From ffe6370c9f2a596814bf14e472910fe6ef7e001d Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 21 Jun 2009 19:51:18 +0300 Subject: qemu/net: flag to control the number of vectors a nic has Add an option to specify the number of MSI-X vectors for PCI NIC cards. This can also be used to disable MSI-X, for compatibility with old qemu. This option currently only affects virtio cards. Signed-off-by: Michael S. Tsirkin Signed-off-by: Anthony Liguori --- hw/virtio-net.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'hw/virtio-net.c') diff --git a/hw/virtio-net.c b/hw/virtio-net.c index 29a1272feb..7a7eafe903 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -745,7 +745,10 @@ VirtIODevice *virtio_net_init(DeviceState *dev) n->mac_table.macs = qemu_mallocz(MAC_TABLE_ENTRIES * ETH_ALEN); n->vlans = qemu_mallocz(MAX_VLAN >> 3); - n->vdev.nvectors = 3; + if (dev->nd->nvectors == NIC_NVECTORS_UNSPECIFIED) + n->vdev.nvectors = 3; + else + n->vdev.nvectors = dev->nd->nvectors; register_savevm("virtio-net", virtio_net_id++, VIRTIO_NET_VM_VERSION, virtio_net_save, virtio_net_load, n); -- cgit v1.2.3