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From:   Wander Lairson Costa <wander@redhat.com>
Date:   Mon, 24 Oct 2022 09:57:53 -0300
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Subject: Re: [PATCH v15 2/3] virt: Add TDX guest driver
To:     Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc:     Borislav Petkov <bp@alien8.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        Shuah Khan <shuah@kernel.org>,
        Jonathan Corbet <corbet@lwn.net>,
        "H . Peter Anvin" <hpa@zytor.com>,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        Tony Luck <tony.luck@intel.com>,
        Kai Huang <kai.huang@intel.com>,
        Isaku Yamahata <isaku.yamahata@gmail.com>,
        marcelo.cerri@canonical.com, tim.gardner@canonical.com,
        khalid.elmously@canonical.com, philip.cox@canonical.com,
        linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
        linux-doc@vger.kernel.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On Sun, Oct 23, 2022 at 1:13 PM Sathyanarayanan Kuppuswamy
<sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
>
>
>
> On 10/20/22 9:39 PM, Greg Kroah-Hartman wrote:
> >>> You are allowing userspace to spam the kernel logs, please do not do
> >>> that.
> >> Added it to help userspace understand the reason for the failure (only for
> >> the cases like request param issues and TDCALL failure). Boris recommended
> >> adding it in the previous review.
> > Again, you just created a vector for userspace to spam the kernel log.
> > No kernel driver should ever do that.
> >
>
> Brois, any comments? Do you also agree?
>

Maybe dev_err_once() does the job?