KVM: SVM: Stuff save->dr6 at during VMSA sync, not at RESET/INIT

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Move code to stuff vmcb->save.dr6 to its architectural init value from
svm_vcpu_reset() into sev_es_sync_vmsa().  Except for protected guests,
a.k.a. SEV-ES guests, vmcb->save.dr6 is set during VM-Enter, i.e. the
extra write is unnecessary.  For SEV-ES, stuffing save->dr6 handles a
theoretical case where the VMSA could be encrypted before the first
KVM_RUN.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210713163324.627647-33-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-07-13 09:33:10 -07:00 • committed by Paolo Bonzini

parent 6cfe7b83ac

commit d0f9f826d8

2 changed files with 1 additions and 1 deletions

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arch/x86/kvm/svm/sev.c

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arch/x86/kvm/svm/svm.c

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