mbox series

[0/5] Retrieving zPCI specific info from QEMU

Message ID 1557499133-24169-1-git-send-email-pmorel@linux.ibm.com (mailing list archive)
Headers show
Series Retrieving zPCI specific info from QEMU | expand

Message

Pierre Morel May 10, 2019, 2:38 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.

The Linux patch enhance the VFIO_IOMMU_GET_INFO ioctl with
a new Z specific capability and we use it to access the
information stored in the zPCI function.

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    | 142 ++++++++++++++++++++++++++++--
 hw/s390x/s390-pci-bus.h    |  13 ++-
 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 |  16 +++-
 6 files changed, 386 insertions(+), 220 deletions(-)
 create mode 100644 hw/s390x/s390-pci-clp.h