linux-kernel - Re: [PATCH v5 1/3] x86/tdx: Add TDX Guest attestation interface driver

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Message-ID: <c27a2132-8fbc-8c02-9c1b-b91336133d61@linux.intel.com>
Date:   Mon, 2 May 2022 09:06:54 -0700
From:   Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
To:     Wander Lairson Costa <wander@...hat.com>
Cc:     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,
        "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>,
        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 v5 1/3] x86/tdx: Add TDX Guest attestation interface
 driver



On 5/2/22 5:18 AM, Wander Lairson Costa wrote:
>> +	ret = __tdx_module_call(TDX_GET_REPORT, virt_to_phys(tdreport),
>> +				virt_to_phys(reportdata), 0, 0, NULL);
>> +	if (ret) {
>> +		pr_debug("TDREPORT TDCALL failed, status:%lx\n",
>> +				TDCALL_STATUS_CODE(ret));
> Should we use pr_err instead?

I expect user app will handle this error case and print debug info.
So we don't need to use pr_err.

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer