* Uhhuh, this needs 65-bit arithmetic. We have a carry..
*/
#define __range_not_ok(addr,size) ({ \
- unsigned long flag,sum; \
+ unsigned long flag,roksum; \
__chk_user_ptr(addr); \
asm("# range_ok\n\r" \
"addq %3,%1 ; sbbq %0,%0 ; cmpq %1,%4 ; sbbq $0,%0" \
- :"=&r" (flag), "=r" (sum) \
+ :"=&r" (flag), "=r" (roksum) \
:"1" (addr),"g" ((long)(size)),"g" (current_thread_info()->addr_limit.seg)); \
flag; })
return copy_user_generic((__force void *)dst, src, size);
}
+#define ARCH_HAS_NOCACHE_UACCESS 1
+extern long __copy_user_nocache(void *dst, const void __user *src, unsigned size, int zerorest);
+
+static inline int __copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
+{
+ might_sleep();
+ return __copy_user_nocache(dst, src, size, 1);
+}
+
+static inline int __copy_from_user_inatomic_nocache(void *dst, const void __user *src, unsigned size)
+{
+ return __copy_user_nocache(dst, src, size, 0);
+}
+
#endif /* __X86_64_UACCESS_H */