forked from luck/tmp_suning_uos_patched
KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'
This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -1172,5 +1172,7 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
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struct irq_bypass_producer *);
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void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
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void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
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int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
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uint32_t guest_irq, bool set);
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#endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
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#endif
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@ -266,6 +266,13 @@ void __attribute__((weak)) kvm_arch_irq_bypass_start(
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struct irq_bypass_consumer *cons)
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{
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}
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int __attribute__((weak)) kvm_arch_update_irqfd_routing(
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struct kvm *kvm, unsigned int host_irq,
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uint32_t guest_irq, bool set)
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{
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return 0;
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}
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#endif
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static int
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@ -586,9 +593,19 @@ void kvm_irq_routing_update(struct kvm *kvm)
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spin_lock_irq(&kvm->irqfds.lock);
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list_for_each_entry(irqfd, &kvm->irqfds.items, list)
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list_for_each_entry(irqfd, &kvm->irqfds.items, list) {
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irqfd_update(kvm, irqfd);
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#ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
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if (irqfd->producer) {
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int ret = kvm_arch_update_irqfd_routing(
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irqfd->kvm, irqfd->producer->irq,
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irqfd->gsi, 1);
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WARN_ON(ret);
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}
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#endif
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}
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spin_unlock_irq(&kvm->irqfds.lock);
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}
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