diff options
| -rw-r--r-- | hw/9pfs/virtio-9p-device.c | 2 | ||||
| -rw-r--r-- | hw/virtio-pci.c | 5 | ||||
| -rw-r--r-- | hw/virtio-pci.h | 5 |
3 files changed, 7 insertions, 5 deletions
diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c index 513e181c82..e5b68dad5a 100644 --- a/hw/9pfs/virtio-9p-device.c +++ b/hw/9pfs/virtio-9p-device.c @@ -169,6 +169,8 @@ static PCIDeviceInfo virtio_9p_info = { .revision = VIRTIO_PCI_ABI_VERSION, .class_id = 0x2, .qdev.props = (Property[]) { + DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag), diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index df27c198b0..ca5923c495 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -83,11 +83,6 @@ /* Flags track per-device state like workarounds for quirks in older guests. */ #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) -/* 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) - /* QEMU doesn't strictly need write barriers since everything runs in * lock-step. We'll leave the calls to wmb() in though to make it obvious for * KVM or if kqemu gets SMP support. 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; |