linux-kernel - Re: [PATCH v8 04/40] x86/sev: Define the Linux specific guest termination reasons

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Message-ID: <YbkZEJ/R3rLcLkJ2@zn.tnic>
Date:   Tue, 14 Dec 2021 23:22:08 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Brijesh Singh <brijesh.singh@....com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        linux-efi@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        linux-coco@...ts.linux.dev, linux-mm@...ck.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Joerg Roedel <jroedel@...e.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        "H. Peter Anvin" <hpa@...or.com>, Ard Biesheuvel <ardb@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Sergio Lopez <slp@...hat.com>, Peter Gonda <pgonda@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        David Rientjes <rientjes@...gle.com>,
        Dov Murik <dovmurik@...ux.ibm.com>,
        Tobin Feldman-Fitzthum <tobin@....com>,
        Michael Roth <michael.roth@....com>,
        Vlastimil Babka <vbabka@...e.cz>,
        "Kirill A . Shutemov" <kirill@...temov.name>,
        Andi Kleen <ak@...ux.intel.com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        tony.luck@...el.com, marcorr@...gle.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com
Subject: Re: [PATCH v8 04/40] x86/sev: Define the Linux specific guest
 termination reasons

On Fri, Dec 10, 2021 at 09:42:56AM -0600, Brijesh Singh wrote:
> GHCB specification defines the reason code for reason set 0. The reason
> codes defined in the set 0 do not cover all possible causes for a guest
> to request termination.
> 
> The reason set 1 to 255 is reserved for the vendor-specific codes.
> Reseve the reason set 1 for the Linux guest. Define an error codes for

Yah, your spellchecker is still broken:

Reseve the reason set 1 for the Linux guest. Define an error codes for
Unknown word [Reseve] in commit message, suggestions:
        ['Reeves', 'Reeve', 'Reserve', 'Res eve', 'Res-eve', 'Severe', 'Reverse', 'Sevres', 'Revers']

> reason set 1.

"... and use them in the Linux guest so that one can have meaningful
termination reasons and thus better guest failure diagnosis."

The *why* is very important.

-- 
Regards/Gruss,
    Boris.

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