Jiri Pirko
4c3b54af90
virtio_pci_modern: use completion instead of busy loop to wait on admin cmd result ...
Currently, the code waits in a busy loop on every admin virtqueue issued
command to get a reply. That prevents callers from issuing multiple
commands in parallel.
To overcome this limitation, introduce a virtqueue event callback for
admin virtqueue. For every issued command, use completion mechanism
to wait on a reply. In the event callback, trigger the completion
is done for every incoming reply.
Alongside with that, introduce a spin lock to protect the admin
virtqueue operations.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20240716113552.80599-13-jiri@resnulli.us>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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4c3b54af90