__masked_user_access_begin
#define masked_user_access_begin(p) __masked_user_access_begin(p, KUAP_READ_WRITE)
#define masked_user_read_access_begin(p) __masked_user_access_begin(p, KUAP_READ)
#define masked_user_write_access_begin(p) __masked_user_access_begin(p, KUAP_WRITE)