kvm-irqchip: do explicit commit when update irq

In the past, we are doing gsi route commit for each irqchip route
update. This is not efficient if we are updating lots of routes in the
same time. This patch removes the committing phase in
kvm_irqchip_update_msi_route(). Instead, we do explicit commit after all
routes updated.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 023da84004..40a2ebca20 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -322,6 +322,7 @@ static int ivshmem_vector_unmask(PCIDevice *dev, unsigned vector,
     if (ret < 0) {
         return ret;
     }
+    kvm_irqchip_commit_routes(kvm_state);
 
     return kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, v->virq);
 }