> On Jul 11, 2018, at 6:38 AM, Dave Barach via Lists.Fd.Io 
> <dbarach=cisco....@lists.fd.io> wrote:
> In short, the kernel is simply not involved in packet processing.

... unless you’re running netmap, and even then, you don’t take the described 
ctx switch hit or “copy” hit.

The kernel does run the driver(s) in netmap mode, including running the ISR.

Most of the early DPDK drivers for Intel NICs cane from FreeBSD, not Linux (as 
assumed/stated by OP). 
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