s390x/tcg: facilitites and instructions

Wire up some io instructions and implement new facilitites. Make sure to take care of MTTCG when it comes to atomic operations.

As we are now able to install/boot a Fedora 26/27 as well as an upstream kernel compiled for z12, let's bump up the QEMU cpu model to a very stripped down version of a z12 (with missing base features). Take care of backwards compatibility (as we defined the QEMU model as migration-safe).

Try it yourself: https://github.com/davidhildenbrand/qemu.git s390x-queue

This branch is based on https://github.com/cohuck/qemu.git s390x-next and contains other patches sent previously, especially
- s390x/tcg: CCW hotplug support
- cpus: make pause_all_cpus() play with SMP on single threaded TCG
- cpu-exec: fix missed CPU kick during interrupt injection

$ baseurl=https://ftp-stud.hs-esslingen.de/pub/fedora-secondary/releases/27/Server/s390x/os/
$ wget ${baseurl}/images/kernel.img
$ wget ${baseurl}/images/initrd.img
$ qemu-img create -f qcow2 guest-tcg.qcow2 8G
$ qemu-system-s390x \
    -nographic -machine s390-ccw-virtio -m 2048 \
    --accel tcg,thread=multi -smp 4,maxcpus=4 \
    -hda guest-tcg.qcow2 \
    -kernel kernel.img \
    -initrd initrd.img \
    --append "TERM=linux inst.repo=${baseurl}/ ip=dhcp inst.geoloc=0"

Please note that we still have problems with floating interrupts. I have already patches and will send them out soon, once the current set of patches have been reviewed and picked up. So if you run into problems, try with -smp 1.

David Hildenbrand (9):
s390x/tcg: ALSI/ALSGI are atomic with interlocked-acccess facility 1 s390x/tcg: implement Interlocked-Access Facility 2 s390x/tcg: wire up SET ADDRESS LIMIT
s390x/tcg: wire up SET CHANNEL MONITOR
s390x/tcg: Implement STORE CHANNEL PATH STATUS
s390x/tcg: Implement SIGA instruction
s390x/tcg: implement extract-CPU-time facility
s390x/tcg: we already implement the Set-Program-Parameter facility
s390x: change the QEMU cpu model to a stripped down z12

 hw/s390x/s390-virtio-ccw.c  |  6 +++
 target/s390x/cpu.h          |  3 ++
 target/s390x/cpu_models.c   | 97 +++++++++++++++++++-------------------------
 target/s390x/cpu_models.h   |  1 +
 target/s390x/gen-features.c | 87 ++++++++++++++++++++++++++++++++++++++++
 target/s390x/helper.h       |  2 +
 target/s390x/insn-data.def  | 22 ++++++----
 target/s390x/misc_helper.c  | 18 +++++++++
 target/s390x/translate.c    | 98 +++++++++++++++++++++++++++++++++++++++++++++
 9 files changed, 270 insertions(+), 64 deletions(-)

2.14.3