Patch to auto-load MSFT PV NIC driver

Hank Janssen hjanssen at microsoft.com
Mon May 10 17:05:02 UTC 2010


>Sent: Saturday, May 08, 2010 7:27 AM -  Hank Janssen
>>On Sat, May 08, 2010 at 01:52:01PM +0000, Hank Janssen wrote:>
>>
>> I am not sure if this is the right approach. hv_netvsc takes a dependency on hv_vmbus.
>> hv_vmbus does have the same DMI detection logic in it. But unless hv_vmbus has loaded
>> up competely, hv_netvsc will fail on loadup. And I do not think we can guarantee that
>> hv_vmbus has loaded yet.
>
>Yes you can, the dependancies in the module will take care of it.  Try
>it, if you try to load the hv_netvsc module before hv_vmbus, modprobe
>will load hv_vmbus first.

In my testing I have seen issues with timing.   It takes a little while for VMBus to start
getting the initialization taken care of with Hyper-V. And I have seen netvsc error with
unresolved symbols because vmbus had not completed the initialization yet.

Thanks,

Hank.


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