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Message-ID: <7c09d15b-40bc-c6a0-3282-a94e9d9c36be@intel.com>
Date:   Mon, 25 Jul 2022 13:23:15 -0700
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Subject: Re: [PATCH v8 5/5] x86/tdx: Add Quote generation support
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To:     "Nakajima, Jun" <jun.nakajima@intel.com>,
        Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc:     Isaku Yamahata <isaku.yamahata@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        "x86@kernel.org" <x86@kernel.org>,
        "H . Peter Anvin" <hpa@zytor.com>,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        "Luck, Tony" <tony.luck@intel.com>,
        Andi Kleen <ak@linux.intel.com>,
        "Huang, Kai" <kai.huang@intel.com>,
        Wander Lairson Costa <wander@redhat.com>,
        "marcelo.cerri@canonical.com" <marcelo.cerri@canonical.com>,
        "tim.gardner@canonical.com" <tim.gardner@canonical.com>,
        "khalid.elmously@canonical.com" <khalid.elmously@canonical.com>,
        "Cox, Philip" <philip.cox@canonical.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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 <4B48A192-8305-4E94-AA0C-10FCE23F424D@intel.com>
From:   Dave Hansen <dave.hansen@intel.com>
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On 7/25/22 13:19, Nakajima, Jun wrote:
> 3. Need to be available in minimal/early runtime environments,
> including pre-boot, e.g. guest BIOS, no user-space yet.

Jun, are we talking about the same thing here?  This patch is for a
guest userspace -> guest kernel ABI.  This facility is *FOR* userspace.
 It can't possibly be used before userspace is running.

I'm horribly confused.