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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next RFC WIP] Patch for XDP support for virtio_net
Date: Thu, 27 Oct 2016 17:42:18 -0400 (EDT)
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From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Fri, 28 Oct 2016 00:30:35 +0300

> Something I'd like to understand is how does XDP address the
> problem that 100Byte packets are consuming 4K of memory now.

Via page pools.  We're going to make a generic one, but right now
each and every driver implements a quick list of pages to allocate
from (and thus avoid the DMA man/unmap overhead, etc.)