linux-kernel - Re: [PATCH v13 06/13] x86/sgx: Detect Intel SGX

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Message-ID: <CAHp75VeN7QoftgkqP-L6JRZi=MRpQkVioBLP7VDLwH=rpnEp_w@mail.gmail.com>
Date:   Mon, 3 Sep 2018 17:26:43 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        sean.j.christopherson@...el.com, nhorman@...hat.com,
        npmccallum@...hat.com, linux-sgx@...r.kernel.org,
        suresh.b.siddha@...el.com, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, serge.ayoun@...el.com,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Borislav Petkov <bp@...e.de>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v13 06/13] x86/sgx: Detect Intel SGX

On Mon, Aug 27, 2018 at 9:57 PM Jarkko Sakkinen
<jarkko.sakkinen@...ux.intel.com> wrote:
>
> From: Sean Christopherson <sean.j.christopherson@...el.com>
>
> 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.
>
> Add a check for SGX to arch/x86 and a new config option, INTEL_SGX_CORE.
> Expose a boolean variable 'sgx_enabled' to query whether or not the SGX
> support is available.

> +       prompt "Intel SGX core functionality"
> +       def_bool n

Default 'default' is 'n'. Perhaps changing prompt to bool will make it
one line less.

> +#include <asm/sgx.h>
> +#include <asm/sgx_pr.h>

Don't we put linux/* followed by asm/* ?

> +#include <linux/freezer.h>
> +#include <linux/highmem.h>
> +#include <linux/kthread.h>
> +#include <linux/ratelimit.h>
> +#include <linux/sched/signal.h>
> +#include <linux/slab.h>

-- 
With Best Regards,
Andy Shevchenko