On 8/24/22 11:16, Alvaro Karsz wrote:
Hi Jason,
Or reset but can we simply use interrupt instead of the busy waiting?
I agree that timeouts are not needed using interrupts.
Quite the contrary.
There is no guarantee that a completion for a given command will be
signaled at all; if the completion is never posted to the virtio queue
the VM will spin forever.
This can be done, but seems like a big change.
All functions calling virtnet_send_command expect to get a response immediately.
This may be difficult, since some of the commands are sent in the
probe function.
This is a simplistic approach. _Any_ command sent via virtio will have
to have some sort of handling in the host, so an immediate response is
not guaranteed.
Especially virtio-block command will _not_ be handled immediately.
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
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