Commit 0fc9a58e authored Oct 27, 2017 by Marc Zyngier Committed by Christoffer Dall Nov 10, 2017

KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS

When the guest issues an affinity change, we need to tell the physical
ITS that we're now targetting a new vcpu. This is done by extracting
the current mapping, updating the target, and reapplying the mapping.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

parent 07b46ed1

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

+15 −1

Original line number	Diff line number	Diff line
		@@ -338,11 +338,25 @@ static int vgic_copy_lpi_list(struct kvm_vcpu vcpu, u32 *intid_ptr)

		static int update_affinity(struct vgic_irq irq, struct kvm_vcpu vcpu)
		{
		int ret = 0;

		spin_lock(&irq->irq_lock);
		irq->target_vcpu = vcpu;
		spin_unlock(&irq->irq_lock);

		return 0;
		if (irq->hw) {
		struct its_vlpi_map map;

		ret = its_get_vlpi(irq->host_irq, &map);
		if (ret)
		return ret;

		map.vpe = &vcpu->arch.vgic_cpu.vgic_v3.its_vpe;

		ret = its_map_vlpi(irq->host_irq, &map);
		}

		return ret;
		}

		/*