Re: [Qemu-ppc] [PATCH v8 0/7] sPAPR: Support EEH Error Injection

[David Gibson]

On Mon, Sep 14, 2015 at 11:36:08AM +1000, Gavin Shan wrote:
> 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.

I'm happy to merge 6..7/7 once 1..5/7 are in - I'm not sure what tree
they should be going through.

> =========
> Changelog
> =========
> v8:
>    * Rebased to git://github.com/dgibson/qemu.git (branch: spapr-next)
>    * Apply "git -C $to commit" to update-linux-headers.sh.
>    * Use "git rev-parse --short HEAD" to retrieve top commit
>    * Use "EOF" to construct the commit message
>    * Drop sPAPRPHBClass::eeh_inject_error().
> 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 (7):
>   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 4.3.0-rc1
>   Obsolete PCI_MSIX_FLAGS_BIRMASK
>   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                           |  30 +++
>  hw/ppc/spapr_pci_vfio.c                      |  32 +++
>  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                  |   3 +
>  include/hw/ppc/spapr.h                       |  16 +-
>  include/standard-headers/linux/pci_regs.h    | 381 
> ++++++++++++++++++++-------
>  include/standard-headers/linux/virtio_ring.h |   3 +-
>  linux-headers/asm-arm64/kvm.h                |  37 ++-
>  linux-headers/asm-powerpc/eeh.h              |  56 ++++
>  linux-headers/asm-x86/hyperv.h               |   4 +
>  linux-headers/asm-x86/kvm.h                  |   4 +-
>  linux-headers/linux/kvm.h                    |   7 +
>  scripts/update-linux-headers.sh              |  34 ++-
>  tests/libqos/pci.c                           |   8 +-
>  21 files changed, 667 insertions(+), 122 deletions(-)
>  create mode 100644 linux-headers/asm-powerpc/eeh.h
> 

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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