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Subject: Re: [RFC] KVM: x86: Support KVM VMs sharing SEV context
To:     Ashish Kalra <ashish.kalra@amd.com>,
        James Bottomley <James.Bottomley@HansenPartnership.com>
Cc:     natet@google.com, brijesh.singh@amd.com, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, rientjes@google.com,
        seanjc@google.com, srutherford@google.com, thomas.lendacky@amd.com,
        x86@kernel.org, Tobin Feldman-Fitzthum <tobin@ibm.com>,
        DOV MURIK <Dov.Murik1@il.ibm.com>
References: <20210224085915.28751-1-natet@google.com>
 <7cb132ce522728f7689618832a65e31e37788201.camel@HansenPartnership.com>
 <20210225181812.GA5046@ashkalra_ubuntu_server>
From:   Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <b885c283-ceb3-b9bc-516b-c28771652a7c@redhat.com>
Date:   Thu, 25 Feb 2021 21:33:09 +0100
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On 25/02/21 19:18, Ashish Kalra wrote:
> I do believe that some of these alternative SEV live migration support
> or Migration helper (MH) solutions will still use SEV PSP migration for
> migrating the MH itself, therefore the SEV live migration patches
> (currently v10 posted upstream) still make sense and will be used.

I think that since the migration helper (at least for SEV, not -ES) is 
part of the attested firmware, it can be started on the destination 
before the rest of the VM.

Paolo