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Date:   Mon, 26 Nov 2018 15:04:36 -0800
From:   Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To:     Andy Lutomirski <luto@amacapital.net>
Cc:     Andy Lutomirski <luto@kernel.org>,
        "Dr. Greg Wettstein" <greg@enjellic.com>, X86 ML <x86@kernel.org>,
        Platform Driver <platform-driver-x86@vger.kernel.org>,
        linux-sgx@vger.kernel.org, Dave Hansen <dave.hansen@intel.com>,
        "Christopherson, Sean J" <sean.j.christopherson@intel.com>,
        nhorman@redhat.com, npmccallum@redhat.com,
        "Ayoun, Serge" <serge.ayoun@intel.com>, shay.katz-zamir@intel.com,
        haitao.huang@linux.intel.com,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Svahn, Kai" <kai.svahn@intel.com>, mark.shanahan@intel.com,
        Suresh Siddha <suresh.b.siddha@intel.com>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Darren Hart <dvhart@infradead.org>,
        Andy Shevchenko <andy@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v17 18/23] platform/x86: Intel SGX driver
Message-ID: <20181126230436.GA6737@linux.intel.com>
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On Mon, Nov 26, 2018 at 01:51:45PM -0800, Jarkko Sakkinen wrote:
> > ioctl(sgx, SGX_IOC_ADD_RIGHT, sgx_provisioning);
> > 
> > This requires extra syscalls, but it doesn’t have the combinatorial
> > explosion problem.
> 
> I like this design because it is extendable. I'm now also in the same
> page why we need to protect provisioning in the first place. I would
> slight restructure this as
> 
> /dev/sgx/control
> /dev/sgx/attributes/provision

I guess it would be OK to upstream only control node first as long as
provision attribute is denied in order to keep the already huge patch
set a tiny bit smaller?

/Jarkko