From 08c9fd04211754a34dddbb1471d6265a717ef7fd Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 27 Oct 2017 15:28:36 +0100 Subject: 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: Christoffer Dall Reviewed-by: Eric Auger Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic/vgic-its.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'virt') diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 1de4e68ef1b6..09accdfed189 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -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); } /* -- cgit