2 * User address space access functions.
4 * For licencing details see kernel-base/COPYING
7 #include <linux/uaccess.h>
8 #include <linux/export.h>
11 * We rely on the nested NMI work to allow atomic faults from the NMI path; the
12 * nested NMI paths are careful to preserve CR2.
15 copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
19 if (__range_not_ok(from, n, TASK_SIZE))
23 * Even though this function is typically called from NMI/IRQ context
24 * disable pagefaults so that its behaviour is consistent even when
25 * called form other contexts.
28 ret = __copy_from_user_inatomic(to, from, n);
33 EXPORT_SYMBOL_GPL(copy_from_user_nmi);