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kvm: vmx: check apicv is active before using VT-d posted interrupt
VT-d posted interrupt is relying on the CPU side's posted interrupt. Need to check whether VCPU's APICv is active before enabing VT-d posted interrupt. Fixes: d62caabb41f33d96333f9ef15e09cd26e1c12760 Cc: stable@vger.kernel.org Signed-off-by: Yang Zhang <yang.zhang.wz@gmail.com> Signed-off-by: Shengge Ding <shengge.dsg@alibaba-inc.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -2072,7 +2072,8 @@ static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
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unsigned int dest;
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if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
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!irq_remapping_cap(IRQ_POSTING_CAP))
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!irq_remapping_cap(IRQ_POSTING_CAP) ||
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!kvm_vcpu_apicv_active(vcpu))
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return;
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do {
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@ -2180,7 +2181,8 @@ static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
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struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
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if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
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!irq_remapping_cap(IRQ_POSTING_CAP))
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!irq_remapping_cap(IRQ_POSTING_CAP) ||
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!kvm_vcpu_apicv_active(vcpu))
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return;
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/* Set SN when the vCPU is preempted */
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@ -10714,7 +10716,8 @@ static int vmx_pre_block(struct kvm_vcpu *vcpu)
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struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
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if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
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!irq_remapping_cap(IRQ_POSTING_CAP))
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!irq_remapping_cap(IRQ_POSTING_CAP) ||
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!kvm_vcpu_apicv_active(vcpu))
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return 0;
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vcpu->pre_pcpu = vcpu->cpu;
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@ -10780,7 +10783,8 @@ static void vmx_post_block(struct kvm_vcpu *vcpu)
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unsigned long flags;
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if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
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!irq_remapping_cap(IRQ_POSTING_CAP))
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!irq_remapping_cap(IRQ_POSTING_CAP) ||
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!kvm_vcpu_apicv_active(vcpu))
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return;
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do {
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@ -10833,7 +10837,8 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
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int idx, ret = -EINVAL;
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if (!kvm_arch_has_assigned_device(kvm) ||
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!irq_remapping_cap(IRQ_POSTING_CAP))
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!irq_remapping_cap(IRQ_POSTING_CAP) ||
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!kvm_vcpu_apicv_active(kvm->vcpus[0]))
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return 0;
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idx = srcu_read_lock(&kvm->irq_srcu);
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