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| author | Amit Shah <amit.shah@redhat.com> | 2011-02-17 12:31:10 +0530 |
|---|---|---|
| committer | Amit Shah <amit.shah@redhat.com> | 2011-03-21 16:55:12 +0530 |
| commit | 32059220d02cf8e779bbaf9966d12501c32e2076 (patch) | |
| tree | 9ee8f0c6115de9dc827095ca5abcf4325b1f764f | |
| parent | 0b8b716d6c43b5a1d4e0293df1c77af4fff21bab (diff) | |
| download | hqemu-32059220d02cf8e779bbaf9966d12501c32e2076.zip hqemu-32059220d02cf8e779bbaf9966d12501c32e2076.tar.gz | |
virtio-serial: Enable ioeventfd
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>
| -rw-r--r-- | hw/virtio-pci.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index 952b5d2..ef65590 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -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), |
