Subject: Bus mastering to user space
To: None <tech-kern@NetBSD.ORG, misc@openbsd.org>
From: G. Scott Lloyd <gscott@altatech.com>
List: tech-kern
Date: 07/18/1997 14:53:02 
Do the *BSD's support bus mastering DMA devices that transfer to/from user
memory? I've been told that Linux does not and will not.

The goal here is to reduce the copying of data to support 100-200
MBytes/sec devices. What is the fastest throughput anyone has achieved?

--Scott