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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-10-27 16:28:36 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2017-11-10 08:51:58 +0100 |
| commit | 08c9fd04211754a34dddbb1471d6265a717ef7fd (patch) | |
| tree | 0500ad23bb38fe86db95d77a33d49ed7e818b38b /virt/kvm/arm/vgic/vgic-its.c | |
| parent | KVM: arm/arm64: vITS: Add MSI translation helpers (diff) | |
| download | linux-08c9fd04211754a34dddbb1471d6265a717ef7fd.tar.xz linux-08c9fd04211754a34dddbb1471d6265a717ef7fd.zip | |
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 <christoffer.dall@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-its.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-its.c | 20 |
1 files changed, 11 insertions, 9 deletions
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); } /* |