[Qemu-ppc] [PATCH v7 0/8] sPAPR: Support EEH Error Injection

[Gavin Shan]

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
=========
v7:
   * Cover comments from Peter Maydell in scripts/update-linux-headers.sh.
   * Reset spapr->errinjct_token when rebooting guest.
v6:
   * Improved scripts/update-linux-headers.sh to format commit log with
     last commit ID and Linux kernel version. Also, "stdint.h" is allowed
     to be included in virtio headers.
   * #include "asm-powerpc/eeh.h".
   * Incremental spapr->errinjct_token so that the condition (0x1 &
     spapr->errinjct_token) can be used to check if the token is valid.
   * Big-endian tokens in /rtas/ibm,errinjct-tokens.
   * Pick rtas_ldq() to load 64-bits value from RTAS call buffer, which
     was dropped in v2.
   * Use EEH_ERR_FUNC_MAX to validate EEH error function.
   * Removed unnecessary paranthesitis.
v5:
   * Put "errinjct_token" to migration stream disregarding it's opened or
     not. Also, it starts to be supported from v4 vmstate_spapr.
   * Include powerpc/include/uapi/asm/eeh.h in scripts/update_linux_headers.sh
v4:
   * To record currently opened token, not next one as suggested by Alexey.
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.
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 (8):
  scripts: Allow include "stdint.h" in virtio headers
  scripts: Include arch/powerpc/include/uapi/asm/eeh.h
  scripts: Submit changes while updating linux headers
  Synchronize Linux headers from kernel 4.2.0-rc8
  Obsolete PCI_MSIX_FLAGS_BIRMASK
  sPAPR: Introduce rtas_ldq()
  sPAPR: Support RTAS call ibm, {open, close}-errinjct
  sPAPR: Support RTAS call ibm,errinjct

 hw/i386/kvm/pci-assign.c                     |   4 +-
 hw/pci/msix.c                                |   2 +-
 hw/pci/pcie_aer.c                            |   2 +-
 hw/ppc/spapr.c                               |   9 +-
 hw/ppc/spapr_pci.c                           |  56 +++-
 hw/ppc/spapr_pci_vfio.c                      |  35 +++
 hw/ppc/spapr_rtas.c                          | 137 ++++++++++
 hw/s390x/s390-pci-bus.c                      |   8 +-
 hw/vfio/pci.c                                |   8 +-
 hw/xen/xen_pt_msi.c                          |   4 +-
 include/hw/pci-host/spapr.h                  |   2 +
 include/hw/ppc/spapr.h                       |  21 +-
 include/standard-headers/linux/pci_regs.h    | 381 ++++++++++++++++++++-------
 include/standard-headers/linux/virtio_ring.h |   3 +-
 linux-headers/asm-powerpc/eeh.h              |  56 ++++
 linux-headers/asm-x86/hyperv.h               |   2 +
 linux-headers/asm-x86/kvm.h                  |   4 +-
 scripts/update-linux-headers.sh              |  28 +-
 tests/libqos/pci.c                           |   8 +-
 19 files changed, 640 insertions(+), 130 deletions(-)
 create mode 100644 linux-headers/asm-powerpc/eeh.h

-- 
2.1.0