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Date:   Thu, 3 Jun 2021 21:57:16 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Brijesh Singh <brijesh.singh@amd.com>
Cc:     x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org,
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        "H. Peter Anvin" <hpa@zytor.com>, Ard Biesheuvel <ardb@kernel.org>,
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        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
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        David Rientjes <rientjes@google.com>, tony.luck@intel.com,
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Subject: Re: [PATCH Part1 RFC v3 03/22] x86/sev: Save the negotiated GHCB
 version
Message-ID: <YLk0HO3SqspIilCD@zn.tnic>
References: <20210602140416.23573-1-brijesh.singh@amd.com>
 <20210602140416.23573-4-brijesh.singh@amd.com>
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On Wed, Jun 02, 2021 at 09:03:57AM -0500, Brijesh Singh wrote:
> +/*
> + * Since feature negotiation related variables are set early in the boot
> + * process they must reside in the .data section so as not to be zeroed
> + * out when the .bss section is later cleared.
> + */

From previous review:

 ...

   *
   * GHCB protocol version negotiated with the hypervisor.
   */

You need to document what this variable is used for so add a comment
over it please.

> +static u16 ghcb_version __section(".data");
> +

-- 
Regards/Gruss,
    Boris.

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