[Qemu-devel] [RFC PATCH v3 0/3] s390: channel I/O support in qemu.

[Cornelia Huck]

Hi,

here's the latest version of my patchset introducing virtio-ccw.

This has been reworked with the changed kernel interface: qemu
will now handle all channel I/O requests (except the I/O interrupt
related ones that are handled in-kernel in the kvm case). This
avoids duplicating code in qemu and in kvm.

There are some misc fixes as well (mainly related to virtio-ccw).
Use of mutexes has hopefully been exorcised for now.

Unfortuately, patch 2 is now rather large - but I couldn't think
of a good way to split it up.

I still know of various things that need looking into (memory
accesses, for one), but I'd like some feedback about the new
interface first.

Cornelia Huck (3):
  Update linux headers.
  s390: Virtual channel subsystem support.
  s390: Add new channel I/O based virtio transport.

 hw/s390-virtio.c                     |  282 ++++++--
 hw/s390x/Makefile.objs               |    2 +
 hw/s390x/css.c                       | 1209 ++++++++++++++++++++++++++++++++++
 hw/s390x/css.h                       |   90 +++
 hw/s390x/virtio-ccw.c                |  904 +++++++++++++++++++++++++
 hw/s390x/virtio-ccw.h                |   81 +++
 linux-headers/asm-generic/kvm_para.h |    5 +
 linux-headers/asm-powerpc/kvm.h      |   59 ++
 linux-headers/asm-powerpc/kvm_para.h |    7 +-
 linux-headers/asm-x86/kvm.h          |   17 +
 linux-headers/linux/kvm.h            |   61 +-
 target-s390x/Makefile.objs           |    2 +-
 target-s390x/cpu.h                   |  232 +++++++
 target-s390x/helper.c                |  146 ++++
 target-s390x/ioinst.c                |  737 +++++++++++++++++++++
 target-s390x/ioinst.h                |  213 ++++++
 target-s390x/kvm.c                   |  251 ++++++-
 target-s390x/misc_helper.c           |    6 +-
 18 files changed, 4204 insertions(+), 100 deletions(-)
 create mode 100644 hw/s390x/css.c
 create mode 100644 hw/s390x/css.h
 create mode 100644 hw/s390x/virtio-ccw.c
 create mode 100644 hw/s390x/virtio-ccw.h
 create mode 100644 linux-headers/asm-generic/kvm_para.h
 create mode 100644 target-s390x/ioinst.c
 create mode 100644 target-s390x/ioinst.h

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1.7.12.4