[Qemu-devel] [PATCH v4 0/3] sPAPR: Support EEH Error Injection

[Gavin Shan <gwshan@linux.vnet.ibm.com>]

The patchset depends on below Linux upstream commits:

  commit ed3e81f ("powerpc/eeh: Move PE state constants around")
  commit ec33d36 ("powerpc/eeh: Introduce eeh_pe_inject_err()")

According to PAPR specification 2.7, there're 3 RTAS calls relevent to error
injection: "ibm,open-errinjct", "ibm,close-errinjct", "ibm,errinjct". The
userland utility "errinjct" running on guest utilizes those 3 RTAS calls like
this way: Call "ibm,open-errinjct" that returns open-token, which is passed to
"ibm,errinjct" together with error specific arguments to do error injection.
Finally, to return the open-token by calling "ibm,close-errinject".

"ibm,errinjct" can be used to inject various errors, not limited to EEH errors.
However, this patchset is going to support injecting EEH errors only for VFIO
PCI devices.

=========
Changelog
=========
v3 -> v4:
   * To record currently opened token, not next one as suggested by Alexey.
v2 -> v3:
   * Replace random token number with incremental counter. Another boolean
     variable to track if it's opened. Both of them are added to migration
     stream.
   * The return value from sPAPRPHBClass::eeh_inject_error() can be passed
     to user directly. No need to do conversion.
   * Corrected error code to RTAS_OUT_CLOSE_ERROR in rtas_ibm_errinjct().
   * Don't expose error injection tokens for unsupported types.
v1 -> v2:
   * Rebased to git://github.com/dgibson/qemu.git (branch: spapr-next)
   * Remove specific PCI error types in hw/ppc/spapr.h. Use those macros
     asm-powerpc/eeh.h instead.

Gavin Shan (3):
  linux-headers: Add eeh.h
  sPAPR: Support RTAS call ibm, {open, close}-errinjct
  sPAPR: Support RTAS call ibm,errinjct

 hw/ppc/spapr.c                  |   5 ++
 hw/ppc/spapr_pci.c              |  36 ++++++++++
 hw/ppc/spapr_pci_vfio.c         |  56 ++++++++++++++++
 hw/ppc/spapr_rtas.c             | 143 ++++++++++++++++++++++++++++++++++++++++
 include/hw/pci-host/spapr.h     |   2 +
 include/hw/ppc/spapr.h          |  17 ++++-
 linux-headers/asm-powerpc/eeh.h |  56 ++++++++++++++++
 7 files changed, 314 insertions(+), 1 deletion(-)
 create mode 100644 linux-headers/asm-powerpc/eeh.h

-- 
2.1.0