[Qemu-ppc] [PATCH RFC v3 0/6] EEH Support for VFIO PCI Device

[Gavin Shan]

The series of patches intend to support EEH for VFIO PCI devices on sPAPR
platform. It requires corresponding host kernel support. Also, it was built
on top of Alexey's VFIO-for-sPAPR git repository. 

QEMU:   git://github.com/aik/qemu.git (branch: vfio)
Kernel: 
http://linuxppc.10917.n7.nabble.com/PATCH-RFC-v3-0-8-EEH-Support-for-VFIO-PCI-device-td82345.html

Here are some highlights and I don't have experience with QEMU. Any comments
should be appreciated.

* EEH RTAS calls captured by sPAPR platform firstly, and then routed to
  VFIO for handling if VFIO can. Otheriwse, it will be routed to host
  kernel for handling via dedicated VFIO container IOCTL command.
* PHB BUID is the identifier to one specific PHB, which is required information
  for EEH address mapping. In order to retrieve that from VFIO, the PCI
  bus struct has been extended to have additional field "sysdata" for that.
* The guest can't do error injection until holding valid token. Each guest
  is allowed to have one token at once. The RTAS calls managing token is
  simply emulated in QEMU. However, the error injection has to be routed
  to host kernel by dedicated syscall.

Gavin Shan (6):
  headers: Sync with Linux header
  PCI: Add sysdata to PCI bus
  VFIO: EEH address mapping
  VFIO: Introduce EEH handler
  sPAPR: Support EEH RTAS services
  sPAPR: Support error injection

 hw/misc/vfio.c             | 137 ++++++++++++++++++++
 hw/ppc/spapr_pci.c         | 315 +++++++++++++++++++++++++++++++++++++++++++++
 hw/ppc/spapr_rtas.c        |  37 +++++-
 include/hw/misc/vfio.h     |   1 +
 include/hw/pci/pci_bus.h   |   3 +
 include/hw/ppc/spapr.h     |  11 ++
 linux-headers/linux/vfio.h |  57 ++++++++
 7 files changed, 560 insertions(+), 1 deletion(-)

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1.8.3.2