diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2022-07-28 14:55:01 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-08-17 07:07:37 -0400 |
| commit | f20400ed0de62ba7682b864e270804ceb3df784a (patch) | |
| tree | 63f7b9a7db5d2cffa47077499dc4e5bd66310879 | |
| parent | 9a4b6a63aee885931622549c85669dcca03bed39 (diff) | |
hw/virtio: gracefully handle unset vhost_dev vdev
I've noticed asserts firing because we query the status of vdev after
a vhost connection is closed down. Rather than faulting on the NULL
indirect just quietly reply false.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220728135503.1060062-3-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/vhost.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 0827d631c0..f758f177bb 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -306,7 +306,7 @@ static inline void vhost_dev_log_resize(struct vhost_dev *dev, uint64_t size) dev->log_size = size; } -static int vhost_dev_has_iommu(struct vhost_dev *dev) +static bool vhost_dev_has_iommu(struct vhost_dev *dev) { VirtIODevice *vdev = dev->vdev; @@ -316,8 +316,12 @@ static int vhost_dev_has_iommu(struct vhost_dev *dev) * does not have IOMMU, there's no need to enable this feature * which may cause unnecessary IOTLB miss/update transactions. */ - return virtio_bus_device_iommu_enabled(vdev) && - virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM); + if (vdev) { + return virtio_bus_device_iommu_enabled(vdev) && + virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM); + } else { + return false; + } } static void *vhost_memory_map(struct vhost_dev *dev, hwaddr addr, |