " %2,%1\n" \ "1: xr %0,%0\n" \ "2:\n" \ - ".pushsection .fixup, \"ax\"\n" \ - "3: lhi %0,%3\n" \ - " jg 2b\n" \ - ".popsection\n" \ - EX_TABLE(0b,3b) EX_TABLE(1b,3b) \ + EX_TABLE_UA(0b,2b,%0) EX_TABLE_UA(1b,2b,%0) \ : "=d" (__rc), "+Q" (*(to)) \ - : "d" (val), "K" (-EFAULT) \ + : "d" (val) \ : "cc"); \ __rc; \ }) @@ -349,13 +324,9 @@ int __noreturn __get_kernel_bad(void); "0: " insn " %1,%2\n" \ "1: xr %0,%0\n" \ "2:\n" \ - ".pushsection .fixup, \"ax\"\n" \ - "3: lhi %0,%3\n" \ - " jg 2b\n" \ - ".popsection\n" \ - EX_TABLE(0b,3b) EX_TABLE(1b,3b) \ + EX_TABLE_UA(0b,2b,%0) EX_TABLE_UA(1b,2b,%0) \ : "=d" (__rc), "+d" (val) \ - : "Q" (*(from)), "K" (-EFAULT) \ + : "Q" (*(from)) \ : "cc"); \ __rc; \ }) |