From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Xu <peterx@redhat.com>
Subject: [Question] How pmd virtio works without UIO?
Date: Tue, 22 Dec 2015 11:50:41 +0800
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Hi,

I got a question related to how virtio pmd driver work without
UIO layer.

I see that in virtio PMD driver, DPDK will first try to init the
device using UIO interfaces. If it fails, it will try to init by
manipulating IO ports directly (see virtio_resource_init()).

For the ioport case, is it okay to do it like this? E.g., in
eth_virtio_dev_init(), we are resetting the virtio device, however,
this device should still be owned by virtio-pci driver in the
kernel.

How is that working? Did I miss anything?

Thanks in advance.
Peter