linear_write_system
return linear_write_system(ctxt, addr, desc, sizeof(*desc));
ret = linear_write_system(ctxt, old_tss_base, &tss_seg, sizeof(tss_seg));
ret = linear_write_system(ctxt, new_tss_base,
ret = linear_write_system(ctxt, old_tss_base + eip_offset, &tss_seg.eip,
ret = linear_write_system(ctxt, new_tss_base,