From 81eeb95ddbabbb998a6b39f762bc7edaa2a979b4 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Wed, 25 Nov 2015 10:02:16 -0800 Subject: KVM: arm/arm64: vgic-new: Implement virtual IRQ injection Provide a vgic_queue_irq_unlock() function which decides whether a given IRQ needs to be queued to a VCPU's ap_list. This should be called whenever an IRQ becomes pending or enabled, either as a result of userspace injection, from in-kernel emulated devices like the architected timer or from MMIO accesses to the distributor emulation. Also provides the necessary functions to allow userland to inject an IRQ to a guest. Since this is the first code that starts using our locking mechanism, we add some (hopefully) clear documentation of our locking strategy and requirements along with this patch. Signed-off-by: Christoffer Dall Signed-off-by: Andre Przywara --- virt/kvm/arm/vgic/vgic.h | 1 + 1 file changed, 1 insertion(+) (limited to 'virt/kvm/arm/vgic/vgic.h') diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index 61b8d226081b..c6257679e091 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -18,5 +18,6 @@ struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, u32 intid); +bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq); #endif -- cgit v1.2.3