Setup empty irq routing when kvm_create_vm(), so that x86 and s390 no longer need to set empty/dummy irq routing when creating an IRQCHIP 'cause it avoid an synchronize_srcu. Signed-off-by: Yi Wang <foxywang@xxxxxxxxxxx> --- virt/kvm/kvm_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 7db96875ac46..db1b13fc0502 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1242,6 +1242,10 @@ static struct kvm *kvm_create_vm(unsigned long type, const char *fdname) if (r) goto out_err; + r = kvm_setup_empty_irq_routing_lockless(kvm); + if (r) + goto out_err; + mutex_lock(&kvm_lock); list_add(&kvm->vm_list, &vm_list); mutex_unlock(&kvm_lock); -- 2.39.3
