[PATCH 00/12] s390x/pci: zPCI interpretation support

[Matthew Rosato]

Note:  The first 3 patches of this series are included as pre-reqs, but
should be pulled via a separate series.  Also, patch 5 is needed to
support 5.16+ linux header-sync and was already done by Paolo but not
merged yet so is thus included here as well. 

For QEMU, the majority of the work in enabling instruction interpretation
is handled via new VFIO ioctls to SET the appropriate interpretation and
interrupt forwarding modes, and to GET the function handle to use for
interpretive execution.  

This series implements these new ioctls, as well as adding a new, optional
'intercept' parameter to zpci to request interpretation support not be used
as well as an 'intassist' parameter to determine whether or not the
firmware assist will be used for interrupt delivery or whether the host
will be responsible for delivering all interrupts.

The ZPCI_INTERP CPU feature is added beginning with the z14 model to
enable this support.

As a consequence of implementing zPCI interpretation, ISM devices now
become eligible for passthrough (but only when zPCI interpretation is
available).

>From the perspective of guest configuration, you passthrough zPCI devices
in the same manner as before, with intepretation support being used by
default if available in kernel+qemu.

Associated kernel series:
https://lkml.org/lkml/2021/12/7/1179

Matthew Rosato (11):
  s390x/pci: use a reserved ID for the default PCI group
  s390x/pci: don't use hard-coded dma range in reg_ioat
  s390x/pci: add supported DT information to clp response
  Update linux headers
  target/s390x: add zpci-interp to cpu models
  s390x/pci: enable for load/store intepretation
  s390x/pci: don't fence interpreted devices without MSI-X
  s390x/pci: enable adapter event notification for interpreted devices
  s390x/pci: use I/O Address Translation assist when interpreting
  s390x/pci: use dtsm provided from vfio capabilities for interpreted
    devices
  s390x/pci: let intercept devices have separate PCI groups

Paolo Bonzini (1):
  virtio-gpu: do not byteswap padding

 hw/s390x/s390-pci-bus.c                       | 121 +++++++++-
 hw/s390x/s390-pci-inst.c                      | 178 +++++++++++++-
 hw/s390x/s390-pci-vfio.c                      | 221 +++++++++++++++++-
 include/hw/s390x/s390-pci-bus.h               |  11 +-
 include/hw/s390x/s390-pci-clp.h               |   3 +-
 include/hw/s390x/s390-pci-inst.h              |   2 +-
 include/hw/s390x/s390-pci-vfio.h              |  45 ++++
 include/hw/virtio/virtio-gpu-bswap.h          |   1 -
 include/standard-headers/asm-x86/kvm_para.h   |   1 +
 include/standard-headers/drm/drm_fourcc.h     | 121 +++++++++-
 include/standard-headers/linux/ethtool.h      |  31 +++
 include/standard-headers/linux/fuse.h         |  15 +-
 include/standard-headers/linux/pci_regs.h     |   6 +
 include/standard-headers/linux/virtio_gpu.h   |  18 +-
 include/standard-headers/linux/virtio_ids.h   |  24 ++
 include/standard-headers/linux/virtio_mem.h   |   9 +-
 include/standard-headers/linux/virtio_vsock.h |   3 +-
 linux-headers/asm-arm64/unistd.h              |   1 +
 linux-headers/asm-generic/unistd.h            |  22 +-
 linux-headers/asm-mips/unistd_n32.h           |   2 +
 linux-headers/asm-mips/unistd_n64.h           |   2 +
 linux-headers/asm-mips/unistd_o32.h           |   2 +
 linux-headers/asm-powerpc/unistd_32.h         |   2 +
 linux-headers/asm-powerpc/unistd_64.h         |   2 +
 linux-headers/asm-s390/kvm.h                  |   1 +
 linux-headers/asm-s390/unistd_32.h            |   2 +
 linux-headers/asm-s390/unistd_64.h            |   2 +
 linux-headers/asm-x86/kvm.h                   |   5 +
 linux-headers/asm-x86/unistd_32.h             |   3 +
 linux-headers/asm-x86/unistd_64.h             |   3 +
 linux-headers/asm-x86/unistd_x32.h            |   3 +
 linux-headers/linux/kvm.h                     |  41 +++-
 linux-headers/linux/vfio.h                    |  22 ++
 linux-headers/linux/vfio_zdev.h               |  51 ++++
 target/s390x/cpu_features_def.h.inc           |   1 +
 target/s390x/gen-features.c                   |   2 +
 target/s390x/kvm/kvm.c                        |   1 +
 37 files changed, 928 insertions(+), 52 deletions(-)

-- 
2.27.0