K 10
svn:author
V 3
wma
K 8
svn:date
V 27
2016-03-23T13:29:52.107385Z
K 7
svn:log
V 548
ARM64 copyinout improvements

The first of set of patches.
Use wider load/stores when aligned buffer is being copied.

In a simple test:
  dd if=/dev/zero of=/dev/null bs=1M count=1024
the performance jumped from 410MB/s up to 3.6GB/s.

TODO:
 - better handling of unaligned buffers (WiP)
 - implement similar mechanism to bzero

Submitted by:          Dominik Ermel <der@semihalf.com>
Obtained from:         Semihalf
Sponsored by:          Cavium
Reviewed by:           kib, andrew, emaste
Differential Revision: https://reviews.freebsd.org/D5664

END