Messages in this thread Patch in this message | | | From | Maxim Levitsky <> | Subject | [PATCH 5/5] KVM: nSVM: set a dummy exit reason in L1 vmcb when loading the nested state | Date | Mon, 3 May 2021 15:54:46 +0300 |
| |
Since the nested migration is a result of a VMRUN, this makes it possible to keep a warning that L1 vmcb should always have VMRUN exit reason when switching back to it, which otherwise triggers incorrectly.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> --- arch/x86/kvm/svm/nested.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 12a12ae940fa..146be4b5084b 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -1338,6 +1338,12 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu, svm->vmcb01.ptr->save.rip = save->rip; svm->vmcb01.ptr->save.cpl = 0; + /* + * For consistency sake, restore the L1 exit reason + * (that happened prior to the migration) to SVM_EXIT_VMRUN. + */ + svm->vmcb->control.exit_code = SVM_EXIT_VMRUN; + nested_load_control_from_vmcb12(svm, ctl); svm_switch_vmcb(svm, &svm->nested.vmcb02); -- 2.26.2
| |