Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2017-12-06

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fixing broken uapi for BPF tracing programs for s390 and arm64
   architectures due to pt_regs being in-kernel only, and not part
   of uapi right now. A wrapper is added that exports pt_regs in
   an asm-generic way. For arm64 this maps to existing user_pt_regs
   structure and for s390 a user_pt_regs structure exporting the
   beginning of pt_regs is added and uapi-exported, thus fixing the
   BPF issues seen in perf (and BPF selftests), all from Hendrik.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>