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    Subject[RFC PATCH v3 28/59] KVM: x86: Check for pending APICv interrupt in kvm_vcpu_has_events()
    Date
    From: Sean Christopherson <sean.j.christopherson@intel.com>

    Return true for kvm_vcpu_has_events() if the vCPU has a pending APICv
    interrupt to support TDX's usage of APICv. Unlike VMX, TDX doesn't have
    access to vmcs.GUEST_INTR_STATUS and so can't emulate posted interrupts,
    i.e. needs to generate a posted interrupt and more importantly can't
    manually move requested interrupts into the vIRR (which it also doesn't
    have access to).

    Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
    Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
    ---
    arch/x86/kvm/x86.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
    index 8161475082a7..c6e56f105673 100644
    --- a/arch/x86/kvm/x86.c
    +++ b/arch/x86/kvm/x86.c
    @@ -11914,7 +11914,9 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)

    if (kvm_arch_interrupt_allowed(vcpu) &&
    (kvm_cpu_has_interrupt(vcpu) ||
    - kvm_guest_apic_has_interrupt(vcpu)))
    + kvm_guest_apic_has_interrupt(vcpu) ||
    + (vcpu->arch.apicv_active &&
    + kvm_x86_ops.dy_apicv_has_pending_interrupt(vcpu))))
    return true;

    if (kvm_hv_has_stimer_pending(vcpu))
    --
    2.25.1
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