diff options
| -rw-r--r-- | arch/arm64/kvm/arm.c | 23 |
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 = |