commit d0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0
author Richard Weinberger <richard@nod.at> Wed Mar 18 21:31:27 2015 +0100
committer Richard Weinberger <richard@nod.at> Mon Apr 13 21:00:53 2015 +0200
tree 7b833b85c0e2eabf6b38d8b94875b430554afae7
parent aaeac66b1a02d399ec8ee63e8d617c1d601ea353

um: Remove SKAS3/4 support

Before we had SKAS0 UML had two modes of operation
TT (tracing thread) and SKAS3/4 (separated kernel address space).
TT was known to be insecure and got removed a long time ago.
SKAS3/4 required a few (3 or 4) patches on the host side which never went
mainline. The last host patch is 10 years old.

With SKAS0 mode (separated kernel address space using 0 host patches),
default since 2005, SKAS3/4 is obsolete and can be removed.

Signed-off-by: Richard Weinberger <richard@nod.at>