Commit f58f084e authored by Cornelia Huck's avatar Cornelia Huck
Browse files

Documentation: create/move s390x documentation 



Create a subdirectory for s390x under docs/system/ and move the
existing vfio-ap documentation there.

Create an initial document describing s390x system emulation.

Suggested-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarCornelia Huck <cohuck@redhat.com>
Acked-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20200318103940.1169-1-cohuck@redhat.com>
parent 29e0855c

MAINTAINERS

+3 −2
Original line number Diff line number Diff line
@@ -101,7 +101,8 @@ F: include/hw/watchdog/wdt_diag288.h 
F: pc-bios/s390-ccw/

F: pc-bios/s390-ccw.img

F: target/s390x/

F: docs/vfio-ap.txt

F: docs/system/target-s390x.rst

F: docs/system/s390x/

F: tests/migration/s390x/

K: ^Subject:.*(?i)s390x?

T: git https://github.com/cohuck/qemu.git s390-next
@@ -1611,7 +1612,7 @@ F: hw/s390x/ap-bridge.c 
F: include/hw/s390x/ap-device.h

F: include/hw/s390x/ap-bridge.h

F: hw/vfio/ap.c

F: docs/system/vfio-ap.rst

F: docs/system/s390x/vfio-ap.rst

L: qemu-s390x@nongnu.org



vhost

docs/system/index.rst

+0 −1
Original line number Diff line number Diff line
@@ -30,7 +30,6 @@ Contents: 
   managed-startup

   targets

   security

   vfio-ap

   deprecated

   build-platforms

   license

docs/system/vfio-ap.rst→docs/system/s390x/vfio-ap.rst

+0 −0

File moved.

View file

docs/system/target-s390x.rst

0 → 100644
+26 −0
Original line number Diff line number Diff line 
.. _s390x-System-emulator:



s390x System emulator

---------------------



QEMU can emulate z/Architecture (in particular, 64 bit) s390x systems

via the ``qemu-system-s390x`` binary. Only one machine type,

``s390-ccw-virtio``, is supported (with versioning for compatibility

handling).



When using KVM as accelerator, QEMU can emulate CPUs up to the generation

of the host. When using the default cpu model with TCG as accelerator,

QEMU will emulate a subset of z13 cpu features that should be enough to run

distributions built for the z13.



Device support

==============



QEMU will not emulate most of the traditional devices found under LPAR or

z/VM; virtio devices (especially using virtio-ccw) make up the bulk of

the available devices. Passthrough of host devices via vfio-pci, vfio-ccw,

or vfio-ap is also available.



.. toctree::

   s390x/vfio-ap

docs/system/targets.rst

+1 −0
Original line number Diff line number Diff line
@@ -17,3 +17,4 @@ Contents: 
   target-arm

   target-m68k

   target-xtensa

   target-s390x