Merge tag 'kvm-s390-next-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git...

* More selftests
* Improved KVM_S390_MEM_OP ioctl input checking
* Add kvm_valid_regs and kvm_dirty_regs invalid bit checking

diff --cc Documentation/virt/kvm/api.txt
Simple merge

diff --cc arch/s390/kvm/kvm-s390.c
Simple merge