[GIT PULL] Kernel lockdown for secure boot

Matthew Garrett mjg59 at google.com
Tue Apr 3 16:29:48 UTC 2018

On Tue, Apr 3, 2018 at 8:11 AM Andy Lutomirski <luto at kernel.org> wrote:
> Can you explain that much more clearly?  I'm asking why booting via
> UEFI Secure Boot should enable lockdown, and I don't see what this has
> to do with kexec.  And "someone blacklist[ing] your key in the
> bootloader" sounds like a political issue, not a technical issue.

A kernel that allows users arbitrary access to ring 0 is just an
overfeatured bootloader. Why would you want secure boot in that case?
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