netdev - Re: [PATCH v2 6/6] tools/tdx: Add a sample attestation user app

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Message-ID: <a7757efc-cb62-013f-8976-427b354ff0f1@linux.intel.com>
Date:   Thu, 15 Jul 2021 08:19:08 -0700
From:   "Kuppuswamy, Sathyanarayanan" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Mian Yousaf Kaukab <ykaukab@...e.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Peter H Anvin <hpa@...or.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        platform-driver-x86@...r.kernel.org, bpf@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 6/6] tools/tdx: Add a sample attestation user app



On 7/15/21 1:36 AM, Mian Yousaf Kaukab wrote:
> In tdg_attest_ioctl() TDX_CMD_GEN_QUOTE case is calling
> tdx_mcall_tdreport() same as TDX_CMD_GET_TDREPORT case. Then what is
> the point of calling get_tdreport() here? Do you mean to call
> gen_report_data()?

Yes, I also noticed this issue and fixed the attestation driver to
to get TDREPORT data as input to get TDQUOTE.

I will be posting the fixed version of attestation driver today.


-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer