[PATCH V34 10/29] hibernate: Disable when the kernel is locked down

[joeyli]

Hi experts,

On Mon, Jun 24, 2019 at 03:21:23PM +0200, Jiri Kosina wrote:
> On Sat, 22 Jun 2019, Pavel Machek wrote:
> 
> > > There is currently no way to verify the resume image when returning
> > > from hibernate.  This might compromise the signed modules trust model,
> > > so until we can work with signed hibernate images we disable it when the
> > > kernel is locked down.
> > 
> > I keep getting these...
> > 
> > IIRC suse has patches to verify the images.
> 
> Yeah, Joey Lee is taking care of those. CCing.
>

The last time that I sent for hibernation encryption and authentication is
here:
    https://lkml.org/lkml/2019/1/3/281

It needs some big changes after review:
 - Simplify the design: remove keyring dependency and trampoline.
 - Encrypted whole snapshot image instead of only data pages.
 - Using TPM:
        - Direct use TPM API in hibernation instead of keyring
        - Localities (suggested by James Bottomley)

I am still finding enough time to implement those changes, especial TPM
parts.

Thanks
Joey Lee