[PATCH V3 08/11] kexec: Disable at runtime if the kernel enforces module loading restrictions

[Josh Boyer]

On Wed, Sep 4, 2013 at 4:09 PM,  <jerry.hoemann at hp.com> wrote:
> On Tue, Sep 03, 2013 at 07:50:15PM -0400, Matthew Garrett wrote:
>> kexec permits the loading and execution of arbitrary code in ring 0, which
>> is something that module signing enforcement is meant to prevent. It makes
>> sense to disable kexec in this situation.
>>
>> Signed-off-by: Matthew Garrett <matthew.garrett at nebula.com>
>
>
> Matthew,
>
> Disabling kexec will disable kdump, correct?

Yes.

> Are there plans to enable kdump on a system where secure
> boot is enabled?

Vivek Goyal has been working on this.  I've not seen the code yet, but
I believe it should be posted somewhere relatively soon.  We're also
planning on talking about it at the Secure Boot microconference at
Linux Plumbers in two weeks.

josh