From the Meltdown paper: *Jann disclosed the issue to Intel in June. The subsequ...

		xyzzyz on Jan 11, 2018 \| parent \| context \| favorite \| on: Protecting Google Cloud customers without impactin... From the Meltdown paper: Jann disclosed the issue to Intel in June. The subsequent activity around the KAISER patch was the reason we started investigating this issue.

This is probably the real answer