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Date:   Wed, 30 Aug 2017 16:24:51 +0200
From:   Jan Glauber <>
To:     Bjorn Helgaas <>
        Alex Williamson <>,,,
        Jon Masters <>,
        Robert Richter <>,,,
        Jan Glauber <>
Subject: [PATCH v3 0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports

Using vfio-pci on a combination of cn8xxx and some PCI devices results in
a kernel panic. This is triggered by issuing a bus or a slot reset
on the PCI device.

The solution is to prevent the reset. I've dropped the vfio patch from the
previous series as vfio-pci already checks in the reset path for
pci_bus_resetable() and pci_slot_resetable().

With this series both checks indicate that the reset is not possible
preventing the kernel panic.

David Daney (2):
  PCI: Allow PCI_DEV_FLAGS_NO_BUS_RESET to be used on bus device
  PCI: Avoid bus reset for Cavium cn8xxx root ports

Jan Glauber (1):
  PCI: Avoid slot reset for Cavium cn8xxx root ports

 drivers/pci/pci.c    |  4 ++++
 drivers/pci/quirks.c | 24 ++++++++++++++++++++++++
 2 files changed, 28 insertions(+)


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