linux-kernel - Re: [PATCH v12 00/18] Enable FSGSBASE instructions

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Message-ID: <87o8qly3jo.fsf@nanos.tec.linutronix.de>
Date:   Mon, 18 May 2020 11:51:07 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Sasha Levin <sashal@...nel.org>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, bp@...en8.de, luto@...nel.org,
        hpa@...or.com, dave.hansen@...el.com, tony.luck@...el.com,
        ak@...ux.intel.com, ravi.v.shankar@...el.com,
        chang.seok.bae@...el.com
Subject: Re: [PATCH v12 00/18] Enable FSGSBASE instructions

Sasha Levin <sashal@...nel.org> writes:
> On Fri, May 15, 2020 at 12:24:14PM +0300, Jarkko Sakkinen wrote:
>>
>>Can you put me to the CC-loop for this patches. Some SGX-enabled
>>frameworks such as Graphene use out-of-tree changes to achieve this.
>>That's where the interest to possibly test this comes from.
>
> Indeed, we've seen a few hacks that basically just enable FSGSBASE:
>
>  - https://github.com/oscarlab/graphene-sgx-driver
>  - https://github.com/occlum/enable_rdfsbase

I'm really amazed by all these security experts enabling a full root
hole. It clearly puts the SGX hypocrisy into perspective.

Thanks,

        tglx