From 75858a84a6207f5e60196f6bbd18fde4250e5759 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sun, 4 Jan 2009 17:10:50 +0200 Subject: KVM: Interrupt mask notifiers for ioapic Allow clients to request notifications when the guest masks or unmasks a particular irq line. This complements irq ack notifications, as the guest will not ack an irq line that is masked. Currently implemented for the ioapic only. Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux/kvm_host.h') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 3cf0ede3fd73..99963f36a6db 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -127,6 +127,10 @@ struct kvm { struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; #endif +#ifdef CONFIG_HAVE_KVM_IRQCHIP + struct hlist_head mask_notifier_list; +#endif + #ifdef KVM_ARCH_WANT_MMU_NOTIFIER struct mmu_notifier mmu_notifier; unsigned long mmu_notifier_seq; @@ -320,6 +324,19 @@ struct kvm_assigned_dev_kernel { struct pci_dev *dev; struct kvm *kvm; }; + +struct kvm_irq_mask_notifier { + void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); + int irq; + struct hlist_node link; +}; + +void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, + struct kvm_irq_mask_notifier *kimn); +void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, + struct kvm_irq_mask_notifier *kimn); +void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask); + void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level); void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi); void kvm_register_irq_ack_notifier(struct kvm *kvm, -- cgit v1.2.3-55-g7522