diff options
Diffstat (limited to 'hw/virtio-pci.h')
| -rw-r--r-- | hw/virtio-pci.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h index 14c10f7d67..f8404de92b 100644 --- a/hw/virtio-pci.h +++ b/hw/virtio-pci.h @@ -18,6 +18,11 @@ #include "virtio-net.h" #include "virtio-serial.h" +/* Performance improves when virtqueue kick processing is decoupled from the + * vcpu thread using ioeventfd for some devices. */ +#define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1 +#define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT) + typedef struct { PCIDevice pci_dev; VirtIODevice *vdev; |