ZFS Crypto key hand off to kernel

[Darren J Moffat]

I've been testing the ZFS Crypto support in GRUB2 with Solaris 11 and 
found it works great - many thanks!

The 'zfskey' command works very nicely, however the key is only 
available to grub and isn't handed off to the kernel that GRUB2 starts up.

I'm considering an extension to the multiboot2 spec to provide a 
mechanism to hand off the key from GRUB2 to the running kernel.

I would like for this not to be specific to the ZFS crypto support but 
to be usable for LUKS and other systems that allow for an encrypted 
root/boot where both GRUB2 and the kernel need the same key.

Is this something that would be of interest for GRUB2 ?  If so I'll look 
at developing the spec update and a patch for GRUB2 to support it for 
the zfs crypto support.

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Darren J Moffat