tree a3501e4b20c6b146900a906bdd4344dfffc534b0
parent c783b91ebdbab67e848889c29dd0611c2b2c9fea
author Christian Borntraeger <borntraeger@de.ibm.com> 1473678818 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1474374361 +0200

s390: claim efficient unaligned access

most unaligned accesses are reasonable efficient (no kernel emulation)
on s390, let's announce it

This also
- removes the ubsan false positives for unaligned accesses on s390 with
  default config
- uses simpler arithmetic in several functions in several other areas
  of the kernel like ethernet frame classification

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>