diff options
Diffstat (limited to 'arch/x86/kvm/svm/nested.c')
| -rw-r--r-- | arch/x86/kvm/svm/nested.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 35947464ee2a..c8ed267b76f0 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -512,6 +512,18 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm) recalc_intercepts(svm); } +static void nested_svm_copy_common_state(struct vmcb *from_vmcb, struct vmcb *to_vmcb) +{ + /* + * Some VMCB state is shared between L1 and L2 and thus has to be + * moved at the time of nested vmrun and vmexit. + * + * VMLOAD/VMSAVE state would also belong in this category, but KVM + * always performs VMLOAD and VMSAVE from the VMCB01. + */ + to_vmcb->save.spec_ctrl = from_vmcb->save.spec_ctrl; +} + int enter_svm_guest_mode(struct kvm_vcpu *vcpu, u64 vmcb12_gpa, struct vmcb *vmcb12) { @@ -536,6 +548,7 @@ int enter_svm_guest_mode(struct kvm_vcpu *vcpu, u64 vmcb12_gpa, WARN_ON(svm->vmcb == svm->nested.vmcb02.ptr); + nested_svm_copy_common_state(svm->vmcb01.ptr, svm->nested.vmcb02.ptr); nested_load_control_from_vmcb12(svm, &vmcb12->control); svm_switch_vmcb(svm, &svm->nested.vmcb02); @@ -725,6 +738,8 @@ int nested_svm_vmexit(struct vcpu_svm *svm) 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); /* |