Messages in this thread Patch in this message | | | From | isaku.yamahata@intel ... | Subject | [RFC PATCH v3 28/59] KVM: x86: Check for pending APICv interrupt in kvm_vcpu_has_events() | Date | Wed, 24 Nov 2021 16:20:11 -0800 |
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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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