linux-kernel - Re: [PATCH v13 2/3] selftests: tdx: Test TDX attestation GetReport support

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Message-ID: <1cef159a-7827-47bc-639a-209521a337bf@linux.intel.com>
Date:   Mon, 12 Sep 2022 14:38:43 -0700
From:   Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     "Huang, Kai" <kai.huang@...el.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "shuah@...nel.org" <shuah@...nel.org>,
        "x86@...nel.org" <x86@...nel.org>, "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "wander@...hat.com" <wander@...hat.com>,
        "tim.gardner@...onical.com" <tim.gardner@...onical.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "isaku.yamahata@...il.com" <isaku.yamahata@...il.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "khalid.elmously@...onical.com" <khalid.elmously@...onical.com>,
        "marcelo.cerri@...onical.com" <marcelo.cerri@...onical.com>,
        "Cox, Philip" <philip.cox@...onical.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH v13 2/3] selftests: tdx: Test TDX attestation GetReport
 support



On 9/12/22 12:21 AM, Huang, Kai wrote:
> On Fri, 2022-09-09 at 12:27 -0700, Kuppuswamy Sathyanarayanan wrote:
>> Intel's TDX guest driver exposes TDX_CMD_GET_REPORT IOCTL interface to
>> get the TDREPORT from the user space.
> 
> (Sorry missed this one in previous reply).
> 
> Also, the IOCTL is to return the TDREPORT _to_ userspace, but not get the
> TDREPORT _from_ userspace.

How about following?

Intel's TDX guest driver exposes TDX_CMD_GET_REPORT IOCTL interface to

enable guest user space get the TDREPORT.

> 

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer