linux-kernel - Re: [intel-sgx-kernel-dev] [PATCH v11 07/13] x86, sgx: detect Intel SGX

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Date:   Mon, 25 Jun 2018 10:39:28 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>
Cc:     X86 ML <x86@...nel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        npmccallum@...hat.com, LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        intel-sgx-kernel-dev@...ts.01.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [intel-sgx-kernel-dev] [PATCH v11 07/13] x86, sgx: detect Intel
 SGX

On Mon, 2018-06-18 at 14:36 -0700, Andy Lutomirski wrote:
> SGX: disabled by firmware
> SGX: disabled because CPU does not support flexible launch control
> SGX: disabled because firmware does not support flexible launch control
> SGX: disabled because the phase of the moon is wrong
> SGX: enabled; using SGX1
> SGX: enabled, using SGX2

Makes sense for trouble-shooting (and in that case the check for
SGX_ENABLE flag is more appropriate).

/Jarkko