diff options
| author | Amit Shah <amit.shah@redhat.com> | 2010-01-20 00:36:58 +0530 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-01-20 08:25:23 -0600 |
| commit | a1829205a5e4b766b67b843f12cb8235d2387b35 (patch) | |
| tree | c86de90ff1fc320430ff54a8c4884aedb1078cbd | |
| parent | 4d3053a3c68e25b813db65394ca3e6d32dbc50a7 (diff) | |
virtio-serial: Use MSI vectors for port virtqueues
This commit enables the use of MSI interrupts for virtqueue
notifications for ports. We use nr_ports + 1 (for control channel) msi
entries for the ports, as only the in_vq operations need an interrupt on
the guest.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
| -rw-r--r-- | hw/virtio-pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index e7fabfb16b..709d13e4ce 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -499,10 +499,13 @@ static int virtio_serial_init_pci(PCIDevice *pci_dev) if (!vdev) { return -1; } + vdev->nvectors = proxy->nvectors ? proxy->nvectors + : proxy->max_virtserial_ports + 1; virtio_init_pci(proxy, vdev, PCI_VENDOR_ID_REDHAT_QUMRANET, PCI_DEVICE_ID_VIRTIO_CONSOLE, proxy->class_code, 0x00); + proxy->nvectors = vdev->nvectors; return 0; } @@ -581,6 +584,7 @@ static PCIDeviceInfo virtio_info[] = { .init = virtio_serial_init_pci, .exit = virtio_exit_pci, .qdev.props = (Property[]) { + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 0), DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports, |