linux-kernel - Re: [PATCH v14 2/3] virt: Add TDX guest driver

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Message-ID: <Y0gQ03m7xT96pg69@zn.tnic>
Date:   Thu, 13 Oct 2022 15:21:23 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Sathyanarayanan Kuppuswamy 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Shuah Khan <shuah@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        "H . Peter Anvin" <hpa@...or.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Tony Luck <tony.luck@...el.com>,
        Kai Huang <kai.huang@...el.com>,
        Wander Lairson Costa <wander@...hat.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, linux-kselftest@...r.kernel.org,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v14 2/3] virt: Add TDX guest driver

On Wed, Oct 12, 2022 at 04:01:31PM -0700, Sathyanarayanan Kuppuswamy wrote:
> I am fine with adding an error message here. What about the above -EINVAL
> case? Do you suggest adding it there as well?

Right, you could dump the req.* fields it read from luserspace so that
one staring at the error message can actually see which of the fields
failed the check.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette