linux-kernel - Re: [PATCH v12 2.1/46] KVM: SVM: Create a separate mapping for the SEV-ES save area

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Message-ID: <YkyQib4Jda1epH3G@zn.tnic>
Date:   Tue, 5 Apr 2022 20:55:05 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Brijesh Singh <brijesh.singh@....com>,
        Paolo Bonzini <pbonzini@...hat.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>,
        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.shutemov@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        brijesh.ksingh@...il.com, tony.luck@...el.com, marcorr@...gle.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com,
        Venu Busireddy <venu.busireddy@...cle.com>
Subject: Re: [PATCH v12 2.1/46] KVM: SVM: Create a separate mapping for the
 SEV-ES save area

On Tue, Apr 05, 2022 at 01:27:43PM -0500, Brijesh Singh wrote:
> From: Tom Lendacky <thomas.lendacky@....com>
> 
> The save area for SEV-ES/SEV-SNP guests, as used by the hardware, is
> different from the save area of a non SEV-ES/SEV-SNP guest.
> 
> This is the first step in defining the multiple save areas to keep them
> separate and ensuring proper operation amongst the different types of
> guests. Create an SEV-ES/SEV-SNP save area and adjust usage to the new
> save area definition where needed.
> 
> Reviewed-by: Venu Busireddy <venu.busireddy@...cle.com>
> Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
> Signed-off-by: Brijesh Singh <brijesh.singh@....com>
> ---
> 
> Hi Paolo,
> 
> Now there is a conflict when applying this patch on 5.18-rc1. Please
> use the updated patch when merging the first four patches from the
> series.

Right, or if you'd prefer I carried them through the tip tree, lemme
know.

Thx.

-- 
Regards/Gruss,
    Boris.

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