Conny, et al,

Here is a (significantly larger) set of patches to address
the problem with building passsthrough sense data in an IRB,
using a subchannel-specific callback.

The first three patches are primarily code refactoring.
But, since patch 3 doesn't implement the callback for
vfio-ccw subchannels, it fixes the problem encountered
with "dasdfmt -M quick" failing to run correctly in the
guest because we no longer fill out the other stuff in
the IRB associated with the sense data.

Patch 4 implements that for vfio-ccw.

v2->v3:
 - [EF] Drop Fixes tag
 - [CH] Implement a callback for the IRB sense data
 - [CH] Copy IRB.ESW from passthrough hardware
 - [CH] Only put sense in IRB.ECW if passthrough device did

v1->v2:
 - [MR] Add Fixes: tags
 - [CH] Reinstate the memcpy(sch->sense_data, irb.ecw) in vfio_ccw
 - [CH] Look at IRB.SCSW.E before copying sense into guest IRB

v2: https://lore.kernel.org/qemu-devel/20210611202151.615410-1-farman@linux.ibm.com/
v1: https://lore.kernel.org/qemu-devel/20210610202011.391029-1-farman@linux.ibm.com/

Eric Farman (4):
  s390x/css: Introduce an ESW struct
  s390x/css: Split out the IRB sense data
  s390x/css: Refactor IRB construction
  s390x/css: Add passthrough IRB

 hw/s390x/3270-ccw.c       |  1 +
 hw/s390x/css.c            | 84 ++++++++++++++++++++++++++++-----------
 hw/s390x/s390-ccw.c       |  1 +
 hw/s390x/virtio-ccw.c     |  1 +
 hw/vfio/ccw.c             |  4 ++
 include/hw/s390x/css.h    |  5 +++
 include/hw/s390x/ioinst.h | 12 +++++-
 7 files changed, 83 insertions(+), 25 deletions(-)

-- 
2.25.1