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KVM: x86: nSVM: don't copy pause related settings

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According to the SDM, the CPU never modifies these settings.
It loads them on VM entry and updates an internal copy instead.

Also don't load them from the vmcb12 as we don't expose these
features to the nested guest yet.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210914154825.104886-5-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2021-09-14 18:48:15 +03:00 committed by Paolo Bonzini
parent 515a0c79e7
commit 0226a45c46
1 changed files with 0 additions and 8 deletions
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8
arch/x86/kvm/svm/nested.c
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@ -550,9 +550,6 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm)
svm->vmcb->control.event_inj = svm->nested.ctl.event_inj;
svm->vmcb->control.event_inj_err = svm->nested.ctl.event_inj_err;
svm->vmcb->control.pause_filter_count = svm->nested.ctl.pause_filter_count;
svm->vmcb->control.pause_filter_thresh = svm->nested.ctl.pause_filter_thresh;
nested_svm_transition_tlb_flush(vcpu);
/* Enter Guest-Mode */
@ -810,11 +807,6 @@ int nested_svm_vmexit(struct vcpu_svm *svm)
vmcb12->control.event_inj = svm->nested.ctl.event_inj;
vmcb12->control.event_inj_err = svm->nested.ctl.event_inj_err;
vmcb12->control.pause_filter_count =
svm->vmcb->control.pause_filter_count;
vmcb12->control.pause_filter_thresh =
svm->vmcb->control.pause_filter_thresh;
nested_svm_copy_common_state(svm->nested.vmcb02.ptr, svm->vmcb01.ptr);
svm_switch_vmcb(svm, &svm->vmcb01);