linux-kernel - Re: [PATCH v9 1/6] x86/tdx: Add TDX Guest attestation interface driver

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Message-ID: <YwZKGzXloHWeFV/k@zn.tnic>
Date:   Wed, 24 Aug 2022 17:56:11 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     Dave Hansen <dave.hansen@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "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>,
        Kai Huang <kai.huang@...el.com>,
        Wander Lairson Costa <wander@...hat.com>,
        Isaku Yamahata <isaku.yamahata@...il.com>,
        marcelo.cerri@...onical.com, tim.gardner@...onical.com,
        khalid.elmously@...onical.com, philip.cox@...onical.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 1/6] x86/tdx: Add TDX Guest attestation interface
 driver

On Mon, Aug 22, 2022 at 03:41:00PM -0700, Sathyanarayanan Kuppuswamy wrote:
> In addition to above, I think there is a possibility to add IOCTL to get
> storage keys from the ACPI SVKL table. Storage Volume Key Table (SVKL) is
> used by the VBIOS to share keys required to access encrypted drives. Although
> we don't have a clear requirement, I suspect that we might add IOCTL for it.

So this all sounds like a single tdx-guest driver to me which services a
bunch of ioctls... not separate drivers.

Hmm?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette