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-rw-r--r--arch/arm64/kvm/arm.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 1de49b48e35e..505d504b52b5 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2790,6 +2790,7 @@ int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
return kvm_vgic_v4_set_forwarding(irqfd->kvm, prod->irq,
&irqfd->irq_entry);
}
+
void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
struct irq_bypass_producer *prod)
{
@@ -2803,6 +2804,28 @@ void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
kvm_vgic_v4_unset_forwarding(irqfd->kvm, prod->irq);
}
+bool kvm_arch_irqfd_route_changed(struct kvm_kernel_irq_routing_entry *old,
+ struct kvm_kernel_irq_routing_entry *new)
+{
+ if (new->type != KVM_IRQ_ROUTING_MSI)
+ return true;
+
+ return memcmp(&old->msi, &new->msi, sizeof(new->msi));
+}
+
+int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
+ uint32_t guest_irq, bool set)
+{
+ /*
+ * Remapping the vLPI requires taking the its_lock mutex to resolve
+ * the new translation. We're in spinlock land at this point, so no
+ * chance of resolving the translation.
+ *
+ * Unmap the vLPI and fall back to software LPI injection.
+ */
+ return kvm_vgic_v4_unset_forwarding(kvm, host_irq);
+}
+
void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *cons)
{
struct kvm_kernel_irqfd *irqfd =