kernel_code
kernel_code.start = virt_to_phys(_text);
kernel_code.end = virt_to_phys(__init_begin - 1);
if (kernel_code.start >= res->start &&
kernel_code.end <= res->end)
request_resource(res, &kernel_code);
kernel_code.start = __pa_symbol(_text);
kernel_code.end = __pa_symbol(__init_begin - 1);
insert_resource(&iomem_resource, &kernel_code);