1.. _s390x-System-emulator: 2 3s390x System emulator 4--------------------- 5 6QEMU can emulate z/Architecture (in particular, 64 bit) s390x systems 7via the ``qemu-system-s390x`` binary. Only one machine type, 8``s390-ccw-virtio``, is supported (with versioning for compatibility 9handling). 10 11When using KVM as accelerator, QEMU can emulate CPUs up to the generation 12of the host. When using the default cpu model with TCG as accelerator, 13QEMU will emulate a subset of z13 cpu features that should be enough to run 14distributions built for the z13. 15 16Device support 17============== 18 19QEMU will not emulate most of the traditional devices found under LPAR or 20z/VM; virtio devices (especially using virtio-ccw) make up the bulk of 21the available devices. Passthrough of host devices via vfio-pci, vfio-ccw, 22or vfio-ap is also available. 23 24.. toctree:: 25 s390x/vfio-ap 26 s390x/css 27 s390x/3270 28 s390x/vfio-ccw 29 30Architectural features 31====================== 32 33.. toctree:: 34 s390x/bootdevices 35 s390x/protvirt 36