[PATCH v3 0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports

Jan Glauber
2017-08-30T14:24:51Z

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(+)

--
2.9.0.rc0.21.g7777322