diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-20 06:22:59 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-21 03:35:42 -0400 |
| commit | 3a25dfa67fe40f3a2690af2c562e0947a78bd6a0 (patch) | |
| tree | 7dcffe974e927a2ce1f358e0622a5cad9c61da59 /arch | |
| parent | de7cd3f6761f49bef044ec49493d88737a70f1a6 (diff) | |
KVM: nVMX: promptly process interrupts delivered while in guest mode
Since commit c300ab9f08df ("KVM: x86: Replace late check_nested_events() hack with
more precise fix") there is no longer the certainty that check_nested_events()
tries to inject an external interrupt vmexit to L1 on every call to vcpu_enter_guest.
Therefore, even in that case we need to set KVM_REQ_EVENT. This ensures
that inject_pending_event() is called, and from there kvm_check_nested_events().
Fixes: c300ab9f08df ("KVM: x86: Replace late check_nested_events() hack with more precise fix")
Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 7fb2a3a1ca46..7d595effb66f 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6305,18 +6305,13 @@ static int vmx_sync_pir_to_irr(struct kvm_vcpu *vcpu) /* * If we are running L2 and L1 has a new pending interrupt - * which can be injected, we should re-evaluate - * what should be done with this new L1 interrupt. - * If L1 intercepts external-interrupts, we should - * exit from L2 to L1. Otherwise, interrupt should be - * delivered directly to L2. + * which can be injected, this may cause a vmexit or it may + * be injected into L2. Either way, this interrupt will be + * processed via KVM_REQ_EVENT, not RVI, because we do not use + * virtual interrupt delivery to inject L1 interrupts into L2. */ - if (is_guest_mode(vcpu) && max_irr_updated) { - if (nested_exit_on_intr(vcpu)) - kvm_vcpu_exiting_guest_mode(vcpu); - else - kvm_make_request(KVM_REQ_EVENT, vcpu); - } + if (is_guest_mode(vcpu) && max_irr_updated) + kvm_make_request(KVM_REQ_EVENT, vcpu); } else { max_irr = kvm_lapic_find_highest_irr(vcpu); } |