Merge tag 'kvm-s390-master-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git...

KVM: s390: Fixes and improvements for 4.16

- optimization for the exitless interrupt support that was merged
  in 4.16-rc1
- improve the branch prediction blocking for nested KVM
- replace some jump tables with switch statements to improve
  expoline performance