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

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
......@@ -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);
}
/*
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment