Re: [PATCH v1 0/8] x86_64 SandBox Mode arch hooks

[Edgecombe, Rick P]

On Wed, 2024-02-14 at 17:41 +0100, Petr Tesařík wrote:
> Second, a sandbox can run unmodified kernel code and interact
> directly
> with other parts of the kernel. It's not really possible with this
> initial patch series, but the plan is that sandbox mode can share
> locks
> with the kernel.
> 
> Third, sandbox code can be trusted for operations like parsing keys
> for
> the trusted keychain if the kernel is locked down, i.e. when even a
> process with UID 0 is not on the same trust level as kernel mode.

What use case needs to have the sandbox both protected from the kernel
(trusted operations) and non-privileged (the kernel protected from it
via CPL3)? It seems like opposite things.