diff options
| -rw-r--r-- | hw/virtio/virtio-pci.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index c0d9c47..433060a 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1349,6 +1349,11 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr, static uint64_t virtio_pci_notify_read(void *opaque, hwaddr addr, unsigned size) { + VirtIOPCIProxy *proxy = opaque; + if (virtio_bus_get_device(&proxy->bus) == NULL) { + return UINT64_MAX; + } + return 0; } @@ -1386,7 +1391,7 @@ static uint64_t virtio_pci_isr_read(void *opaque, hwaddr addr, uint64_t val; if (vdev == NULL) { - return 0; + return UINT64_MAX; } val = qatomic_xchg(&vdev->isr, 0); @@ -1407,7 +1412,7 @@ static uint64_t virtio_pci_device_read(void *opaque, hwaddr addr, uint64_t val; if (vdev == NULL) { - return 0; + return UINT64_MAX; } switch (size) { |