[Qemu-devel] [RFC PATCH 0/4] s390: virtio-ccw guest kernel support.

[Cornelia Huck <cornelia.huck@de.ibm.com>]

Hi,

the following patches are for Linux running as a guest under a
host with virtio-ccw support.

Patch 1 makes the kvm_virtio driver exit gracefully if the page
containing s390-virtio information it expects is not present; it
could probably go in seperately from the other patches.

Patch 2 exports a needed interface.

Patch 3 adds a driver handling virtio-ccw devices. The virtual
subchannels have ccw devices with a special CU id this driver
matches for. The virtio_ccw driver handles configuration and
operation via the special new channel commands.

Patch 4 is a split out of common code.

Cornelia Huck (4):
  s390/kvm: Handle hosts not supporting s390-virtio.
  s390: Add a mechanism to get the subchannel id.
  s390/kvm: Add a channel I/O based virtio transport driver.
  s390/kvm: Split out early console code.

 arch/s390/include/asm/ccwdev.h  |   5 +
 arch/s390/include/asm/irq.h     |   1 +
 arch/s390/kernel/irq.c          |   1 +
 drivers/s390/cio/device_ops.c   |  10 +
 drivers/s390/kvm/Makefile       |   2 +-
 drivers/s390/kvm/early_printk.c |  42 +++
 drivers/s390/kvm/kvm_virtio.c   |  46 ++-
 drivers/s390/kvm/virtio_ccw.c   | 760 ++++++++++++++++++++++++++++++++++++++++
 8 files changed, 841 insertions(+), 26 deletions(-)
 create mode 100644 drivers/s390/kvm/early_printk.c
 create mode 100644 drivers/s390/kvm/virtio_ccw.c

-- 
1.7.11.4