intel_microcode_get_datasize
if (get_totalsize(mc_hdr) <= intel_microcode_get_datasize(mc_hdr) + MC_HEADER_SIZE)
ext_hdr = mc + intel_microcode_get_datasize(mc_hdr) + MC_HEADER_SIZE;
data_size = intel_microcode_get_datasize(mc_header);
data_size = intel_microcode_get_datasize(hdr);