diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/ia64/include/asm/uaccess.h | 35 | ||||
| -rw-r--r-- | arch/ia64/lib/memcpy_mck.S | 13 |
3 files changed, 6 insertions, 43 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 18ca6a9ce566..0ed0e44856b2 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -53,6 +53,7 @@ config IA64 select ARCH_USE_CMPXCHG_LOCKREF select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_HARDENED_USERCOPY + select ARCH_HAS_RAW_COPY_USER default y help The Itanium Processor Family is Intel's 64-bit successor to diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h index bd159723dfde..82a7646c4416 100644 --- a/arch/ia64/include/asm/uaccess.h +++ b/arch/ia64/include/asm/uaccess.h @@ -235,46 +235,19 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use unsigned long count); static inline unsigned long -__copy_to_user (void __user *to, const void *from, unsigned long count) +raw_copy_to_user(void __user *to, const void *from, unsigned long count) { - check_object_size(from, count, true); - return __copy_user(to, (__force void __user *) from, count); } static inline unsigned long -__copy_from_user (void *to, const void __user *from, unsigned long count) +raw_copy_from_user(void *to, const void __user *from, unsigned long count) { - check_object_size(to, count, false); - return __copy_user((__force void __user *) to, from, count); } -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user -#define copy_to_user(to, from, n) \ -({ \ - void __user *__cu_to = (to); \ - const void *__cu_from = (from); \ - long __cu_len = (n); \ - \ - if (__access_ok(__cu_to, __cu_len)) { \ - check_object_size(__cu_from, __cu_len, true); \ - __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \ - } \ - __cu_len; \ -}) - -static inline unsigned long -copy_from_user(void *to, const void __user *from, unsigned long n) -{ - check_object_size(to, n, false); - if (likely(__access_ok(from, n))) - n = __copy_user((__force void __user *) to, from, n); - else - memset(to, 0, n); - return n; -} +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER extern unsigned long __do_clear_user (void __user *, unsigned long); diff --git a/arch/ia64/lib/memcpy_mck.S b/arch/ia64/lib/memcpy_mck.S index b264b6a7967b..bbbadc478f5b 100644 --- a/arch/ia64/lib/memcpy_mck.S +++ b/arch/ia64/lib/memcpy_mck.S @@ -556,9 +556,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ #define D r22 #define F r28 -#define memset_arg0 r32 -#define memset_arg2 r33 - #define saved_retval loc0 #define saved_rtlink loc1 #define saved_pfs_stack loc2 @@ -622,7 +619,7 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ * (faulting_addr - orig_dst) -> len to faulting st address * B = (cur_dst - orig_dst) -> len copied so far * C = A - B -> len need to be copied - * D = orig_len - A -> len need to be zeroed + * D = orig_len - A -> len need to be left along */ (p6) sub A = F, saved_in0 (p7) sub A = F, saved_in1 @@ -638,9 +635,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ sub D = saved_in2, A ;; cmp.gt p8,p0=C,r0 // more than 1 byte? - add memset_arg0=saved_in0, A -(p6) mov memset_arg2=0 // copy_to_user should not call memset -(p7) mov memset_arg2=D // copy_from_user need to have kbuf zeroed mov r8=0 mov saved_retval = D mov saved_rtlink = b0 @@ -652,11 +646,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ ;; add saved_retval=saved_retval,r8 // above might return non-zero value - cmp.gt p8,p0=memset_arg2,r0 // more than 1 byte? - mov out0=memset_arg0 // *s - mov out1=r0 // c - mov out2=memset_arg2 // n -(p8) br.call.sptk.few b0=memset ;; mov retval=saved_retval |