Re: [PATCH v6 00/11] Intel SGX Driver

[Jarkko Sakkinen]

On Thu, Jan 04, 2018 at 03:06:43AM -0600, Dr. Greg Wettstein wrote:
> If we are talking about the issues motivating the KPTI work I don't
> have any useful information beyond what is raging through the industry
> right now.
> 
> With respect to SGX, the issues giving rise to KPTI are characteristic
> of what this technology is designed to address.  The technical 'news'
> sites, which are even more of an abomination then usual with this
> issue, are talking about privileged information such as credentials,
> passwords et.al being leaked by this vulnerability.
> 
> Data committed to enclaves are only accessible by the enclave, even
> the kernel, by definition, can't access the memory.  Given current
> events that is an arguably useful behavior.

Exactly. You could think adversary using meltdown leak utilizing malware
as having same capabilities as peripheral connected to a bus, which we
can defend against with SGX.

/Jarkko