diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2016-12-26 00:48:37 -0500 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-28 18:23:55 -0400 |
commit | e70f1d59be747a959c240bf2fe2ea9489b629496 (patch) | |
tree | 58f770df4f007d4e3e9da6f95195b46e7cb9ba3b /arch/s390 | |
parent | d597580d373774b1bdab84b3d26ff0b55162b916 (diff) |
s390: switch to extable.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/include/asm/extable.h | 28 | ||||
-rw-r--r-- | arch/s390/include/asm/uaccess.h | 26 |
2 files changed, 29 insertions, 25 deletions
diff --git a/arch/s390/include/asm/extable.h b/arch/s390/include/asm/extable.h new file mode 100644 index 000000000000..16cfe2d62eeb --- /dev/null +++ b/arch/s390/include/asm/extable.h @@ -0,0 +1,28 @@ +#ifndef __S390_EXTABLE_H +#define __S390_EXTABLE_H +/* + * The exception table consists of pairs of addresses: the first is the + * address of an instruction that is allowed to fault, and the second is + * the address at which the program should continue. No registers are + * modified, so it is entirely up to the continuation code to figure out + * what to do. + * + * All the routines below use bits of fixup code that are out of line + * with the main instruction path. This means when everything is well, + * we don't even have to jump over them. Further, they do not intrude + * on our cache or tlb entries. + */ + +struct exception_table_entry +{ + int insn, fixup; +}; + +static inline unsigned long extable_fixup(const struct exception_table_entry *x) +{ + return (unsigned long)&x->fixup + x->fixup; +} + +#define ARCH_HAS_RELATIVE_EXTABLE + +#endif diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h index 7228ed8da67d..29f5bf24e5fa 100644 --- a/arch/s390/include/asm/uaccess.h +++ b/arch/s390/include/asm/uaccess.h @@ -14,6 +14,7 @@ */ #include <asm/processor.h> #include <asm/ctl_reg.h> +#include <asm/extable.h> /* @@ -59,31 +60,6 @@ static inline int __range_ok(unsigned long addr, unsigned long size) #define access_ok(type, addr, size) __access_ok(addr, size) -/* - * The exception table consists of pairs of addresses: the first is the - * address of an instruction that is allowed to fault, and the second is - * the address at which the program should continue. No registers are - * modified, so it is entirely up to the continuation code to figure out - * what to do. - * - * All the routines below use bits of fixup code that are out of line - * with the main instruction path. This means when everything is well, - * we don't even have to jump over them. Further, they do not intrude - * on our cache or tlb entries. - */ - -struct exception_table_entry -{ - int insn, fixup; -}; - -static inline unsigned long extable_fixup(const struct exception_table_entry *x) -{ - return (unsigned long)&x->fixup + x->fixup; -} - -#define ARCH_HAS_RELATIVE_EXTABLE - /** * __copy_from_user: - Copy a block of data from user space, with less checking. * @to: Destination address, in kernel space. |