@@ -789,6 +789,7 @@ static int virtio_serial_exit_pci(PCIDevice *pci_dev)
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+ virtio_pci_stop_ioeventfd(proxy);
virtio_serial_exit(proxy->vdev);
return virtio_exit_pci(pci_dev);
}
@@ -898,6 +899,8 @@ static PCIDeviceInfo virtio_info[] = {
.init = virtio_serial_init_pci,
.exit = virtio_serial_exit_pci,
.qdev.props = (Property[]) {
+ DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+ VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
DEV_NVECTORS_UNSPECIFIED),
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
Enable ioeventfd for virtio-serial devices by default. Commit 25db9ebe15125deb32958c6df74996f745edf1f9 lists the benefits of using ioeventfd. Copying a file from guest to host over a virtio-serial channel didn't show much difference in time or io_exit rate. Signed-off-by: Amit Shah <amit.shah@redhat.com> --- hw/virtio-pci.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)