diff options
| -rw-r--r-- | hw/pc.h | 5 | ||||
| -rw-r--r-- | hw/virtio-pci.c | 5 |
2 files changed, 9 insertions, 1 deletions
diff --git a/hw/pc.h b/hw/pc.h index da1b102ef1..f2c1b1c2a4 100644 --- a/hw/pc.h +++ b/hw/pc.h @@ -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), |