[0/7] Retrieve zPCI hardware information from VFIO

Message

Matthew Rosato Sept. 19, 2020, 3:34 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.

Note: This patchset will overlap with "s390x/pci: Accomodate vfio DMA
limiting" because they both add hw/s390x/s390-pci-vfio.* - This is
intentional as both patchsets add functionality that belongs in these new
files.  Once one set is taken, I'll rebase the other on top of it.

Associated kernel patchset:
https://marc.info/?l=kvm&m=160052933112238&w=2

Matthew Rosato (4):
  update-linux-headers: Add vfio_zdev.h
  linux-headers: update against 5.9-rc5
  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

 hw/s390x/meson.build                               |   1 +
 hw/s390x/s390-pci-bus.c                            |  82 ++++++-
 hw/s390x/s390-pci-bus.h                            |  13 ++
 hw/s390x/s390-pci-clp.h                            | 215 +++++++++++++++++++
 hw/s390x/s390-pci-inst.c                           |  28 +--
 hw/s390x/s390-pci-inst.h                           | 196 -----------------
 hw/s390x/s390-pci-vfio.c                           | 235 +++++++++++++++++++++
 hw/s390x/s390-pci-vfio.h                           |  19 ++
 include/standard-headers/drm/drm_fourcc.h          | 140 ++++++++++++
 include/standard-headers/linux/ethtool.h           |  87 ++++++++
 include/standard-headers/linux/input-event-codes.h |   3 +-
 include/standard-headers/linux/vhost_types.h       |  11 +
 include/standard-headers/linux/virtio_9p.h         |   4 +-
 include/standard-headers/linux/virtio_blk.h        |  26 +--
 include/standard-headers/linux/virtio_config.h     |   8 +-
 include/standard-headers/linux/virtio_console.h    |   8 +-
 include/standard-headers/linux/virtio_net.h        |   6 +-
 include/standard-headers/linux/virtio_scsi.h       |  20 +-
 linux-headers/asm-generic/unistd.h                 |   6 +-
 linux-headers/asm-mips/unistd_n32.h                |   1 +
 linux-headers/asm-mips/unistd_n64.h                |   1 +
 linux-headers/asm-mips/unistd_o32.h                |   1 +
 linux-headers/asm-powerpc/kvm.h                    |   5 +
 linux-headers/asm-powerpc/unistd_32.h              |   1 +
 linux-headers/asm-powerpc/unistd_64.h              |   1 +
 linux-headers/asm-s390/kvm.h                       |   7 +-
 linux-headers/asm-s390/unistd_32.h                 |   1 +
 linux-headers/asm-s390/unistd_64.h                 |   1 +
 linux-headers/asm-x86/unistd_32.h                  |   1 +
 linux-headers/asm-x86/unistd_64.h                  |   1 +
 linux-headers/asm-x86/unistd_x32.h                 |   1 +
 linux-headers/linux/kvm.h                          |  10 +-
 linux-headers/linux/vfio.h                         |   7 +-
 linux-headers/linux/vfio_zdev.h                    | 116 ++++++++++
 linux-headers/linux/vhost.h                        |   2 +
 scripts/update-linux-headers.sh                    |   2 +-
 36 files changed, 1007 insertions(+), 260 deletions(-)
 create mode 100644 hw/s390x/s390-pci-clp.h
 create mode 100644 hw/s390x/s390-pci-vfio.c
 create mode 100644 hw/s390x/s390-pci-vfio.h
 create mode 100644 linux-headers/linux/vfio_zdev.h