Both vhost-user and kernel vhost can inform Qemu about virt-queue error through separate eventfd. Let's use this possibility.
For now just dump a message on error like elsewhere in vhost.c. Further plan is implement QAPI event for this and may be some other vhost/virtio errors to make it possible to instantly notify user about problems in vm. That would be a separate patch or patchset. v2: don't add QAPI event for now. Let's first realize the vhost interface. Yandex-ST: CLOUD-101375 Konstantin Khlebnikov (2): vhost: add method vhost_set_vring_err vhost: setup error eventfd and dump errors hw/virtio/vhost-backend.c | 7 ++++++ hw/virtio/vhost-user.c | 6 +++++ hw/virtio/vhost.c | 37 +++++++++++++++++++++++++++++++ include/hw/virtio/vhost-backend.h | 3 +++ include/hw/virtio/vhost.h | 1 + 5 files changed, 54 insertions(+) -- 2.25.1
