@LinusTech, just wanted to let you know Intel have been pushing out microcode updates with regards to spectre and meltdown going back to Westmere. However most OEMs haven't or aren't going to push BIOS updates to support this.
The PDF goes over what SKUs they have and haven't patched yet.
https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf