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Commit 08c9fd04 authored by Marc Zyngier's avatar Marc Zyngier Committed by Christoffer Dall
Browse files

KVM: arm/arm64: vITS: Add a helper to update the affinity of an LPI 



In order to help integrating the vITS code with GICv4, let's add
a new helper that deals with updating the affinity of an LPI,
which will later be augmented with super duper extra GICv4
goodness.

Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent bebfd2a2

virt/kvm/arm/vgic/vgic-its.c

+11 −9
Original line number Diff line number Diff line
@@ -336,6 +336,15 @@ static int vgic_copy_lpi_list(struct kvm_vcpu *vcpu, u32 **intid_ptr) 
	return i;

}



static int update_affinity(struct vgic_irq *irq, struct kvm_vcpu *vcpu)

{

	spin_lock(&irq->irq_lock);

	irq->target_vcpu = vcpu;

	spin_unlock(&irq->irq_lock);



	return 0;

}



/*

 * Promotes the ITS view of affinity of an ITTE (which redistributor this LPI

 * is targeting) to the VGIC's view, which deals with target VCPUs.
@@ -350,10 +359,7 @@ static void update_affinity_ite(struct kvm *kvm, struct its_ite *ite) 
		return;



	vcpu = kvm_get_vcpu(kvm, ite->collection->target_addr);



	spin_lock(&ite->irq->irq_lock);

	ite->irq->target_vcpu = vcpu;

	spin_unlock(&ite->irq->irq_lock);

	update_affinity(ite->irq, vcpu);

}



/*
@@ -696,11 +702,7 @@ static int vgic_its_cmd_handle_movi(struct kvm *kvm, struct vgic_its *its, 
	ite->collection = collection;

	vcpu = kvm_get_vcpu(kvm, collection->target_addr);



	spin_lock(&ite->irq->irq_lock);

	ite->irq->target_vcpu = vcpu;

	spin_unlock(&ite->irq->irq_lock);



	return 0;

	return update_affinity(ite->irq, vcpu);

}



/*