Re: [kernel-hardening] [PATCH 4/6] Protectable Memory

[Laura Abbott]

On 02/13/2018 07:20 AM, Igor Stoppa wrote:
> Why alterations of page properties are not considered a risk and the physmap is?
> And how would it be easier (i suppose) to attack the latter?

Alterations are certainly a risk but with the physmap the
mapping is already there. Find the address and you have
access vs. needing to actually modify the properties
then do the access. I could also be complete off base
on my threat model here so please correct me if I'm
wrong.

I think your other summaries are good points though
and should go in the cover letter.

Thanks,
Laura