diff options
| author | Gal Hammer <ghammer@redhat.com> | 2013-02-27 15:15:31 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-02-27 17:24:40 +0200 |
| commit | 554f1997f0328bc259454239db64b20b3376d9a6 (patch) | |
| tree | bed45ab9191865a2d33902deafc4e32109424c84 /hw | |
| parent | 0e98b436eceb9d31caad898f4983a369c76524e0 (diff) | |
Set virtio-serial device to have a default of 2 MSI vectors.
The virtio-serial device is expected to use 2 MSI vectors, one for
control queue and a second shared for all queues.
Signed-off-by: Gal Hammer <ghammer@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/pc.h | 5 | ||||
| -rw-r--r-- | hw/virtio-pci.c | 5 |
2 files changed, 9 insertions, 1 deletions
@@ -216,6 +216,11 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t); .driver = "virtio-blk-pci",\ .property = "discard_granularity",\ .value = stringify(0),\ + },{\ + .driver = "virtio-serial-pci",\ + .property = "vectors",\ + /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string */\ + .value = stringify(0xFFFFFFFF),\ } #endif diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index a869f535de..ba56ab2d77 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -975,6 +975,9 @@ static int virtio_serial_init_pci(PCIDevice *pci_dev) if (!vdev) { return -1; } + + /* backwards-compatibility with machines that were created with + DEV_NVECTORS_UNSPECIFIED */ vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED ? proxy->serial.max_virtserial_ports + 1 : proxy->nvectors; @@ -1155,7 +1158,7 @@ static const TypeInfo virtio_net_info = { static Property virtio_serial_properties[] = { DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED), + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), |