linux-kernel - Re: [PATCH v11 00/45] Add AMD Secure Nested Paging (SEV-SNP) Guest Support

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Message-ID: <519f5e8e-18d1-43ac-ef90-0320d21c3a55@redhat.com>
Date:   Wed, 2 Mar 2022 17:09:34 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Brijesh Singh <brijesh.singh@....com>, 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
Subject: Re: [PATCH v11 00/45] Add AMD Secure Nested Paging (SEV-SNP) Guest
 Support

On 3/2/22 15:22, Borislav Petkov wrote:
> On Thu, Feb 24, 2022 at 10:55:40AM -0600, Brijesh Singh wrote:
>> This part of Secure Encrypted Paging (SEV-SNP) series focuses on the changes
>> required in a guest OS for SEV-SNP support.
> 
> So the first 4 are KVM material.
> 
> Paolo, what's the story here, are you gonna take them and give me an
> immutable branch or do you have another idea?

Sure: https://git.kernel.org/pub/scm/virt/kvm/kvm.git, branch svm-for-snp.

$ git log -4 --oneline --reverse
3c95d3fab229 KVM: SVM: Define sev_features and vmpl field in the VMSA
0c86f9cf27f7 KVM: SVM: Create a separate mapping for the SEV-ES save area
c5e0ec4c742d KVM: SVM: Create a separate mapping for the GHCB save area
88c955d1fc93 (HEAD -> kvm/svm-for-snp) KVM: SVM: Update the SEV-ES save area mapping

Paolo