[$] Improving the handling of embargoed hardware-security bugs

Jiri Kosina kicked off a session on hardware vulnerabilities at the 2018
Kernel Maintainers Summit by noting that there are few complaints about how
the kernel community deals with security issues in general. That does not
hold for Meltdown and Spectre which, he said, had been 'completely
mishandled'. The subsequent handling of the L1TF vulnerability suggests that some lessons
have been learned, but there is still plenty of room for improvement in how
hardware vulnerabilities are handled in general.