linux-kernel - Re: [PATCH v2 2/2] KVM: x86: add MSR_KVM_MIGRATION

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Message-ID: <cc0c6333-6c2f-e8f3-f838-3cb2492f007a@redhat.com>
Date:   Thu, 29 Apr 2021 12:09:16 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Steve Rutherford <srutherford@...gle.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        KVM list <kvm@...r.kernel.org>, Joerg Roedel <joro@...tes.org>,
        Brijesh Singh <brijesh.singh@....com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Venu Busireddy <venu.busireddy@...cle.com>
Subject: Re: [PATCH v2 2/2] KVM: x86: add MSR_KVM_MIGRATION_CONTROL

On 28/04/21 22:06, Sean Christopherson wrote:
> But there's only multiple meanings if we define the bit to be specific to
> page encryption.  E.g. if the bit is KVM_READY_FOR_MIGRATION, then its meaning
> (when cleared) is simply "please don't migrate me, I will die".  KVM doesn't
> care_why_  the guest is telling userspace that it's not ready for migration, nor
> does KVM care if userspace honors the indicator.

Makes sense, I'll change that.

Paolo