Okay, I wadding into the process of writing a poll-mode driver for DPDK. 

First question, is the use of the UIO device a requirement (outside of the need 
for interrupt support) since it is possible to map the PCI bars via /dev/mem?

Second question, is it expected that the NIC hardware would already have been 
initialized by the kernel driver for that device? Say to load microcode on an 
intelligent NIC?

I am sure to have more when the water level gets above my head ;-)

Thanks,

Patrick 

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