linux-kernel - Re: [PATCH 3/7] KVM: SVM: extract preparation of VMCB for nested run

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Message-ID: <891b464a-60a6-3706-da5d-f0ef206d7301@redhat.com>
Date:   Sat, 16 May 2020 01:36:54 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Cathy Avery <cavery@...hat.com>,
        Liran Alon <liran.alon@...cle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: Re: [PATCH 3/7] KVM: SVM: extract preparation of VMCB for nested run

On 15/05/20 19:41, Paolo Bonzini wrote:
> Split out filling svm->vmcb.save and svm->vmcb.control before VMRUN.
> Only the latter will be useful when restoring nested SVM state.

More precisely: when restoring nested SVM state, svm->vmcb.save will
only have to be filled if the nested_run_pending flag is true.

Paolo

> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
>  arch/x86/kvm/svm/nested.c | 42 +++++++++++++++++++++++----------------
>  1 file changed, 25 insertions(+), 17 deletions(-)