diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
|---|---|---|
| committer | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2011-10-12 19:11:23 +0530 |
| commit | 5745e38afeaa15153c2209674fe37e1cbdd65707 (patch) | |
| tree | f3844615b308ad894b8a6d59c7605b77b8a261f4 /hw/9pfs/virtio-9p-device.c | |
| parent | ebffe2afceb1a17b5d134b5debf553955fe5ea1a (diff) | |
| download | qemu-5745e38afeaa15153c2209674fe37e1cbdd65707.tar.gz | |
hw/9pfs: Use ioeventfd for 9p
With ioeventfd:
[root@qemu-img-64 storage]# dd if=/dev/zero of=/storage/testx bs=8k count=131072 oflag=direct
131072+0 records in
131072+0 records out
1073741824 bytes (1.1 GB) copied, 26.767 s, 40.1 MB/s
Without:
[root@qemu-img-64 storage]# dd if=/dev/zero of=/storage/testx bs=8k count=131072 oflag=direct
131072+0 records in
131072+0 records out
1073741824 bytes (1.1 GB) copied, 65.3361 s, 16.4 MB/s
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'hw/9pfs/virtio-9p-device.c')
| -rw-r--r-- | hw/9pfs/virtio-9p-device.c | 2 |
1 files changed, 2 insertions, 0 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), |