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[v2,0/5] Retrieving zPCI specific info from QEMU

Message ID 1558614300-24574-1-git-send-email-pmorel@linux.ibm.com (mailing list archive)
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Series Retrieving zPCI specific info from QEMU | expand

Message

Pierre Morel May 23, 2019, 12:24 p.m. UTC 
This patch implement the QEMU part to retrieve ZPCI specific
information from the host.
The Linux part has been posted on a separate patch on the LKML.
  
Subject: [PATCH 0/4] Retrieving zPCI specific info with VFIO
Message-Id: <1557476555-20256-1-git-send-email-pmorel@linux.ibm.com>
  
We use the PCI VFIO interface to retrieve ZPCI specific information
from the host with a ZPCI specific device region.
 
The retrieval is done only once per function and function group
during the plugging of the device.
The guest's requests are filled with shadow values we keep for
the duration of the device remains plugged.

Still there are some values we need to virtualize, like
the UID and FID of the zPCI function, and we currently
only allow the refresh bit for the zPCI group flags.

Note that we export the CLP specific definitions in a dedicated
file for clarity.


Pierre Morel (5):
  vfio: vfio_iommu_type1: linux header place holder
  s390: PCI: Creation a header dedicated to PCI CLP
  s390: vfio_pci: Use a PCI Group structure
  s390: vfio_pci: Use a PCI Function structure
  s390: vfio_pci: Get zPCI function info from host

 hw/s390x/s390-pci-bus.c         | 144 +++++++++++++++++++++++++--
 hw/s390x/s390-pci-bus.h         |  15 ++-
 hw/s390x/s390-pci-clp.h         | 211 ++++++++++++++++++++++++++++++++++++++++
 hw/s390x/s390-pci-inst.c        |  28 +++---
 hw/s390x/s390-pci-inst.h        | 196 -------------------------------------
 linux-headers/linux/vfio.h      |  14 ++-
 linux-headers/linux/vfio_zdev.h |  34 +++++++
 7 files changed, 422 insertions(+), 220 deletions(-)
 create mode 100644 hw/s390x/s390-pci-clp.h
 create mode 100644 linux-headers/linux/vfio_zdev.h