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Date:   Tue, 19 Jun 2018 17:59:43 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To:     Pavel Machek <pavel@ucw.cz>
Cc:     x86@kernel.org, platform-driver-x86@vger.kernel.org,
        dave.hansen@intel.com, sean.j.christopherson@intel.com,
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        Alexei Starovoitov <ast@kernel.org>,
        Andi Kleen <ak@linux.intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Borislav Petkov <bp@suse.de>,
        "David S. Miller" <davem@davemloft.net>,
        David Woodhouse <dwmw@amazon.co.uk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
        "open list:INTEL SGX" <intel-sgx-kernel-dev@lists.01.org>,
        Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
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        Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        Vikas Shivappa <vikas.shivappa@linux.intel.com>
Subject: Re: [PATCH v11 00/13] Intel SGX1 support
Message-ID: <20180619145943.GC8034@linux.intel.com>
References: <20180608171216.26521-1-jarkko.sakkinen@linux.intel.com>
 <20180612105011.GA26931@amd>
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On Tue, Jun 12, 2018 at 12:50:12PM +0200, Pavel Machek wrote:
> On Fri 2018-06-08 19:09:35, Jarkko Sakkinen wrote:
> > Intel(R) SGX is a set of CPU instructions that can be used by applications
> > to set aside private regions of code and data. The code outside the enclave
> > is disallowed to access the memory inside the enclave by the CPU access
> > control.  In a way you can think that SGX provides inverted sandbox. It
> > protects the application from a malicious host.
> 
> Do you intend to allow non-root applications to use SGX?
> 
> What are non-evil uses for SGX?
> 
> ...because it is quite useful for some kinds of evil:

The default permissions for the device are 600.

/Jarkko