Re: [Qemu-devel] [RFC v8 00/13] vfio-pci: pass the aer error to guest

[Chen Fan]

Hi,

Because having no body comment it.
and I have made some updates on this patches.
which are:
   1. add check the case when one aer devices is re-hotplugged
       to upper bus which will conflict the present which enable aer.
   2. add vfio_pci_affect_devices_is_multi to specify signal or
       multi in-use when call hot reset.

meantime I have sent the new v8.1 version out.

please ignore this patches.

Thanks,
Chen

On 05/25/2015 06:06 PM, Chen Fan wrote:
> For now, for vfio pci passthough devices when qemu receives
> an error from host aer report, there just terminate the guest,
> but usually user want to know what error occurred but stop the
> guest, so this patches add aer capability support for vfio device,
> and pass the error to guest, and have guest driver to recover
> from the error.
> and turning on SERR# for error forwording in bridge control register
> patch in seabios has been merged.
>
> v7-v8:
>     1. some bug fixes requested by Alex
>
> v6-v7:
>     1. add has_bus_reset to support reset host bus.
>
> v5-v6:
>     1. add secondary bus callbacks to reset host bus.
>
> v3-v4:
>     1. add 'x-aer' for user to off aer capability.
>     2. refactor vfio device to parse extended capabilities.
>
> v2-v3:
>     1. refactor vfio device to parse extended capability.
>     2. add global property for piix4 to disable vfio aer cap.
>
> v1-v2:
>     1. turn on SERR# for bridge control register in firmware.
>     2. initilize aer capability for vfio device.
>     3. fix some trivial bug.
>
> Chen Fan (13):
>    vfio: extract vfio_get_hot_reset_info as a single function
>    vfio: squeeze out vfio_pci_do_hot_reset for support bus reset
>    vfio: add pcie extanded capability support
>    aer: impove pcie_aer_init to support vfio device
>    vfio: add aer support for vfio device
>    vfio: add check host bus reset is support or not
>    vfio: add check for vfio devices which enable aer should support bus
>      reset
>    pci: add bus reset_notifiers callbacks for host bus reset
>    vfio: add sec_bus_reset notifier to notify physical bus reset is
>      needed
>    vfio: do hot bus reset when do virtual secondary bus reset
>    pcie_aer: expose pcie_aer_msg() interface
>    vfio-pci: pass the aer error to guest
>    vfio: add 'aer' property to expose aercap
>
>   hw/pci-bridge/ioh3420.c            |   2 +-
>   hw/pci-bridge/xio3130_downstream.c |   2 +-
>   hw/pci-bridge/xio3130_upstream.c   |   2 +-
>   hw/pci/pci.c                       |  16 ++
>   hw/pci/pci_bridge.c                |   5 +
>   hw/pci/pcie_aer.c                  |   6 +-
>   hw/vfio/pci.c                      | 509 +++++++++++++++++++++++++++++++++----
>   include/hw/pci/pci.h               |   4 +
>   include/hw/pci/pci_bus.h           |   2 +
>   include/hw/pci/pcie_aer.h          |   3 +-
>   10 files changed, 488 insertions(+), 63 deletions(-)