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

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Message-ID: <YbfhrBtBw6lRVPFF@dt>
Date:   Mon, 13 Dec 2021 18:13:32 -0600
From:   Venu Busireddy <venu.busireddy@...cle.com>
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>,
        Borislav Petkov <bp@...en8.de>,
        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 2021-12-10 09:42:56 -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.

s/set 1 to 255 is/sets 1 to 255 are/

> Reseve the reason set 1 for the Linux guest. Define an error codes for

s/Define an/Define the/

> reason set 1.
> 
> While at it, change the sev_es_terminate() to accept the reason set
> parameter.
> 
> Signed-off-by: Brijesh Singh <brijesh.singh@....com>

With that...

Reviewed-by: Venu Busireddy <venu.busireddy@...cle.com>

> ---
>  arch/x86/boot/compressed/sev.c    |  6 +++---
>  arch/x86/include/asm/sev-common.h |  8 ++++++++
>  arch/x86/kernel/sev-shared.c      | 11 ++++-------
>  arch/x86/kernel/sev.c             |  4 ++--
>  4 files changed, 17 insertions(+), 12 deletions(-)