[v2,0/9] Retrieve zPCI hardware information from VFIO

Message

Matthew Rosato Oct. 2, 2020, 8:06 p.m. UTC

This patchset exploits the VFIO ZPCI CLP region, which provides hardware
information about passed-through s390 PCI devices that can be shared with
the guest.

The retrieval of this information is done once per function (and for a
subset of data, once per function group) and is performed at time of device
plug.  Some elements provided in the CLP region must still be forced to
default values for now to reflect what QEMU actually provides support for.

The original work for this feature was done by Pierre Morel.

Associated kernel patchset:
https://lkml.org/lkml/2020/10/2/981

Changes from v1:
- Added 2 patches to the front of this set that move the s390-pci-bus.h and
  s390-pci-inst.h files to include + associated MAINTAINERS hit.  These
  can be applied separately, but are included here for the sake of
  simplicity.
- Patch 4: header update placeholder refreshed to rc7
- Patch 5: Move new s390-pci-clp.h to include folder
- Patch 6+: s/grp/group/ and fallout from this
- Patch 9: Move new s390-pci-vfio.h to include folder


Matthew Rosato (6):
  s390x/pci: Move header files to include/hw/s390x
  MAINTAINERS: Update s390 PCI entry to include headers
  update-linux-headers: Add vfio_zdev.h
  linux-headers: update against 5.9-rc7
  s390x/pci: clean up s390 PCI groups
  s390x/pci: get zPCI function info from host

Pierre Morel (3):
  s390x/pci: create a header dedicated to PCI CLP
  s390x/pci: use a PCI Group structure
  s390x/pci: use a PCI Function structure

 MAINTAINERS                                        |   1 +
 hw/s390x/meson.build                               |   1 +
 hw/s390x/s390-pci-bus.c                            |  86 ++++-
 hw/s390x/s390-pci-bus.h                            | 372 --------------------
 hw/s390x/s390-pci-inst.c                           |  33 +-
 hw/s390x/s390-pci-inst.h                           | 312 -----------------
 hw/s390x/s390-pci-vfio.c                           | 235 +++++++++++++
 hw/s390x/s390-virtio-ccw.c                         |   2 +-
 include/hw/s390x/s390-pci-bus.h                    | 385 +++++++++++++++++++++
 include/hw/s390x/s390-pci-clp.h                    | 215 ++++++++++++
 include/hw/s390x/s390-pci-inst.h                   | 116 +++++++
 include/hw/s390x/s390-pci-vfio.h                   |  19 +
 .../drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h |  14 +-
 linux-headers/linux/kvm.h                          |   6 +-
 linux-headers/linux/vfio.h                         |   5 +
 scripts/update-linux-headers.sh                    |   2 +-
 16 files changed, 1085 insertions(+), 719 deletions(-)
 delete mode 100644 hw/s390x/s390-pci-bus.h
 delete mode 100644 hw/s390x/s390-pci-inst.h
 create mode 100644 hw/s390x/s390-pci-vfio.c
 create mode 100644 include/hw/s390x/s390-pci-bus.h
 create mode 100644 include/hw/s390x/s390-pci-clp.h
 create mode 100644 include/hw/s390x/s390-pci-inst.h
 create mode 100644 include/hw/s390x/s390-pci-vfio.h