linux-kernel - Re: [PATCH v3 4/4] platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver

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Message-ID: <c76f77af-47cb-20a9-3187-8241284c6921@linux.intel.com>
Date:   Tue, 19 Apr 2022 07:26:11 -0700
From:   Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Dave Hansen <dave.hansen@...el.com>,
        Kai Huang <kai.huang@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>
Cc:     "H . Peter Anvin" <hpa@...or.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v3 4/4] platform/x86: intel_tdx_attest: Add TDX Guest
 attestation interface driver



On 4/19/22 7:24 AM, Dave Hansen wrote:
>> Current driver size is ~300 lines. It adds ~500 bytes to the kernel
>> binary if it is built-in.
> That doesn't sound like good use of a Kconfig option to me.  Just
> explain in the cover letter:
> 
> 	Any distribution enabling TDX is also expected to need
> 	attestation.  The compiled size is quite small (500 bytes).

Ok. I will add it.

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer